Giant Mousetrap powered Car5m54s

Giant Mousetrap powered Car

This is just a mini-video to announce i've been filming with a TV show for the past few months! Hope this video finishes uploading by the time the episode airs!

This Dangerous 'Paint' Is Not Something You Want To Cover Your House With7m31s

This Dangerous 'Paint' Is Not Something You Want To Cover Your House With

After so many demo videos filled with excitement, it is high time that Kevin Kohler lets us watch some paint dry for a while...Just kidding! Kevin, a.k.a. The Backyard Scientist decided to try himself at some thermite paint making, but just mixing some thermite powder with regular paint isn’t going to cut it. First of all, regular paint takes forever to dry and second - it isn’t flammable enough! So what Kevin did was make the base for the paint, by dissolving ping pong balls into acetone, and then adding the thermite powder. Ping pong balls are made of 75% nitrocellulose, which is the main ingredient in smokeless powder. Smokeless powder is the name given to a number of propellants used in firearms and artillery that produce negligible smoke when fired, unlike the black powder they replaced. He chops up six ping pong balls and covers them with a cup of acetone. To speed things up, regular mixing isn’t going to cut it, so he Frankensteined a mixer by curving some wire from a wire hanger and sticking it a power drill. Time for some tests. Watermelon season is ell behind us, but pumpkins are abundant still. So Kevin paints a face on a pumpkin, sprinkles some magnesium on top to speed up the process and lights it up. The magnesium powder gives way for the thermite paint to light the whole thing up like a Christmas tree. A very small, round, orange, dangerous and very unfriendly Christmas tree. How about painting a square piece of plywood with the stuff and light it up? It cascades all across the plywood like nobody’s business! Whoa! However, if you decided to paint the insides of your computer with some thermite paint in order to PERMANENTLY erase your browser history, it wont work. Thermite burns bright and fast, so there isn’t enough time for it to actually burn the hard drive. Sorry. Visit to get 2 kits for the price of one from now until thanksgiving! This video was sponsored by 23andMe, thanks! PS 3 million subscribers :D:D:D:D:D:D:D

Making a Sword with THERMITE!10m09s

Making a Sword with THERMITE!

Usually Thermite is used to destroy things... Instead, I wanted to use it to make something to destroy things with. If you have never heard of it -Thermite is a mixture of Iron Oxide (rust) and Aluminum powder. When you ignite it a vigorous chemical reaction takes place which results in liquid iron

This Is How To Cook Dinner With Science And Fail Miserably9m18s

This Is How To Cook Dinner With Science And Fail Miserably

Kevin Kohler, the Backyard Scientist wouldn’t be what he presents himself to be, if he didn’t try and actually cook an entire meal using science. Now, one might say that cooking in on itself is actual science, but Kevin took at a few steps further and used almost every contraption he ever made in his backyard lab to prepare a recipe for Shrimp & Fresh Gnocchi with Corn, Basil, & Cherry Tomatoes from his latests sponsor, Blue Apron. The first step was to “blister the tomatoes”, which instead of putting them on the stove, Kevin used a carbon arc light. That contraption shines brighter than a lighthouse on a dark night and it did the job quite right. That gave Kevin the green light to go on, so he wraps an ear of corn in tin foil and puts it in his kiln made from an old oven. He thinks it should reduce the 30 minutes the recipe calls for to cook the corn to about 6. Sounds easy enough, until few minutes later he find a piece of charcoal where an ear of corn used to be. Oops. He then cooks the shrimp with electricity in a vacuum sealed jar, which also goes rather successfully. Raw sea food should only be consumed when prepared by a professional and Kevin isn’t one, that’s for sure. When the moment of truth came, Kevin’s food looked like a mad scientist was let loose in a kitchen. But it’s the thought that counts. Sponsored by Blue Apron: The first 100 people will get three free meals on their Blue Apron order! Click here:

Prank It FWD – Sumo VS.  Football8m32s

Prank It FWD – Sumo VS. Football

Backyard Scientist: Thanks to Kellogg’s Frosted Flakes for sponsoring this video! I spent some time on the football field teaching a group of kids how they can use Newton’s Second Law to improve their game.

