TheBackyardScientist
Best Fire Tornado - DIY - no moving parts!
updated
Safety Third Podcast - youtube.com/channel/UC7QE72cxiBkiwnvGoFfqYOg/videos
discord- discord.gg/DqPbGgq
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Honey finds coupons with one click. Thanks to Honey for sponsoring!
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Safety Third Podcast - youtube.com/channel/UC7QE72cxiBkiwnvGoFfqYOg/videos
discord- discord.gg/DqPbGgq
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Featured Videos
Potato cannon tank - youtube.com/watch?v=ytdgCsqjA-A
Potato cannon artillery - youtube.com/watch?v=JgMBKg9d3Js
Quad barrel - youtube.com/watch?v=a1XdPYEsf_o
Safety Third Podcast - youtube.com/channel/UC7QE72cxiBkiwnvGoFfqYOg/videos
discord- discord.gg/DqPbGgq
Twitter - twitter.com/ChemicalKevy
Instagram - instagram.com/backyardscientistofficial
Merch - https://shop.backyardscient.ist/
Safety Third Podcast - youtube.com/channel/UC7QE72cxiBkiwnvGoFfqYOg/videos
discord- discord.gg/DqPbGgq
Twitter - twitter.com/ChemicalKevy
Instagram - instagram.com/thebackyardscientist_
Russian Rocket - youtube.com/watch?app=desktop&v=imRAnN4ylZs
Fusion 360 files - drive.google.com/drive/folders/1ygPYCI8e1HP3wuyTK-7k_HOQIu5aVSxR?usp=sharing
Safety Third Podcast - youtube.com/channel/UC7QE72cxiBkiwnvGoFfqYOg/videos
Send me memes - discord.gg/DqPbGgq
Twitter - twitter.com/ChemicalKevy
Instagram - instagram.com/backyardscientistofficial
Thanks to youtube.com/user/frenchcreekvalley/videos for the pogo stick!!
Hop Rod user manual - imgur.com/gallery/E5nHcg1
Twitter - twitter.com/ChemicalKevy
Come hangout on Discord! discord.gg/DqPbGgq
Instagram - instagram.com/backyardscientistofficial
Twitter - twitter.com/ChemicalKevy
Come hangout on Discord! discord.gg/DqPbGgq
Instagram - instagram.com/backyardscientistofficial
Louis weiss - slapping a chicken to cook it - youtube.com/watch?v=LHFhnnTWMgI
induction heater control schematic easyeda.com/kevindk9/pll-induction-heater
induction heater power stage schematic - instructables.com/30-kVA-Induction-Heater
content.instructables.com/ORIG/F20/WZQP/GQBCHZIY/F20WZQPGQBCHZIY.png
another good resource - http://inductionheatertutorial.com
Special thanks to the HV gang, and styoropyro discord servers for helping me, and Steve Ward for the brilliant design for the matching transformer stage, and selling some of his old capacitors and ferrite.
ferrite cores are from TSC international 70-54-32 E cores
Carefree Melody by Twin Musicom is licensed under a Creative Commons Attribution 4.0 license. creativecommons.org/licenses/by/4.0
Source: http://www.twinmusicom.org/song/302/carefree-melody
Artist: http://www.twinmusicom.org
Science Bros:
@William Osman
@PeterSripol
Twitter - twitter.com/ChemicalKevy
Come hangout on Discord! discord.gg/DqPbGgq
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Thanks to The Great Courses Plus for sponsoring this video!
Science Bros
@William Osman
@PeterSripol
Twitter - twitter.com/ChemicalKevy
Come hangout on Discord! discord.gg/DqPbGgq
Instagram - instagram.com/backyardscientistofficial
Science Bros
@William Osman
@PeterSripol
Twitter - twitter.com/ChemicalKevy
Come hangout on Discord! discord.gg/DqPbGgq
Instagram - instagram.com/backyardscientistofficial
Learn how a VPN works: youtube.com/watch?v=yCWNRzoQGis
Cool video on how lead shot is made: youtube.com/watch?v=2qybStWdYcsa
Come hang out in the discord! discord.gg/DqPbGgq
Check out the Micro Center Custom PC Builder: https://micro.center/dd016
Join the Micro Center Community: https://micro.center/c9f9e
Padlock vs Ramset gun - Lock Picking Lawyer - youtube.com/watch?v=Wimo09WV-rY
Modern Rouge - youtube.com/watch?v=jG2muodjgAo&t=36s
Jeff the maintenance man - youtube.com/watch?v=MhqMWeT4q-8&t=153s
Twitter - twitter.com/ChemicalKevy
Come hangout on Discord! discord.gg/DqPbGgq
Instagram - instagram.com/backyardscientistlofficial
TikTok - tiktok.com/@thebackyardscientist
Come hangout on Discord! discord.gg/DqPbGgq
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More Below!
