Posts Tagged ‘laser’

Gummi bear explosion (and other experiments)

// March 16th, 2011 // 1 Comment » // Just for Fun

Enjoy what happens when a gummi bear is dropped into potassium chlorate.

Cool. Why did I never do this in chem class when potassium chlorate was available to me?

How does it work, I hear you ask? (And where can I get this stuff?) Potassium chlorate is KClO3, and contains one potassium, one chlorine and three oxygen. It comes as a solid salt, but can be melted by a Bunsen burner.

At high temperatures it decomposes to potassium chloride (KCl) and oxygen gas (O2). No bigger. Until the sacrificial gummi bear.

A gummi bear is full of sweet, delicious sucrose, a source of carbon and energy. Add it in and BAM! The trifectar – fuel, oxygen and heat – the ingredients for fire. The reaction is hugely exothermic, producing MORE heat which produces MORE oxygen which drives the gummi bear into complete annihilation.

For more gummi bear destruction try drowning them, stabbing them shortly after hatching, or decapitating them with a laser.

Curiously, it’s always the red gummi bear that gets it. That’s discrimination.

Laser Cut Cake, Delicious Technology

// May 10th, 2010 // Comments Off on Laser Cut Cake, Delicious Technology // Just for Fun

Science Cake

Image from Instructables

This cake was cut using a laser, as seen on Instructables. First a cake was baked (yum), and a design mapped out using a program called CAD. We used CAD in high school, but never to make cake. I believe that is what’s wrong with the education system.

CAD is a tricky (well, I found it hard) engineering program which works out angles and scales and junk to tell the laser where to cut to get your design. They had to do test cuts with the laser, because cake is a different material than the laser is used to.

Once it was cut, WITH A LASER, it was frosted and the layers were put together in an extremely geeky way. Delicious!

Take THAT not so humble pie! I’m kidding, I love you.

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