Recent content by Arkasha

Thanks, Edgardo. Very useful information, so I can shop around for larger sizes.

Hello, I want to show my class how tonic water will fluoresce under UV light. My UV sources are a couple of 12V UV bulbs, as designed to "pimp out" (don't ask) a PC. Here's the main problem: these also put out some visible wavelength, purplish light. I'd like filter this visible light...

A very peculiar magnetic effect (chemist yells "help!") Hello all, Today I was approached by a chemist who teaches A/P and honors physics at the high school. He showed me an experiment the class had been doing on transition metals. This was the setup: He placed a neodymium magnet on a...

Hello all, I was recently talking about the Seebeck effect with one of my colleagues, and we've run into a bit of a puzzle. Why are *dissimilar* metals required to produce it? All of the various sources I've consulted state very clearly there must be two different metals (or I suppose you...