Recent content by Erkenbrand

Awesome. I'll look it up. Is it... hard to find -- Lithium Niobate, I mean (the substance)?

Thanks, Claude. Yeah, I was actually thinking of lesser voltages (not even 10V!). But I'll research electro-optic and thermo-optic materials.

Thanks guys!

Well, once again, I ask something about index of refraction. What is the substance that suffers the greatest change in density when heated/cooled (so that by heating it up only a few degrees its index of refraction will change, even if just by a tiny bit)?

Hmmm. Apparently what happens when you pass a current through an LCD, the crystals "untwist" and align at 90° angles. Therefore it is binary (no partial rotation). Am I correct? If so, then is there anything that can function similarly to an LCD, but rotate at different angles depending on the...

Alright, thanks. That's a start ;)

Thanks guys. Water doesn't really work for me. Now, I'm interested in LCDs. I understand they have the property of birefringence, and electric currents change the alignment of the crystal. Now, is this binary (two possible states) or can you get the crystals to arrange in a gamut of ways...

Hey. What exactly does polarization of light mean? I researched "optically active materials" and I found that they work by rotating the polarization of light. What practical meaning does this have? Thanks!

Hi guys. I'm doing this science fair project and I needed to know if there is a substance (any substance!) whose index of refraction can be changed/regulated by applying an electric current (or any other action) to it. I appreciate all help. Thanks!