Levitating objects in a stream of air.. Coanda effect // Homemade Science with Bruce Yeany Bruce Yeany 2021-04-04 | Tired of seeing the ping pong balls, beach balls, golf balls or a screwdriver float in a stream of air? I was, so I looked around andfound some other objects that demonstrated the same principles. In my investigations I found that the objects were supported by two different means. Some objects were supported from below directly by the air air stream itself. Other objects used the Coanda effect to decrease the air pressure above the ball allowing the atmospheric pressure to support the object, in some cases it is probably a combination of both methods. This has been a fun and interesting investigation and I was able to find enough objects that they will be shown in at least two parts. Enjoy the video and if you have any suggestions, add them to the comments, I do read them.My compressor: I had a few people ask about itit's old and loud, so I ran it outdoors away from the house and ran 100 feet of air line portable 8 gallon, 2 horsepower, rated for 125 PSI. with 6.3 cubic feet per minute recovery. It was more than enough for these demonstrations
Centripetal swing tray video bloopers Bruce Yeany 2022-08-13 | While making a video on the classic centripetal swinging tray demonstration, some of the variations shown were being tested for the first time as I was making the video. The result being that not everything went as smoothly as possible. However, overall I was impressed with the changes and look forward to taking them a step further in the future. The original video can be seen here: youtu.be/7iNnajnyZfw
Centripetal swinging tray, improving an old demonstration Bruce Yeany 2022-07-27 | The centripetal swinging bucket ad tray demonstrations has been around for centuries and is a classic physics demonstration that can be done at students of all ages. Changing fro using a bucket of water to using a tray with cups of water was a good improvement in the demonstration and in this video I attempt to some additional upgrades to the demonstration to make it a bit more interesting.Here is another YouTube video on the swinging tray that I posted previouslyyoutu.be/vhNfIydKyRQ
Freefall, elevators and other falling objects demonstrating weightlessness Bruce Yeany 2022-07-20 | Weightlessness due to free-fall can be an engaging investigation for students and easily demonstrated using a variety of simple materials. Acceleration near earth's surface is 9.8 meters per second squared and is uniform to all object irregardless of their mass as long as air resistance isn't a factor. This
Inertia Shuffleboard..... Homemade Science with Bruce Yeany Bruce Yeany 2022-06-21 | Here is a table top shuffleboard game that we've set up when demonstrating Newton's laws of motion, students found it to be a lot of fun. There are several variations that be be made, The game can be set up simpler without the rubber band shooter block, just pushing the blocks by hand but everyone seemed to prefer this method.
Graduation Commencement Speech... What could go wrong? Bruce Yeany 2022-06-09 | The commencement speech I gave for my last group of students as a teacher before I retired. I did have the opportunity to visit back with my old position this year as a returned to fill in my old position due to the previous teacher leaving unexpectedly. The speech was practiced several times, but results did not go quite a smoothly as I had planned. However it is one that I think will not be one that is soon forgotten. My best wishes to the class of 2022
Newtons laws of motion demonstrated with wooden blocks Bruce Yeany 2022-06-06 | I've used a set of wooden blocks as a means of introducing or reviewing basic concepts about Newton's laws of motion. The construction and use are very simple but illustrate very clearly force, mass and acceleration are all related in the the motion of objects
Musical Bottles is Sound Science Bruce Yeany 2022-05-29 | There are a variety of ways for making sounds from ordinary glass and plastic bottles and has been a favorite of students for years, here are a few additional activities to investigate about the sounds made by either striking the bottle to make it ring or blowing across the mouth (Helmhotlz resonator) to make sound by vibrating the air inside the bottle, either way it is an investigation that anyone can make. Additional ideas are included to take bottle sounds to the next level
Atmospheric pressure powered car // Homemade Science with Bruce Yeany Bruce Yeany 2022-05-08 | Here is a small car that is uses the atmospheric pressure as a medium for storing potential energy as a power source. It follows the initial project of using a larger water squirter toy on a car of similar design. In this case, a small syringe is stoppered at the tip and when the plunger is pulled out, the differential between the inside of the syringe and the atmosphere outside of it can be used to supply the turning force on the rear axle. A string wrapped around the rear axle supplies the torque giving car distance close to 100 feet. A second method of using a pulley system to increase the power supply range but reducing the torque is introduced but appears to need some additional modifications ( still a work in progress).