David's Website: bubblerings.com
Here are the 3D files for the bubble ring flipper: thingiverse.com/thing:4600307
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I have been wanting to make this laser FOREVER and i could have made a hour long video on it. But dont worry, I have much more planned for this laser!
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secret discord discord.gg/DqPbGgq
There were never any planes in danger and I can prove it with science. First of all, we never turned the beam on more than 4 amps (50 watts)because we were having cooling issues and couldn't really monitor it up on the car.. (we tried 6 amps once but it was too bright.)
So assuming the beam stayed perfectly collimated, the beam would have an area of 430 square centimeters. If the laser was running at 25% power (4 amps/50 watts) that would be about 110mw/cm2 from the telescope. However, your pupil is only half this size fully open, so a pilot could theoretically receive a 50mw/cm2 exposure. A decent amount, but you have to remember even the smallest plane is traveling 150 miles per hour which would limit total exposure time to only 3ms( time it takes to cross a 9 inch beam). That puts it at the cusp of the maximum exposure limit, which is defined as "about 10% of the dose that has a 50% chance of creating damage under worst-case conditions." Here is the chart im referencing en.wikipedia.org/wiki/Laser_safety#/media/File:IEC60825_MPE_W_s.png
So even under perfect conditions, this would still be 10x less than the exposure that carries a risk of damage. That's assuming perfect conditions, but in reality it was a hazy night, the laser would not be perfectly collimated, the atmosphere would distort the beam, the windows in the airplane would deflect some of the beam, unless the pilot was staring directly at the beam they would receive a smaller dose, I tried to keep the beam moving when up in the sky, and most planes are moving faster. all of this meaning the pilot would be exposed to a much lower amount of laser energy in the real world than under perfect conditions. even at full power this laser is still within the safety factor of the maximum exposure limit. Plus do you know the odds of hitting a plane with a laser when your trying not to? just pick a random star in the sky and wait for a plane to fly over it.
TikTok - tiktok.com/@thebackyardscientist
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Join the secret beancord server
discord.gg/DqPbGgq
Store - outloudmerch.com/collections/backyard-scientist
Get your own claymore here - amzn.to/3eMUaO5
Twitter - twitter.com/ChemicalKevy
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Thanks Glytch for the Roomba!
youtube.com/user/KellerRobotics
twitter.com/GlytchTech
Featuring:
William Osman - youtube.com/channel/UCfMJ2MchTSW2kWaT0kK94Yw/videos
Peter Sripol - youtube.com/channel/UC7yF9tV4xWEMZkel7q8La_w/videos
Tom Stanton - youtube.com/user/tomstanton282/videos
Jabrilis - youtube.com/channel/UCQALLeQPoZdZC4JNUboVEUg/featured
Allen Pan - Sufficently Advanced -youtube.com/channel/UCVS89U86PwqzNkK2qYNbk5A
As an Amazon Associate I earn from qualifying purchases. AKA if you buy that claymore
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My brother and I decided to make an old school video back at the old backyard! we poured molten aluminum on some glass cubes and spheres to see what would happen, and to get some cool slow motion footage. We also melted glass and aluminum together to see if they would mix. Its unfortunate the glass sphere melted and fell over in the kiln, oh well, it was still interesting!
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Shark Shirt - amzn.to/2MYMG0O
Follow my friend too! - bit.ly/38irUPa (instagram)
Making Green Sand - youtube.com/watch?v=xFq9wpF0L8M
Song 1 - treat yourself (youtube music library)
Song 2 - the good old days (youtube music library)
Song 3 - “Happy” from soundcloud.com/mbbofficial
amazon affiliate disclaimer:
Backyard scientist is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to amazon.com.
I'm thankful for all my viewers and I wanted to share a little gratitude back. Go to outloudmerch.com/bys & use code SCIENCE at checkout to get 15% off my merch through 12/2. There's new youth sizes as well!
