backyard scientist's posts - Ukrainian uPOST

Building a Molten Metal Squirt Gun Is the Worst Way to Stay Cool This Summer

Shortly after the Super Soaker was first released in 1990, it became surrounded with controversy about hooligans allegedly filling the toy with harmful chemicals. But if that sounds dangerous, just imagine how local news stations would freak out over a squirt gun that blasts molten liquid metal.

Keep Computer Duster Very Far From Boiling Water

Despite the name “canned air,” computer duster isn’t oxygen at all. It’s actually 1,1-Difluoroethane kept under pressure in its liquid form and released as a freezing cold gas. It can cause moderate frostbite. It can get you high if you huff it (but don’t do that—it’s a truly awful idea.) And it makes boiling water…

This Giant Fire-Breathing Vortex Cannon Is Literally Lit

Bigger is always better, but you can make anything even awesomer with the addition of fire. That’s what Kevin Kohler, the Backyard Scientist, did with one of those vortex air cannon toys. He not only built one ten times larger, he also uses it to blast rings of propane gas towards an open flame to create spectacular…

Liquid Metal Bullets Wreak Havoc on a Watermelon Liquid Metal Bullets Wreak Havoc on a Watermelon

Lead is a relatively soft metal, and the fact that it deforms on impact is what makes lead bullets so deadly. It expands inside whatever it hits causing more damage to the surrounding area. But there are metals much softer than lead, and their effects on contact are even more pronounced—so naturally someone made them…

Molten Salt Is a Fish Tank's Worst Enemy

Molten salt is, as its name suggests, salt in liquid form. It doesn’t get there until between 500 and 1,112 degrees Fahrenheit, making it one of the worst things you can drop into a glass vessel full of cold water.

Video: Making plasma by microwaving a grape is the coolest thing

The Backyard Scientist’s slow motion series is always fun because they’re just quick and easy experiments that show off cool tricks you can do at home (don’t do it at home). This time he makes plasma with a microwave oven transformer (which creates a super cool arc of plasma around the blue bolt of electricity) and…

A sword made of fire is the coolest thing

There are swords that are on fire, swords made in fire and now, swords that are made of fire. The Backyard Scientist created this “fire saber” which is basically a seltzer bottle that spits out a stream of butane which lights on fire with a lighter. The look of the fire stream resembles a light saber, hence the fire…

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