Egg Drop Project Highlights, Bruce Yeany 2022-04-30 | Safely stopping an unpackaged egg as it falls is the challenge. This activity has been around since I started teaching in the 70's and has always been a student favorite. However, after trying the original concept of packaging around the egg for several years , I switched from the egg packaging to the idea of egg catching. We've found this to be much more challenging for designs, and better suited to areas while limits to height for the falling distance are a factor, our building limits us to about 5 meters , Difficulty to the challenge can be adjusting the type and amounts of supplies that may be used. I should have mentioned I have done this with adults in a grad class that I taught at a nearby college. In that case the materials were 25 sheet of copy paper and tape, it was a overwhelmingly the favorite activity that I assigned. I do believe that activities such as this need to be tied to a lessons rather than given as a random assignment. The concepts that I use in in conjunction with this activity include:Newton's law's of motion , Impulse, Galileo and accelerating bodies, freefall, terminal velocity.No one asked but the eggs were donated as they were past their expiration date for sale
Atmosphere powered cart. // Homemade Science with Bruce Yeany Bruce Yeany 2022-03-29 | A large syringe type water toy as a basis for storing potential energy was successfully used to drive a small cart across the floor for about 200 feet. By pulling the plunger out on the toy syringe, a vacuum is formed in the empty chamber and atmospheric pressure trying to equalize the pressure inside the tube drives the plunger back in again with a force of approximately 11.5 pounds or 51 newtons. As the first prototype to test the concept, the cart was made rather large and heavier than needed but still managed to combine drive and coast for the length of our school hallways and gym floor. Minor efforts were tested at changing the mechanical advantage of the drive but still needs to be refined further for improving distance or speed of the cart. The idea for this was based on:Tom Stanton atmosphere powered caryoutube.com/watch?v=KWAvj8ATXmE&t=1100s
Tire spinning paint Bruce Yeany 2022-03-20 | This was a classroom investigation taking a look at how mud may fly off a spinning tire. The tire is spun using a electric drill and the mud is replaced with colored tempura paint. The original file of video were lost during some computer trouble but were recently found. I used this in my classroom once or twice but discarded it for demonstrations with clearer results.
Physics lever toy, instructions for an easy build. //. Homemade Science with Bruce Yeany Bruce Yeany 2022-03-16 | The lever toy has be around for decades if not centuries, they are easy to build, fun to play with, and can be a used in lessons about simple machines. However, the traditional look of the acrobat needed updating, so in this video I am offing some tips on how to build ones of these whether it's an animated figure, historical figure, someone that you know or even yourself.
Lever toy updated physics toy // Homemade Science with Bruce Yeany Bruce Yeany 2022-03-06 | The lever toy has be around for decades if not centuries, they are easy to build, fun to play with, and can be a used in lessons about simple machines. However, the traditional look of the acrobat needed updating, so in this video I am offing a few suggestions on giving the toy a more modern look. I'm hoping to see reviewers take up the challenge and offer their own ideas of who should appear as the next gymnast on the toy.
Newtons cradle with water balloons versus frozen water balloon Bruce Yeany 2022-01-30 | Newton's cradle made with water balloons, or ice balloons, will it work? This device always been a fascinating toy whether it's in the science classroom or sitting on the "executive desk". Over the years I've made several different versions replacing the steels balls with other interesting objects, some of them worked better than others. In this investigation. I've made Newton's cradle using thought it would fun and challenging to try it using 5 water balloons, testing it and then freezing them and comparing the results. I was surprised by the results.
Rollback toy Construction .... Cool STEM project Bruce Yeany 2022-01-20 | Combining a rollback toy with walking shoes or a variety of hopping animals make for an easy to build STEM project for young students. This video is a follow up to two previous ones and covers some of the basic ideas for construction. rollback toy video. youtu.be/lNuhphRqJfQ
Cool rollback toy variations... Great STEM activity Bruce Yeany 2022-01-02 | What can be added to a rollback toy to make it more interesting? How about walking feet , jumping grasshoppers, frogs, kangaroos moonwalking shoes and a rabbit racing against a tortoise. All these examples plus a few more can be added to the side of a rollback toy to make it a fun and challenging STEM activity for young students.
