In the Middle of the Night
A man wakes up at night in the pitch dark. He knows that on his bedside table are a razor, a watch, and a glass of water. How can he reach for the table and be sure to...
Read MoreA man wakes up at night in the pitch dark. He knows that on his bedside table are a razor, a watch, and a glass of water. How can he reach for the table and be sure to...
Read MoreWhy Star Is Called a Body of Luminous Gas? A star is a body of luminous gas, like the sun. But as the stars are much farther away from the earth than the sun, they...
Read MoreWhat Makes a Glowworm Glow? A glowworm uses its glow to attract food and to burn off its waste. Its tail glows because of bio luminescence, which is a reaction between...
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