Molten Metal Squirt Gun Melts Right Through Many Objects 9m56s

Molten Metal Squirt Gun Melts Right Through Many Objects

How cool is this? After noticing that many people were making some very crazy water guns, 'TheBackyardScientist' decided to make a cool squirt gun as well. It isn't your every day water gun, it actually shoots molten metal! He shows us his two very cool squirt gun inventions, they look very impressive! He uses random objects and melts them down, and waits for them to harden. These molds are what he puts into the gun, cool! When the gun squirts out the molten metal, it is so crazy to see that the object he hits, melts right in front of our eyes! This is awesome! Normally you only see this kind of stuff in movies. He even shoots the molten metal at the camera, but of course, he puts glass in between the gun and the camera, you don't want the camera to melt! Luckily the glass didn't break or else that camera would have been melted! Even better, the metal is reusable, no need to throw it out! He continues to use the molten gun in many more different scenarios and it continues to amaze us, awesome! Here's an album of images and a writeup of the gun Heres the schematic for the tesla coil Ill be doing a build video of this in a few weeks due to popular demand!

Breaking into a massive 1000lb Safe with a Plasma Cutter7m37s

Breaking into a massive 1000lb Safe with a Plasma Cutter

Kevin Kohler, a.k.a. The Backyard Scientist, strikes again. His latest toy – a plasma cutter. Plasma cutting is a process that cuts through electrically conductive materials by means of an accelerated jet of hot plasma. Typical materials cut with a plasma torch include steel, stainless steel, aluminum, brass and copper, although other conductive metals may be cut as well. The machine uses air to push the plasma further through the material, resulting in a cut. As all good scientists go, Kevin starts by attempting to cut something that is non conductive, like a watermelon. The plasma only burns the rind from the outside and barely makes a hole. That wasn't a challenge enough for our Backyard Scientist, so next stop is to see what would happen if you ACCIDENTALLY burn yourself with the plasma gun. The plasma from the gun burns straight through a piece of steak, which means that you will probably need a big bandage in case you forget to put your gloves on. The this walls of the small apartment-size safe was no match for the plasma, so the real challenger comes from a jeweler's safe, weighing at almost 1000lb! The plasma cuts through the thick back wall in about 10 minutes, leaving the concrete padding to be crushed and the insides revealed. Unfortunately for Kevin, the previous owner emptied the entire vault, leaving only one copper penny from the 70s. What ever the booty was, this was one entertaining video!

Turn an old Oven into a Kiln7m47s

Turn an old Oven into a Kiln

Hey everybody, I’ve been busy the past two weeks! I had a great time at Playlist Live, and finished some much needed organization in my garage. I finally got around to building a large kiln to help me make investment molds for aluminum casting. Now I can finally get this laser gun built! Shoutout to Keystone Science! I couldn't find any info on any projects like this, so I thought I would have a try myself. I thought an oven would be the perfect platform, it already has a door, space for insulation, and comes with heating elements! The oven was almost exactly $270 to build, which is about $200 cheaper than a used kiln on craigslist. and 1/10 the cost of a new kiln. I could only get it to 820c - 1500f, Real kilns can get to 2300f. I think my kiln could get that hot if I wound my own heating elements with nichrome wire and added another layer of insulation. Oven - 40 Morter - 25 Ceramic Blanket - 120 Firebrick - 40 Temp control - 30 Everything else - 20 Materials: Insulating firebrick - GREENTHERM 26 LI High Temperature mortar - GREENPATCH-421 Cheaper mortar - Bio-Soluble Ceramic Blanket - Color temp changing lightbulb -

