Sandwich Bag Fire Starter

Sandwich Bag Fire Starter

Grant Thompson – the King of Random – teaches me how to start a fire with a Sandwich bag. And we tried to melt glass in my backyard: https://goo.gl/zb0uE0 Check out his channel: http://ve42.co/KoR The intensity of sunlight on Earth is about 1300 Watts per...
Using Parallax: How Far is that Star?

Using Parallax: How Far is that Star?

Introduction Since the distances to the stars cannot be measured directly, astronomers use a variety of techniques including triangulation and parallax, comparison of absolute and apparent magnitude, and Cepheid variables. Triangulation is an indirect method of...
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