Here's how you can model the use of X rays for medical examinations with some sand and a piece of screen.
Learn how to use physics to distinguish between raw eggs and hard-cooked eggs.
Make yourself giant or tiny with a snip of the scissors.
Hear audio clips of the ambient sounds of the rain forest at night near Arecibo, Puerto Rico.
Your thumb and index finger can help you test a steak's degree of doneness.
Your brain is always looking for blank spaces and filling them in. Sometimes, your brain leaps to the wrong conclusion. Then you get a surprise!
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