Homemade Holiday Music // Homemade Science with Bruce Yeany Bruce Yeany 2021-12-20 | I use some homemade "musical" instruments to play a couple of songs for the holiday season. 1. water bottles have a tire valve installed in the cap and are then pressurized to at amounts that allow it to correspond to musical notes2. Savart's wheel: 8 wheels that a number of ridges on it's edge that when spinning at the right RPM will play a musical scale when a piece of paper is held to them3. Wooden xylophone, 8 pieces of wood cut to length that are supported at the nodes correspond to a musical scale matching the first two instruments4. A bottle slide flute, changing the length of the bottle insert allows the pitch of the note to vary depending on it's length of inside the bottleI will bet presenting the the pressurized bottle xylophone and the slide bottle flute in a future video along with some additional information on making music with glass or plastic bottles
Chaotic magnetic pendulum. //. Homemade Science with Bruce Yeany Bruce Yeany 2021-11-24 | The erratic behavior of a bar magnetic pendulum can be captivating when it's movement become random due to the influence of attracting or repelling magnets placed near it pathway. Several variables can be explored to influence it's behavior such as the number arrangement of the magnets, initial release position and mass of the bar.
Savarts wheel, Good science, bad music Bruce Yeany 2021-11-16 | Savart's wheel is a circular disc with symmetrical teeth on it's edge and was developed in the 1600's as a method of demonstrating the relationship of frequency and pitch. As the wheel rotates, a piece of card stock is held against the teeth to make a steady sound that changes in pitch according to the number of teeth on the wheel or the speed that it rotates. Savart's wheel musicyoutube.com/results?search_query=savarts+wheelMusical roadsHungary has a road that plays musicyoutube.com/watch?v=XukLEaMbm9kMusical road in Albuquerqueyoutube.com/watch?v=ZxdC9qkrJocMusical road Lancaster Calyoutube.com/watch?v=KHnCiMJLtJwThe Japanese music road in Fujiyoutube.com/watch?v=WFafW3J-kP0&t=118s
Wind spinners...Kinetic art // Homemade Science with Bruce Yeany Bruce Yeany 2021-10-06 | Directions for some fascinating kinetic art to hang outside and enjoy whenever the wind blows. The spirals can either be singles strand or two. Interesting effect of the spirals appear to oppose each other in their rotation movement, either upward or spinning down. Placing a ball within the spiral adds to the illusion of the ball appearing to move up or down within the coil.
Chaotic pendulums entertaining behavior, // Homemade Science with Bruce Yeany Bruce Yeany 2021-09-24 | Chaotic pendulums have always been a fun classroom or home science demonstration. Here is an easy to build set of arms that can t be changed around to a few different chaotic pendulum variations. While these devices are usually made out of aluminum or plastics, this design is made out of standard stock 1/4 inch thick oak wood, a few commonly available skateboard bearings and a few nuts, bolts and washers.
Simple siren disc build instructions // Homemade Science with Bruce Yeany Bruce Yeany 2021-09-16 | Here are ideas on how to build and demonstrate a simplified version of the Seebeck siren disc that has been a classic physics demonstration showing the relationship between frequency and pitch since the 1840's. Using simple materials, toy such as foam plates, cardboard or old CDs, to make the siren disc and toy DC motors to drive it the video shows the steps needed to complete a simple investigation.CDs are meant to spin at 500 RPMs. and tend to explode around 30,000 RPMs, I measured the the highest speed reached by a CD on this device, around 3,200 RPMs. However, the holes may weaken the discs I also found a few of them separated into two thinner discs. While I will still use the CD. discs, any future pieces will most likely be made out of the foam plate material.
Simple siren disc demonstration //. Homemade Science with Bruce Yeany Bruce Yeany 2021-09-06 | Here is a simplified version of the Seebeck siren disc that has been a classic physics demonstration showing the relationship between frequency and pitch. The siren disc has a long history is sound studies and was first introduced by Thomas Seebeck in 1841 as a method of generating pure tones. It continues to be a staple of high school and college physics classes as it visually demonstrates the production of sound by interrupting the air flow through a series of holes located on a spinning disc.3 additional notes. gained from the commentsThomas Seebeck died in 1831. August Seebeck made the tone disk.Safety first, I should be wearing safety glasses, especially being near the spinning surface with my faceCDs are meant to spin at 500 RPMs. and tend to explode around 30,000 RPMs, I measured the the highest speed reached by a CD on this device, around 3,200 RPMs. However, the holes and slots can weaken the plastic substantially and the slotted one broke when the balloon pump nozzle touched it. While I will still use the CD. discs already made, any future pieces will most likely be made out of the foam plate material.
