Direct Measurement Video of a Rotating Water Tank: Purple Hexane and Parabolic Fish Peter Bohacek 2013-07-13 | A fish tank rotates at about 1 rotation per second. The surface is a paraboloid. What would fish do in such a tank? Watch, and find out!
Rotating Water Tank: Purple Hexane and Parabolic Fish Peter Bohacek 2018-10-10 | A fish tank rotates at about 1 rotation per second. The surface is a paraboloid. What would fish do in such a tank? Watch, and find out!For more measurement-based science videos, check out:www.pivotinteractives.com
Examples of Direct Measurement Physics Videos Peter Bohacek 2014-05-30 | This video shows some examples of Direct Measurement physics videos. These videos can be used as supplements or replacements for traditional word problems in physics instruction. For more information, visit the Direct-Measurement Video website http://serc.carleton.edu/sp/library/direct_measurement_video/index.html
Mag-Lev Motor (test version) Peter Bohacek 2014-04-03 | YBCO disk levitates a disk magnet. Current through the disk causes rotation as a Faraday motor.
Direct Measurement Video: Hover puck 2-d motion Peter Bohacek 2014-03-06 | A low-friction "hover puck" slides across the floor. Express the velocity in component form and angle-magnitude form.
Direct Measurement Video: Launch of Curiosity Mission to Mars Peter Bohacek 2014-02-17 | Can you determine the acceleration of the rocket using the information from this video?
Direct Measurement Video: Keep in Time! Peter Bohacek 2013-10-28 | Nine musical students line up on a soccer field and clap to the beat of a megaphone metronome. Why don't they appear to clap together? For more videos like this one: http://goo.gl/ipe1C
Direct Measurement Video of a Bicycle Wheel Gyroscope Peter Bohacek 2013-07-15 | Determine the ratio of the moment of inertia of the bike wheel to the moment of inertia of the student on the platform.
Direct Measurement Video: Dry Ice Puck Slides on a Circular Hoop Peter Bohacek 2013-03-26 | A re-enactment of the classic problem -- with an added twist. For more videos like this one: http://goo.gl/ipe1C
Direct Measurement Physics: The Flyboard Peter Bohacek 2012-11-13 | Can you determine the flow rate (in kg/s) for the water ejected from the main nozzles that would provide enough thrust to lift the pilot and platform? Thanks to Matt Vonk of University of River Falls.
Direct Measurement Physics: Cart Accelerated by a Mass on a String Peter Bohacek 2012-11-12 | The low-friction cart on a horizontal track is accelerated by a mass hanging on a string attached to the cart. Can you predict the acceleration of the cart using the information in the video? Does the actual acceleration match the acceleration you'd predict? For more videos like this one: http://goo.gl/ipe1C
Three balls roll off a table. Which lands first? Peter Bohacek 2012-10-11 | Three balls roll off a table edge at different speeds. The video is overlayed so that all three balls appear to leave the table at the same time. Watch what happens as the balls fall.
Physics Activity: Making a Free Fall Flicker Peter Bohacek 2012-10-11 | Which will land first, a ball released and allowed to drop downwards, or an identical ball tossed sideways from the same height at exactly the same time? Here's a quick experiment to answer that questions.
Direct Measurement Video Physics: Roller Coaster 3 Peter Bohacek 2012-07-24 | Video of a roller coaster on an inverted section of track. Recorded with a high resolution, high speed Sony FS700 at 240 frames per second. For more videos like this one: http://goo.gl/ipe1C
Direct Measurement Video Physics: Roller Coaster 2 Peter Bohacek 2012-07-24 | Video of a roller coaster recorded with a high speed, high resolution camera. Use this video for physics. For more videos like this one: http://goo.gl/ipe1C
Direct Measurement Physics Video: Roller Coaster 1 Peter Bohacek 2012-07-24 | This roller coaster has just rolled down a hill 60 meters high. Use physics to calculate something interesting about this roller coaster. For more videos like this one: http://goo.gl/ipe1C
Direct Measurement Video Physics: The Wave Ride Peter Bohacek 2012-07-19 | Use the rulers and frame counter to make measurements. Using physics ideas, what can you calculate? For more videos like this one: http://goo.gl/ipe1C
Bohacek Sibley Graduation Speech Peter Bohacek 2012-05-04 | Peter Bohacek's speech at the 2007 Henry Sibley graduation ceremony
Direct Measurement Physics: Gravity-Powered Clock Time Lapse Peter Bohacek 2012-04-08 | This video shows a "grandfather" clock powered by suspended masses that are pulled downward by the force of gravity. What quantities can you calculate using information from this video?
