There are countless stars that we can see in our night sky, and all of them are unique. Some are dim, barely visible without a telescope. Others are bright and can be seen even in the most light-polluted areas. We measure the brightness of these stars using the magnitude scale. The magnitude scale seems a
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CAUTION! Do not try this at home. This experiment uses liquid nitrogen which is EXTREMELY cold. Safety precautions were taken in the filming of this video. Many know that liquid nitrogen is extremely cold, at -321ºF. When it is exposed to extreme temperature differences, you can observe something called the Leidenfrost Effect. To learn more
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