Curve ball Flingers Easy to Build and Throw // Homemade Science with Bruce Yeany Bruce Yeany 2021-08-26 | Easy designs for demonstrating the principles of how a curve ball bends due to the Magnus effect. You don't need to be good at throwing a ball, this piece will assist you and I guarantee you'll be seeing curveballs after just a couple throws. This video is a follow up a previous that went into more detail on the principles of the Magnus Effect.curve ball flingers part one can be seen here. youtu.be/KoffDYxXap0
Walking shoes roll-back toy // Homemade Science with Bruce Yeany Bruce Yeany 2021-08-08 | Walking shoes starts out as a couple of footprints attached to a roll of tape rolls across the floor making it appear that the footprints are walking. This simple design is then coupled with a roll-back toy design to make the walking feet self powered. The feet design is then changed to sneakers and then hiking boots that appear to walk and run across the floor. A great STEM activity starting point
Some pressure lifting fun and failures Bruce Yeany 2021-08-05 | Some students and I have a bit of fun using a giant lifting bag.. The bag is made out of a trp and duct tape was used successfully to lift a classroom full of students and then a 5000 pound car. However, it did not exactly go as planned in the first trials. Also trying to balance on a giant air bag turns out to be a lot harder than it looks.
Lifting a car with a vacuum cleaner and a tarp // Demonstration of Pressure Bruce Yeany 2021-07-31 | I've always thought that air lift bags were similar in behavior to simple machines in their ability to transform small amount of pressure into extremely large amounts of force. Usually air bags are smaller and made of very tough rip resistant fabrics and can be pressurized with 50 to 125 PSI to exert thousands of pounds of force. I'd like to show the inverse also hold true in using a small amount of pressure but spread over a very large area can also generate thousands of pounds of force. In this video my challenge is to lift a 5000 pound (2268 kilograms) car just using the exhaust of a small shop vacuum cleaner. The pressure exerted by this machine is less than one PSI or 6.9 kpa. However, this demonstration only requires about .3PSI (2kpa) to be successful. The small pressure applied to the whole undercarriage of the vehicle which measures about 118 square feet (10.5 square meters) is enough to lift the car completely off the ground. The car used in this demonstration is a 1978 Pontiac Grand Safari station wagon. Most common questions asked: engine is a 305 cu in., it does not have a third seat in the back. I've always loved stations wagons and owned this one for about 12 years, it is pretty much all original. Drives much different than today's SUV, feels more like a boat than a car. Does occasionally go to car shows and has also been to several science conferences where I've given workshops, it can hold quite a lot of science equipment when needed.
String Telephones versus Sound tubes... STEM project.... Homemade Science with Bruce Yeany Bruce Yeany 2021-07-27 | In preparation for a summer science STEM project, I visited my old school district and had some middle school students build and test some materials used in making string telephones and whisper or sound tubes. The Investigation was to determine the factors that gave us the best results, including changes in container materials, size of the horn, diaphragm size and stiffness, type of string, tautness of string, etc. Students are asked to rate the devices in four categories, including volume, clarity, pitch, tone and then summarize their findings. Future investigations will center around trying to improve the efficiency of the string telephones for better sound transmission.I apologize for the quality of sound in several of the clips as I was battling the noise from this summer cicada population. The devices actually sounded better than the recordings indicate as I had to use filters to try and reduce the reduce the unwanted noise levels.
