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Note: This video is designed to help the teacher better understand the lesson and is NOT intended to be shown to students. It includes observations and conclusions that students are meant to make on ...

Physicists have long relied on the idea that electrons behave like tiny particles zipping through materials, even though ...

However, due to its fragility, aerogel has played a vital role in space exploration. Aerogels are 99.8 per cent air. They are ...