How (Not) To Make A Rocket Powered Fidget Spinner4m45s

How (Not) To Make A Rocket Powered Fidget Spinner

In the crazy era of fidget spinners, TheBackyardScientist made a giant rocket-powered fidget spinner, so you won’t have to! Kevin Kohler a.k.a. TheBackyardScientist gives his own spin to the fidget spinner craze by custom building a giant fidget spinner out of metal and gave it an extra feature. The crazy backyard scientist added rockets to each of the fidget’s lobes, thus making it the ultra fidget spinner! He assembles his creation on a tripod and sets up a makeshift blast barrier, just in case. His girlfriend is already there, waiting to see what will happen. This video shows just why every one of these videos comes with a disclaimer “do not try this at home”. Just when the spinner reaches speeds of over 5.000 rpm, two of the rockets break free, shooting shrapnel all over the scientist’s backyard, almost hitting his girlfriend and definitely hitting his car! In case you were wondering what caused the dysfunction, physics has a simple answer to it - centrifugal force! The spinner was going so fast, that the gunpowder inside the rocket “engines” was being forced out the back and to the sides of the rockets, causing a magnificent shower of sparks! So there you have it. You can make a self-propelled fidget spinner, but it is not without consequences. Definitely don’t try this at home!

Guy Creates Huge Mouse Trap, And The Result Is Unbelievable6m19s

Guy Creates Huge Mouse Trap, And The Result Is Unbelievable

Everyone and their grandma has had a pest problem at least once in their life. There are an abundance of ways to get rid of or prevent the appearance of pests in your home. But have you ever wondered what a scientist would do if he got himself in the same situation? In this new video, Kevin Kohler, a.k.a. The Backyard Scientist shows off his latest invention -- a giant mousetrap that obliterates anything that crosses its path. "I've got a bit of a raccoon problem at my house, so I built something to fix the problem," the Backyard Scientist wrote on his YouTube page. "It breaks multiple local ordinances and a few international treaties, but I give you the giant mousetrap." The trap took three weeks to build and cost around $360 to make from supplies like wood planks, car suspension system coils and steel square tubing. The main expenses are the winch and the multiple pipe fittings to adapt the springs to the bar. After many attempts using garage door springs and then coil springs, he finally got it right. For those worried this video is an animal snuff film, don't fret. The Backyard Scientist only destroys objects without a pulse. It's oddly satisfying to watch him use the giant trap to smash a watermelon, coconuts, a fiery model volcano, a mannequin head wearing a hard hat and more.

Bart Simpson Megaphone Challenge!7m12s

Bart Simpson Megaphone Challenge!

Thanks 23andme for sponsoring my video :) Get your own kit at Ive always wondered what would happen if you lined up 10 megaphones in a row and yell into them, today I put that idea to the test! That literal feedback loop was crazy loud! Crash Zone - https://www.yout

Enthiusiastic Scientist Dude Plays With Terminator Metal3m22s

Enthiusiastic Scientist Dude Plays With Terminator Metal

After seeing a GIF online from a guy squirting molten gallium into a pool of what looked like water in a shallow dish, Kevin Kohler wanted to try it out for himself. In the GIF, they would squirt the liquid metal from a syringe and it would form tiny spheres that after a little bouncing all over the place, would gather back together into one big ball. Kevin tried it at home, but the gallium would just form a blob in the dish, not doing much. After finding the original video, it turned out that the colorless liquid in the dish was actually sulfuric acid instead of just plain H2O. What is going on is, normally gallium has a very low surface tension, but when you add it to sulfuric acid, a thin skin of gallium sulfate is formed on the surface of the metal, which has a much higher surface tension that the pure metal. That higher surface tension is what pulls the metal back into a sphere. Gallium isn't the only liquid metal plaything that the Backyard Scientist has used in his career. Kevin once tried to do the bottle flip challenge, but instead of filling a bottle with water, he filled it with mercury, making it a mercury bottle flip challenge. Do not try that it home! Original Video inspiration -