You can find the 3D files on my website https://www.backyardscient.ist/foam-glider
Also thanks to my friend photogenic firearms for helping me youtube.com/channel/UC7CYQcN8KaZTccRJ1OixCAQ
instagram.com/photogenic_firearms?igshid=kchp3tjatole
Follow me on Instagram! instagram.com/backyardscientistofficial
I was curious if molten aluminum is bulletproof, and now you are too!
twitter.com/ChemicalKevy
instagram.com/backyardscientistofficial
For the Fountain head:
-6" long 1/2 diameter PVC pipe. Threaded on both ends. smile.amazon.com/Orbit-Pack-Flexible-Sprinkler-Riser/dp/B07B89XQ9K
-90 degree barb fitting smile.amazon.com/dp/B004672YH0
-5/16 stainless steel washer smile.amazon.com/dp/B07KPZDLTJ
-3/32 brass tube smile.amazon.com/dp/B000BQO57M
-1/4in brass barb smile.amazon.com/dp/B002SAO7XQ
-straws smile.amazon.com/dp/B06XYTCPJZ
Pump:
-620 G.P.H.+ Take your pick from one of these. smile.amazon.com/s?k=600gph+pump&ref=nb_sb_noss_1
The height of the fountain is a function of the pump output and the nozzle size. If you get a bigger pump you can get a larger waster size for a fatter column of water or a skinny nozzle for a higher column of water.
Misc:
-Propane tank
-1/4in tube for propane smile.amazon.com/dp/B07C3628R5
-1/2in hose for water Https://smile.amazon.com/dp/B003VAY4SA
-propane tank adaptor smile.amazon.com/dp/B07GZNMS9S
-lots of hot glue
Chris's channel & instagram
youtube.com/user/rol36915/featured
instagram.com/chrisrollinsvideo
Heres the cool water balloons i used in the video amzn.to/2llGiTH
amazon affiliate disclaimer:
Backyard scientist is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to amazon.com
Sometimes I get comments wondering where I get my shirts and stuff from
Hawaiian Shirt Shirt - amzn.to/2Ifo1Al
Hawaiian Shark Shirt (from ballista video) - amzn.to/2MYMG0O
10L Liquid Nitrogen Dewar - amzn.to/2IgLJwb
Insulated glass bottle - amzn.to/2XlRyRC
My Camera - amzn.to/2WGfx9J
Giant Air Plant information:
Its scientific name is Tillandsia utriculata. They are called 'air plants' because they typically live in trees. People sometimes think the name means they can survive air alone, but thats wrong! they still need water and nutrients (typically from decaying leaf litter they collect). They don't have a very high survival rate on the ground, and tend to die from staying wet for too long. Im just trying to raise awareness because I see people throwing them out or mowing over them all time time and there are very few left in my area.
https://entomology.ifas.ufl.edu/frank/savebromeliads/floridas-bromeliads/Tillandsia-utriculata.html
morningwoodgrowers.com/about-us/endangered/tillandsia-utriculata-aka-giant-wild-pine.html
amazon affiliate disclaimer:
Backyard scientist is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to amazon.com.
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And of course shoutout to The King of Random where i first saw this idea ! youtube.com/watch?v=jrje73EyKag
Ive always wanted to make my own induction heater, but this one is only the beginning. Im planning to make a more powerful one to do more stuff with molten steel!
Instagram - instagram.com/backyardscientistofficial
Twitter - twitter.com/ChemicalKevy
Facebook - facebook.com/TheBackyardScientistOfficial
Thanks Lindsay Wilson for the neat idea to modify capacitors- http://www.imajeenyus.com/electronics/20120512_film_capacitor_dissection/index.shtml
And thanks to www.GensTattu.com for the batteries!
outloudmerch.com/collections/backyard-scientist - MERCH
Grahams Instagram - instagram.com/photogenic_firearms
Grahams Youtube - youtube.com/channel/UC7CYQcN8KaZTccRJ1OixCAQ
I wanted to expand on a concept I explored in two previous videos but this time go BIGGER. I would say it worked better in the first videos though! You just can't compete against a classic 1oz lead big boi.
Previous videos in the series
youtube.com/watch?v=dhbWfhBDNzk
youtube.com/watch?v=T85d7ST2yxU
Exploding Bullet video - youtube.com/watch?v=T85d7ST2yxU
Codys Lab video - youtube.com/watch?v=MTHhRkLLYJ4
use code BACKYARD to get 75% off a 3 year plan and an extra
month for free. Protect yourself online today!
Today I show you how dangerous table saw kickback can be, as well as how angle grinders can shatter and why its important to be safe with power tools!
First I tried Disassembling the battery to learn about it. Then I tried shocking the battery with a tesla coil. Surprisingly that did not work, so I connected it to a car battery to overcharge it and it worked great. Of course, by working great i mean it caught on fire. Finally I incinerated the battery with a 30W infrared laser in a fishtank filled with 100% pure oxygen.
