CHALK TALK: LIQUID CRYSTALS

submitted by: nsf

Liquid crystals are a kind of matter that exists somewhere between a liquid and a solid. We can control the order of the liquid crystals used in liquid crystal displays with electricity. Think of it like a valve for light. We can open and close the valve by changing the alignment of the liquid crystals using electrical fields.

Learn about the Sun ...with Poetry!

submitted by: TheSchoolOrg
http://www.the-school.org/ Little films for a big planet. ----------------------------------------------------------------- Twinkle twinkle, little star, 93 million miles far. Giver of light, supporter of life, energy, climate and season device. The sun is a star, we're glad it is here, as our life support, for 5 billion years. This star is among the brightest in space, though close, many questions about it remain. With violet ,orange, and reddish of hues, our home solar...

Bouncing Raisins

submitted by: Tatyana.M.Ray

Science Experience, watch our kids experience with carbonation

Science is Awesome -Stoichiometry and Gas Laws - WGHS

submitted by: roflchopter11

The combustion of a compressed propane and air mixture is used to demonstrate the power of science by propelling a hardened steel dart through many phone-books - and nearly thorough a 1/2" thick steel plate.

Audio: Intermezzo, First Suite in Eb for Military Band by Gustav Holst

A method for reduction of anesthetic waste gases produced by rodent induction chambers

submitted by: jhlvt

Reducing waste gas exposure produced by induction chambers

SDSU Geological Sciences Webinar - Stephen T. Hasiotis

submitted by: tcarrasc
Ichnology for the 21st Century: Understanding the differences between continental and marine trace fossils, with implications to the diversity, distribution, and evolution of soil biota ; Department of Geological Sciences, San Diego State University, Seminar Series ; The study of ichnology has come a long way since its inception and it continues to evolve. In particular, progress is being made in understanding the implications of trace fossils in the continental realm and how they can be...