What Happens When You Put 20,000 Volts Into A Watermelon6m08s

What Happens When You Put 20,000 Volts Into A Watermelon

Ever wondered what would happen when you pump 20,000 joules into a watermelon? Two words. Pink and mist. Kevin Kohler, who also goes by the moniker The Backyard Scientist, has saved us all from spending huge amounts of money on capacitors and throwing away precious summer food by gathering three of his whacky engineering friends to show us exactly what high voltage electricity does to a watermelon. After trying to blow up a watermelon with a smaller capacitor holding about a 1000 joules of energy, Kevin’s friend and electrical engineer Coyt brought over 4 capacitors rated at 20 kilovolts and 25 microfarads each. They came from a lab that used to them to simulate the effects of lightning on materials, so basically, this is like an extension of their experiments. Unlike a battery, which stores power, a capacitor is able to unload all of it’s “juice” in a fraction of a second. A small one has the potential to stop your heart, but when it is as big as the one Coyt brought, it will literally blow you to bits, just like that juicy watermelon. Thank goodness The Backyard Scientist is more concerned about blowing stuff up, than he is about the advancements in science.

Learn How To Extinguish A Magnesium Fire4m50s

Learn How To Extinguish A Magnesium Fire

Magnesium is a pretty cool thing. It's the ninth most abundant element in the universe and fourth most common on our planet. The coolest thing about magnesium is that it can be used as an emergency fire starter because it has a low melting point. A magnesium fire burns bright and it's virtually inextinguishable, so don't try this next experiment at home! Chemistry is a fun subject, but you need to take a lot of precautions. The Backyard Scientist will take that burden off your shoulders by showing you how magnesium ignites, how bright magnesium fire is and how to extinguish it. He tries covering the fire with dry ice, which is basically frozen CO2, but the fire takes it's sweet time to go out, since magnesium fire draws the oxygen from the CO2. Don't try to put it out with water either! It will cause an explosion that looks really cool in slow-mo, but it may cause additional damage. The best way to put out a magnesium fire is to cover it in sand, in order to smother the fire by removing its O2 source! Are you a science junkie? Share this video with your friends to educate them on the effects and dangers of a magnesium fire.

150 mph Rocket Knife7m51s

150 mph Rocket Knife

I recreated my favorite MythBusters experiment and tried to chop a car in half with a Rocket Knife. I also tried to chop a chicken, steak, and fruits in half! Next week.. RED HOT ROCKET KNIFE! ...after my burns heal ;) I can't recommend Williams channel enough! -

1000 degree Red Hot Rocket Knife6m29s

1000 degree Red Hot Rocket Knife

You knew it was coming! Back at it agin with the Rocket Knife, but this time im going full sellout ;) 1000 degree, 150mph knife vs Coke, Silly-String, Bread, Wood, Bricks, and Lighters! You all gave me so many good ideas last week, I had to try some more. The rocket track is going on the shelf for

Deadly stink gas from Etch-A-Sketch?? (Hydrogen Sulfide!)8m01s

Deadly stink gas from Etch-A-Sketch?? (Hydrogen Sulfide!)

Today I teach you how to make Aluminum Sulfide, a chemical that releases Hydrogen Sulfide on contact with water. Its one of the smelliest compounds in the world, and you can make it with an Etch-A-Sketch and Sulfur! Plus you get to set stuff on fire to make it, aww yeah! I burned 100mmol (15g) of

iPhone in Molten Aluminum4m41s

iPhone in Molten Aluminum

Pick-a-Phone Giveaway: Brandon's Video On Brandon's channel, he runs a lot of "creative durability tests", a.k.a. destroying iPhones in cool ways. In this video, watch as an iPhone is truly destroyed for good in Terminator 2 style, in a vat of molten metal. The metal is so hot that it looks like lava. Check out the insane transformation the iPhone goes through! In yet another of his epic adventures with molten aluminium, Brandon and his guest take us on a journey of destroying an iPhone in a matter of seconds. If you thought nothing beats this monster gadget, see what happens near the end of this video. Molten aluminium oxide near the melting temperature is roughly 2/3 tetrahedral (i.e. 2/3 of the Al are surrounded by 4 oxygen neighbors), and 1/3 5-coordinated, very little (<5%) octahedral Al-O is present. Around 80% of the oxygen atoms are shared among three or more Al-O polyhedra, and the majority of inter-polyhedral connections are corner-sharing, with the remaining 10–20% being edge-sharing. The breakdown of octahedra upon melting is accompanied by a relatively large volume increase (~20%), the density of the liquid close to its melting point is 2.93 g/cm3. We're dying to know if the phone was good for use! Do not try this at home. Facebook: Instagram: Twitter: Website:

Red Hot Cannonball Vs Styrofoam Tower5m49s

Red Hot Cannonball Vs Styrofoam Tower

Thanks to Casper for partnering with me! Go to and use code backyard for $50 towards any mattress purchase! My girlfriend's channel - SandraSays Facebook:

Pop Champagne with SCIENCE6m01s

Pop Champagne with SCIENCE

Science is a cool subject to explore, but some of the experiments just aren't safe to do at your own home. That is why the Internet is filled with videos of both professionals and enthusiasts pushing the boundaries of safety as they demonstrate various science experiments, so you don't have to! Cue Kevin Kohler a.k.a. TheBackyardScientist! What would we do if it weren't for him? The guy has shown us how magnesium burns and whether you can put it out, he has even got on the fidget spinner craze train and showed us what a rocket powered fidget spinner looks like. These experiments of his were quite dangerous, so it is better to just open TheBackyardScientist channel here on and watch them from the safety of your own couch. This video is somewhat safer, though it might hit you on the pocketbook pretty hard. Kevin uses an ultrasonic cleaning device to see how various fizzy drinks will react, in comparison to, say the Coke and Mentos experiment. The ultrasonic cleaner creates bubbles through a process called cavitation, and the bubbles together with the mechanical vibrations in the water lift the dirt from the objects immersed, thus cleaning them. In fizzy fluids, however, it causes the CO2 to release quicker than normal, which in turn creates the canon effect. After a few tries with the open soda bottles, the time came for Kevin to test how the ultrasonic cleaner will open a bottle of champagne. Looks like the bottle was sitting in the heat of the sun for too long, so the first one didn't even get to be submerged in the cleaner. The second one almost got in the water, but the third one endured for nearly half a second, before popping the cork with incredible speed and bursting the delicious contents of the bottle up in the air. Chronos Kickstarter - Davids 'will it mow' channel Davids main channel - Lindsay Wilsons Channel - He has some really cool stuff!!

How To Build DIY Multicolor Fire Tornado With No Moving Parts 4m26s

How To Build DIY Multicolor Fire Tornado With No Moving Parts

There is nothing more satisfying than knowing that you can build something with your own two hands. Kevin Kohler “The Backyard Scientist" demonstrates how to build a simple DIY multicolor fire tornado with no moving parts. The Backyard Scientist is back with a new trick up his sleeve, and this one never gets old! This homemade multicolor fire tornado spins around and weaves itself together with absolutely no moving parts. All you need to do is cut up a glass cylinder and then offset the half-cylinders a little bit to let air flow do its thing to create the fire vortex. The design uses split glass tubes that create convection currents around the fire and various fuel sources that burn with different colored flames. No moving parts, no fans, no squeaky bearings, just fire and forget! Watch as the Backyard Scientist messes around and burns different chemicals, like methanol, lithium, and boric acid, in order to showcase the different colors, like bright red and green, that can be found in a fire tornado. This amazing guy will take you on a magical journey and show you that anything is possible, you just need to have a little patience, talent and knowledge and mix it all together. He will take you down the road, step-by-step, slowly explaining his every move, and eventually he will show you a very neat way to build your own fire tornado! Inspire to Make - Meteorite Ring

Mercury Bottle Flip4m43s

Mercury Bottle Flip

Cody's lab also did a mercury water bottle flipping video, it's super cool check it out here! tesla500 - Destruction Channel - Website - Instagram - http

How to Make an Aluminum Foundry - Backyard Scientist3m55s

How to Make an Aluminum Foundry - Backyard Scientist

It was about time To make this video! p.s. Im going to blow up a pumpkin tomorrow :) Jace & Luke - My neighbors YouTube channel Website - Instagram -