International Physicists Tournament Bruce Yeany 2021-06-25 | The International Physicists Tournament is a yearly event that challenges teams of university physics students to research , test and explain a set of 17 problems given prior to the event. The teams consist of 6 students that have 8 months to come up with their solutions and will then meet at a host university to match their skills again other teams. Each yer the tournament is held in a different country.More information can be found at the IPT websiteiptnet.infoSlutions database iptnet.info/zenodo virtual laboratory touryoutube.com/watch?v=3bZeOScQt9cYoutube videos that were used in this videos as demonstrations are included in the IPT website and are listed below:Chain reaction Pepsi Maxyoutube.com/watch?v=IQJMyO6cfMolightning strikes at 103,000 FPSyoutube.com/watch?v=qQKhIK4pvYo&t=285sBrincle, underwater icicle “finger of death”youtube.com/watch?v=lAupJzH31tccopper’s surprising reaction to strong magnetsyoutube.com/watch?v=sENgdSF8ppA&t=80ssolar motor youtube.com/watch?v=VQqpnAKf9cMspaghetti on a wet clothyoutube.com/watch?v=NyewlvPgxxgwasher on a threaded rodyoutube.com/watch?v=oD6yxsCkkpg&t=5slaser show in a soap bubbleyoutube.com/watch?v=UNCNp1tBqKYice cube experimentyoutube.com/watch?v=rEstw8LLMpYIs this what quantum mechanics looks likeyoutube.com/watch?v=WIyTZDHuarQ
Curve ball Flinger....Magnus Effect. // Homemade Science with Bruce Yeany Bruce Yeany 2021-06-19 | Throwing a curve ball couldn't be made any easier than this simple device. Light weight foam or hollow plastic balls are the projectiles used in an easy demonstration of the Magnus Effect. The throwing paddle can be made out of wood, cardboard tubing, or plastic. Easy to make, even easier to throw. A few variations are shown that I've been using with middle school students for years. I've also used it at workshops for science teachers who had just as much fun with them as my students.video on the Flettner rotor. youtu.be/XsGin7CFaF8video on the cup flyers. youtu.be/05zF0sBwHe8
Having some fun with air pressure // Homemade Science with Bruce Yeany Bruce Yeany 2021-06-05 | A recent visit to my old classroom resulted in some fun demonstrations with air pressure. A few materials such a small vacuum cleaner, garbage bags, and tape are used to present classic examples of pressures changes such as vacuum packing students in a plastic bag and lifting students using a garbage bag "pillow" all leading up to the final challenge of trying to see if I can lift the whole classroom using the pressure exerted by one small shop vacuum.The activity to find the total amount of pressure exerted on a person's body can roughly be accomplished by covering them with news paper and then removing it and laying it flat and measuring the number of square inches. The pressure is then found by multiplying the area by 14.7 PSI. The Exploratorium has an excellent writeup on this investigation and can be found onlinehttps://www.exploratorium.edu/snacks/skin-size.One additional note; Although we did not show it, we had sanitizing wipes and liquid sanitizer hand lotion available in the room and outside and encouraged students to use them after each activity
Floating two objects in an airstream... the Coanda Effect // Homemade Science with Bruce Yeany Bruce Yeany 2021-05-30 | After posting a few videos on floating objects in an airstream, I received a challenge from a high school physics class wondering if it was possible to float two objects in the same airstream at once. Using the same parameters thet I used for other levitating objects, I was able to discover several pairs of objects that were able to levitate together. A large problem I ran into is the amount of air required for two objects tended to be a bit more than my air compressors could handle. In some cases the reduction in air flow as the tank pressure dropped was enough to limit the flight time.
Mystery box #3 revealed, disappearing egg yolk // Homemade Science with Bruce Yeany Bruce Yeany 2021-05-14 | Here is the answer to the mystery box shown in the previous video. These were used in my classroom as a challenge to my student's powers of observation. A raw egg is broken on the side of a container and the yoke is dropped inside. A cardboard square is placed on top one the opening and then the whole device turned upside down. Once upside down the cardboard is removed. One would think that the egg would come out of the container but it does not, turn the box upright and tilt it over again and the egg comes out. This video reveals the structure inside the containers and they were made.
Mystery box #3 disappearing egg yoke // Homemade Science with Bruce Yeany Bruce Yeany 2021-05-11 | Here is another mystery box from my classroom that I was used to challenge student's powers of observation. A raw egg is broken on the side of a container and the yoke is dropped inside. A cardboard square is placed on top one the opening and then the whole device turned upside down. Once upside down the cardboard is removed. One would think that the egg would come out of the container but it does not, turn the box upright and tilt it over again and the egg comes out. The question is, what is the design inside the box?
How to cook a hot dog in midair.... the Coanda effect // Homemade Science with Bruce Yeany Bruce Yeany 2021-05-04 | Cooking a hot dog as it is floating in a stream of air is not the easiest way to demonstrate the Coanda effect but it is one more example that I find a bit more interesting than the usual floating ping pong ball or beach ball, also a bit more challenging. The hot dog is supported by the atmosphere underneath it as the airstream flowing over the top reduces the air pressure above it. For more explanation and other examples check out the other videos that I've posted on this concept.levitating objects in a steam of air. youtu.be/UuX8_2h4jJgfloating carrots. youtu.be/OR49-PDoUfAflying baby dolls. youtu.be/yOXRfj9hqhII have found quite a few other objects that can float in a stream of air either from compressed air or a shop vac that have not been posted. Stay tuned for further updates
Throwing Axes // Homemade Science with Bruce Yeany Bruce Yeany 2021-04-29 | While the practice of throwing axes has been around for centuries, there has been a recent explosion in it's popularity as bar leagues and home target throwing have taken off. I remember first trying this as a Boy Scout 50 years ago and have tried it on occasion over the years. In this video I share sone of my own throws, basic science, a few trick shots and a couple modified battle axes I that I build for my own amusement
Flying baby dolls.... the Coanda effect in action // Homemade Science with Bruce Yeany Bruce Yeany 2021-04-21 | Flying balls were fun until I discovered there were all sorts of other objects that can be levitated in a stream of air that are much more interesting and challenging. To begin I followed a few simple rules: 1. objects cannot be supported by strings, 2. touch other surfaces, 3. objects must be able to be supported in airstream for at least 15 seconds. In this video, shop vacs or an air compressor provides the air stream to fly these babies. In previous videos I have flying carrots, cucumbers, spoons, footballs, pigs, to name a few. In a future I hope to post additional interesting household objects that I never expected would work.
