Fire Retardant Gels
Ultra-absorbent diapers, the kind that will hold massive amounts of liquids, have been used for years, without a second thought given to the materials within them. Let's face it; those materials aren't very interesting: a bit of thin plastic sheet, some…
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Physics
Galileo Thermometers
Every substance has the property of 'mass', which is the basic physical presence of matter. Matter occupies…
Astronomy
The Brave and Cold Ulysses
Deep space is cold. Very cold. That's a problem--especially if you're flying in an old spaceship. And your…
Physics
Fission and Fusion
In the nuclear fission process, a heavy atomic nucleus spontaneously splits apart, releasing energy and an…
Physics
Quarks
Quarks are the most fundamental particles that we know of. Both protons and neutrons are made of quarks. We…