Physics: falling meter stick and marbles Peter Bohacek 2012-01-29 | When the meter stick pivots, the marbles fall in a beautiful and surprising pattern. Can you explain why?
circular acceleration puzzler Peter Bohacek 2010-10-22 | A water-filled jar with one floating and one sinking object suspended inside it. The jar sits on a rotating platform.
Chemistry vs Physics Show 2010 Peter Bohacek 2010-10-04 | Highlights of the 3rd annual Chemistry vs Physics Show by the Henry Sibley High School Chemistry and Physics Demo Team
Pneumatic cannon and free falling target Peter Bohacek 2010-08-06 | The Henry Sibley High School Chemistry and Physics Demo Team built a demonstration based on the famous "monkey and the hunter" problem: how do you aim a projectile so it will hit a target that begins to fall the instant the projectile is launched? The target is suspended from an electromagnet. The pneumatic cannon has an optical sensor. An optically controlled switch stops the flow of current to to the electromagnet when the cannon is fired. Video has diagrams and photos of the major components of the project.Special thanks to: Jared Poetter, Zach Hesterberg, Max Schadegg, and Charlie Hansen for their work and help on this project.
Sibley WebAssign Peter Bohacek 2010-03-18 | Students at Henry Sibley find WebAssign to be an effective way to learn science. Thanks to Cedrick Holden, Ian Fox, Kelsey Mork, and Dann Hurlbert.
Einsteins Equivilence Principle Peter Bohacek 2010-01-27 | A demonstration of Einstein's Equivalence Principle. Can you figure out what is causing the strange behavior of the water? Filmed by Doug Petty, Danny Schuleman and Phil Johnson.
High speed vacuum cannon ping pong ball fired through a pop can Peter Bohacek 2010-01-16 | A ping pong ball fired from a vacuum cannon at about 500 miles per hour goes through an empty pop can. 1000 fps video taken with Casio EX FC100. Mass of pop can = 22 grams. Mass of ping pong ball = 2 grams. Filmed by Danny Schuleman , and Phil Johnson, Henry Sibley High School class of 2010.
high speed flames.mov Peter Bohacek 2009-12-12 | Flames in a fire place shot at 420 fps. First video taken with Casio EX FC100.
Projectile or Not? Fight Scenes in Crouching Tiger Hidden Dragon Peter Bohacek 2009-11-02 | Projectile Motion is a specific type of motion with a clear mathematical definition. But do movie producers make stunts where falling people move in this way? The answer in this movie is...sometimes!
Henry Sibley Chemistry vs Physics Demo Highlights 2009 Peter Bohacek 2009-06-10 | Henry Sibley High School chemistry and physics students try to answer the age old question: which is cooler chemistry or physics? In this show, two teams of students try to convince the audience that their favorite branch of science is cooler. Thanks to Dann Hurlburt for filming and editing this video.
color light adding demonstration Peter Bohacek 2009-06-07 | An apparatus to show human perception of color light mixing. Three LEDs, one red, one green, one blue, are mounted inside a ping-pong ball. Adjusting the intensity of each color allows students to create any color. This apparatus is based on a paper by Gorazd Planinsic from the University of Ljubljana, Solvenia, published in The Physics Teacher March 2004. Construction by physics students at Henry Sibley High School.
rocket backpack at Sibley graduation 2009 Peter Bohacek 2009-06-03 | Using the rocket backpack after the commencement address during the 2009 Henry Sibley High School graduation ceremony.
maglev pendulum Peter Bohacek 2009-06-02 | A (broken) piece of BSCCO superconductor cooled using liquid nitrogen suspended above a curved track of neodymium magnets.Work done by physics students at Henry Sibley High School.
rocket backpack Peter Bohacek 2009-06-01 | This is a CO2 fire-extinguisher strapped to my back. The valve is actuated by a bicycle brake lever and cable. Roller skis are safe and easy to control. Physics fun!
room temperature maglev Peter Bohacek 2009-03-17 | A small neodymium disc levitated at room temperature between two slabs of pyrolytic carbon. A larger neodymium magnet, not visible above the upper piece of pyrolytic carbon, provides the lifting force. Pyrolytic carbon repels both poles of the small neodymium disc, stabilizing it. work done by physics students at Henry Sibley High School
Wind shear time lapse Peter Bohacek 2008-06-08 | Time lapse of cloud motion after thunderstorm 5 June 2008 filmed at 1 frame per second camera facing north
snow melting time lapse Peter Bohacek 2008-04-06 | on a sunny spring day, we play in the yard while the snow melts
Teaching 101 Peter Bohacek 2007-05-03 | Students at Henry Sibley High School following teachers instructions in Physics Lab