Flying Carrots....the Coanda Effect. // Homemade Science with Bruce Yeany Bruce Yeany 2021-04-06 | I can't go back to floating ping pong balls or beach balls when there are so many other more interesting objects around that can be flown. Here is a short clip of how to levitate a carrot on a stream of air.
Singing Rijke Tubes // Homemade Science with Bruce Yeany Bruce Yeany 2021-03-18 | The Rijke tube, first described and name after Dr. P.L. Rijke is extremely simple device and yet is a wonderful demonstration of thermoaccoustics, (sound produced by thermal energy) it was first demonstrated dating back to approx. 1858. The device consists of a tube with a metal screen inserted about 1/4 or 1/5 of the way in from one of the end. The tube is activated by heating the screen with a Bunsen burner or torch sufficiently and when the tube is turned vertically emits a tone that will last up to about one minute.The frequency is dependent on the temperature of the air inside the tube, measuring it from the start until the tubed cooled enough that sound stopped showed a change of about 3 Hertz.Suggested length: I found success with various tube length but generally suggest the length should fall somewhere between 8 times to 24 times longer than the interior diameter of the tube, with the most success with a ratio of 14 to 1no success with tubes smaller than 3/4 inch diameter and any tube less than 1 inch diameter may.not work with 3 screens thickness.Longest successful tube so far has been a 7 feet long cardboard carpet tube Tube types/ materials that I tried, glass works well but must be borosilicate or pyrex suitable for high temperatures. Special care needed with glass and hot glass!Stainless steel, my favorite tubes, work well, sounds lasts the longest of any of the tubesaluminum works well galvanized pipe workssteel vent pipe okay sound seemed to die out quicklyaluminum downspout interesting in that it was the only pipe that where it wa being held was critical, tube itself vibrates copper, works but not well, conducts heat so quickly it gets hard to hold and does work when the bottom of the tube gets too hotcardboard works but not as long as metal tubes, must if careful about heating the screen, love the big bass sound emitted by carpet tubes
Soda Bottle Tumbling Toy // demonstration and construction tips Bruce Yeany 2020-07-27 | Here are the steps to construction of the bobble tumbling toy shown in a previous video. Tumbling toys have been around for quite a while, commercial ones are nice but are limited in as an instructional piece due to the ball being encased inside a wooden capsule and little to due in the way of experimentation. This simple version can be produced using some recycled materials found around the home. The clear plastic of the bottle allows for visibility of the movement inside, plus the the simple design allows for some changes to the materials used inside. Additional Gravity powered toys:soda bottle tumbling toy explanation youtu.be/47WJbJ-8KQMToy Physics, tumbling toys part one. youtu.be/CfCqWEdos2Atoy physics tumbling toys. part two. youtu.be/OBb1zclTVlgCardboard ramp walkers. youtu.be/kx-1RuBoSqsRamp walking pizza box. youtu.be/DirKEBJplDcPhysics of marble tracks review youtu.be/JWtsOiVxIIEToy Physics ramp walkers. youtu.be/aBq6VArNyQYBig high low track. youtu.be/88NZStgiIt0High low road track youtu.be/_GJujClGYJQSand pendulums. youtu.be/uPbzhxYTioMRolling objects investigation. youtu.be/-RK77vppFgQAngle or repose. youtu.be/7UM5R-oMBHcLooping pendulum. youtu.be/SXQ9VaYm3yQAdditional suggested video on tumbling toy Douglas. Stith video on Tumbling Toys variations explained youtube.com/watch?v=xgMQJ2dCThcand Tumbling toy variations youtube.com/watch?v=K58TNfb8JyM