Reddit link reddit.com/r/Whatcouldgowrong/comments/9ejgcv/wcgw_if_i_play_with_a_gun_on_instagram_live
Ok guys, no insults or personal attack will be allowed in the comments. keep it clean. this video is a learning example for following the rules of handling a gun, not a witch hunt. #1 THE GUN IS ALWAYS LOADED. dont play with guns. don't point guns at stuff you don't want to shoot.
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the gun - pyramydair.com/s/m/Hatsan_AT44_10_Long_QE_Air_Rifle/3390 KEEP READING!
The phone can not record to the SD card or internally fast enough either. I filmed the second shot from the phone, and the video is corrupted. I used a free app to preview the file, and it does not show the last few frames before i shoot the gun. here is the file. drive.google.com/file/d/1nzQonW9JhQny5HWE8UpWnDfmWjcFZcdY/view?usp=sharing use mp4 fixer on android to view the file if you want to see for your self.
Chucks video - Wicked Whip Zip-It - youtube.com/watch?v=vrwWYjKs6MU&feature=youtu.be
Backyard Scientist Merch! - outloudmerch.com/collections/backyard-scientist
You can follow me on my instagram, facebook, and twitter also!
Instagram: instagram.com/backyardscientistofficial
Twitter: twitter.com/ChemicalKevy
Facebook: facebook.com/TheBackyardScientistOfficial
Referenced Videos:
Fire Whip - youtube.com/watch?v=jMFL3UQ06FU
Schlieran imagry - youtube.com/watch?v=lbomsOPSSII
I never saw anybody try it before so I was curious. At first I thought about getting a few hundred of the regular sized glue traps from the store and stapling them to the plywood but decided the bulk glue would be more economical and cover more surface area. It was not a cool color like the stuff in the store but I don't mind.
I had fun, thanks for watching!
You can follow me on my instagram, facebook, and twitter also!
Instagram: instagram.com/backyardscientistofficial
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Facebook: facebook.com/TheBackyardScientistOfficial
outloudmerch.com/collections/backyard-scientist
Nicks video is here -- youtube.com/watch?v=ljltAHsy7x8&feature=youtu.be
Styropyro for more cool lasers -- youtube.com/watch?v=iVrJUbeuG44
Check out my new website and shirts! -- http://www.thebackyardscient.ist
thanks to Wix for sponsoring this video
Keep Reading below!
Backyard Scientist merch!! https://thebackyardscient.ist/shop/
Thanks iX Cameras http://www.ix-cameras.com and Matt Rece youtube.com/user/mattrece/videos for helping with the high speed shots!
Giaco Whatever video: youtube.com/watch?v=BrtBc-9pQv4
A few more thoughts on the Nerf Cannon.
Yes, I know if I used a longer barrel I could get higher speeds, but I did not want to deal with a 20ft long gun. I think a 6ft barrel was enough to show what a supersonic nerf dart can do.
Davekni got a pingpong ball going 2000mph which is 2930 ft/s!! (mach 2.5). His barrel was 20ft long. It can shoot through 3/4in plywood! You can see that video here- youtube.com/watch?v=5xuwu4gjNbQ
I always thought the speed of sound was the limiting factor, because the flow 'chokes' at mach 1. Its a big controversy among air-gunners, and theres like a 900 post topic on it here gatewaytoairguns.org/GTA/index.php?topic=102604.540. Some guy got one going like 2100 ft/s which I thought was impossible. youtube.com/watch?v=qUq4OQqZ2bw So it prompted me to do some research.
It turns out flow does choke at mach 1, but its only the mass flow that chokes. The gas can still expand supersonically.
Also a big thanks to Dr. Carl Knowlen from University of Washington, and u/Overunderrated, u/TheQueq, and u/InductorMan from reddit.
Here are the papers I referenced:
A COMPARISON OF DISTRIBUTED INJECTION
HYPERVELOCITY ACCELERATORS - researchgate.net/publication/268456817_A_comparison_of_distributed_injection_hypervelocity_accelerators
Probably the most concise and easily understood!
Numerical Evaluation of a Light-Gas Gun Facility for Impact Test
researchgate.net/publication/270629342_Numerical_Evaluation_of_a_Light-Gas_Gun_Facility_for_Impact_Test
Shows different muzzle velocities for different barrel lengths
THE THEORY OF HIGH SPEED GUNS
http://www.dtic.mil/dtic/tr/fulltext/u2/475660.pdf
Probably the most extensive on the subject "The reader Is assumed to be an advanced student in engineering." I hope you payed better attention in physics that I did.
Outro music by MDK, youtube.com/watch?v=2_t5Lm040Gw
Fortnite clip from reddit.com/r/FortNiteBR/comments/8e7vq6/the_fortnite_foodchain