Soda Bottle Tumbling Toy // Homemade Science with Bruce Yeany Bruce Yeany 2020-07-09 | Tumbling toys have been around for quite a while, commercial ones are nice but are limited in as an instructional piece due to the ball being encased inside a wooden capsule and little to due in the way of experimentation. Here is a simple version that can be produced using some recycled materials found around the home. The clear plastic of the bottle allows for visibility of the movement inside, plus the the simple design allows for some changes to the materials used inside. Additional Gravity powered toys:Toy Physics, tumbling toys part one. youtu.be/CfCqWEdos2Atoy physics tumbling toys. part two. youtu.be/OBb1zclTVlgCardboard ramp walkers. youtu.be/kx-1RuBoSqsRamp walking pizza box. youtu.be/DirKEBJplDcPhysics of marble tracks review youtu.be/JWtsOiVxIIEToy Physics ramp walkers. youtu.be/aBq6VArNyQYBig high low track. youtu.be/88NZStgiIt0High low road track youtu.be/_GJujClGYJQSand pendulums. youtu.be/uPbzhxYTioMRolling objects investigation. youtu.be/-RK77vppFgQAngle or repose. youtu.be/7UM5R-oMBHcLooping pendulum. youtu.be/SXQ9VaYm3yQAdditional suggested video on tumbling toy Douglas. Stith video on Tumbling Toys variations explained youtube.com/watch?v=xgMQJ2dCThcand Tumbling toy variations youtube.com/watch?v=K58TNfb8JyM
Gravity powered Escapement Wheel Part 2, Construction Bruce Yeany 2020-07-03 | In this follow up video, the basics of construction for this escapement mechanism are reviewed. This device was not particularly hard to build and can be simplified beyond what was shown here. In the prior video of this piece, the operation and various parts were identified as simple machines making it ideal as an instructional tool. Possible lessons in physical science concepts may include such concepts as, potential energy, kinetic energy, simple machines, compound machines, mechanical advantage and friction.
Gravity Powered Escapement Wheel.... Simple machine lesson Bruce Yeany 2020-06-21 | This escapement wheel is a good example of showing how simple machines work together in the performance of a task, in this case turning a flywheel. I have found that students have a natural curiosity to explore these types of devices and are very interesting in learning more about concepts such as energy, work, forces, friction, and mechanical advantage of simple machines as they are in operation. I've included some other devices and ideas that I've also found to be good teaching tools. Here is a list of the Videos of other devices shown during presentation Cardboard ramp walkers youtu.be/kx-1RuBoSqsCombination lock. youtu.be/MImPhJ7bpCQTrebuchet youtu.be/zhxYe4vIDH0Trebuchet youtu.be/qC6RJxFEMfYReciprocating air engine hand powered. youtu.be/pP8dwWxjoFsReciprocating air engine compressed air powered youtu.be/KkpMrLXwsksToy and machine dissection. youtu.be/ZqbtCTdTnZEFlag waving machine youtu.be/HDZqXy3PIqoSimple air engine. (not shown) youtu.be/o58Q5GFYIuoSimple and compound pulleys (not shown). youtu.be/ebwdFQB-5FgLever toy (not shown) youtu.be/uq93jczijeoRubber band powered car. (not shown) youtu.be/8mmL4XGvDZkQuestions 1.Draw a flow chart that follows possible energy types from the with origin, to power the device, and ending with the final form.2.Identify each simple machine and if it has a mechanical advantage. 3.What was the purpose of having the weight supported by two strings instead of a single line?4.Identify how the force changes as it progresses through device.5.Identify the class of lever for the locking tooth lever, how does the class change as it is in operation?6.Identify the pivot point, effort and resistance of the lever.Identify the class lever is the whole pendulum?7.If we cut off the top part of the pendulum, it would still act as a lever, identify the class, the fulcrum, effort, and resistance is the upper section of the pendulum were not attached to the wheel8.Identify the pivot point, effort and resistance of the lever with the stop tooth.9.How does the force change due to the size difference between the escapement wheel and the wheel with the applied force? 10.What would be the effect of changing the size of the wheel that the string is wrapped on? How would this effect the force on the escapement? 11.Why do the extensions on the winding wheel make it easier to turn? 12.What is the effect of applying force near the hub on the flywheel?13.Verify the change in force using a spring scale for the weight of the force applied to the escapement wheel. Determine the ideal measurements versus what was found and explain the differences.music used in video. Apple iMovie free file. carousel video clips used in video Piano escapement anamationfor pianoworld.comCC Anchor escapement created by ChetevornoCC Lever escapement created by Mario FrascaCC Grasshopper escapement, developed by John HarrisonCC Coaxial escapement developed by Adithyamic gaming..
Cardboard ramp walkers..... easy build Bruce Yeany 2020-06-01 | Simple ramp walking animals can be very easy to make, requiring only cardboard and scissors and perhaps a little glue. While much easier than ones made from wood, they are also less durable and may be a bit more temperamental requiring adjustments are cardboard integrity changes. Ramp walking toys have actually been around for quite a while, the first ones were metal elephants produced back in the 1800's. In the 1930 and 40's the popular material was plastic made that was made into Disney and other popular characters. Recently there has been a surge in wooden ramp walking toys. The wooden toys are very durable but requires wood working tools for making them.
Ramp walking pizza box delivers lunch Bruce Yeany 2020-05-25 | Ramp walking toys have actually been around for quite a while, the first ones were metal elephants produced back in the 1800's. In the 1930 and 40's the popular material was plastic made that was made into Disney and other popular characters. Recently there has been a surge in wooden ramp walking toys. The wooden toys are very durable but requires wood working tools for making them. While less durable it is also possible to make these toys out of paper and cardboard. Here is an example of ramp walkers made out of used pizza boxes. In future videos. I will show additional ramp walkers made from recycled materials that are easy to build with simple hand tools.
Supersonic ping pong balls...vacuum and compression cannon combination. PART TWO Bruce Yeany 2020-04-28 | If supersonic ping pong balls can't do enough damage alone, filling the balls with water first and then firing them will give them a bit more destructive punch. Ideally a vacuum cannon can expel a ping pong ball to exit velocities somewhere between 400-600 miles an hour, impressive by itself but adding a compressed air behind it and the ball can go supersonic. My combination appears to top out around 900 miles an hour, while several other more advanced models can reach 1200 mph, there is even one claiming to top 1700 mph.
Ping Pong Ball Cannon..Vacuum Cannon versus Compressed Air Cannon Bruce Yeany 2020-04-19 | Ping pong balls are a favorite projectile for a vacuum cannons or a compressed air cannon. Either one can generate tremendous speeds for the muzzle velocity, up to speeds approaching 600mph. We'll take a look at the operation of both types individually and see how they compare IN part two we'll combine the two together to generate speeds well in excess of the speed of sound.
Soda bottle Face Shield - Homemade Science with Bruce Yeany Bruce Yeany 2020-04-02 | Here is a simple face shield that is made out of a soda bottle, a piece of foam rubber, duct tape and a ribbon. It takes about 5-10 minutes to make. It not as good as a commercial one but an be used in a pinch. ADDITIONAL ADVICE;1.The shield can be made longer by adding additional material to the bottom of it. It does not have to be clear since you don't look through it at that there.2.A shield is much more effective when a mask is added.3.To keep it from fogging, ad a drop of soap and wipe dry. the soap film prevents the water droplets from fogging. Dish soap seems to work the best, though hand soap will also work
Element Puzzle-Quarantine activity for students - Bruce Yeany 2020-03-25 | Given below.....Here is a short worksheet that I used to help middle school student familiarize themselves with the names of elements on the periodic table. It is mostly bad puns that were student generated. Elementary Puzzle find the element names that would best match up as synonym, bad puns, or completion for the phrases given below. Some may have more than one answer, GOOD LUCK, 1. Copper Policeman. 2. _____can3. What doctors are for 4. What you do in a play5. make copies of pictures use a electron device6. Get him7. Person who rides waves8. Chemical apache9. to press a shirt10. Directions ( past tense)11. Result of swallowing food coloring12. A kitchen area with a drain13. A ship’s kitchen14. 1/20 of a dollar 15. An amusing prisoner16. What you do before you brand a steer17. If your hair falls out you .............18. A large building used to store autos19. Funds from mother’s sister20. The lone ranger’s horse21. The name of a red flower22. Mickey Mouse’s dog23. Superman’s home planet24. View by a boy whose name is Cal25. popular drinkanswers according to atomic number1. 292. 13. or 50 3. 2. or 964. 895. 216. 557. 168. 499. 2610. 8211. 7412. 3013. 3114. 2815. 14 16. 6317. 2718. 619. 5120. 4721. 3222. 9423. 3624. 2025. 11
