Why in sports does the home team wear white while the visitors wear darker colours?

Early television was in black and white and the definitions weren’t nearly as precise as they are today. When the Canadian Broadcasting Corporation was testing for live hockey broadcasts in 1952, they found that if both teams wore their traditional colours, it was impossible to tell them apart. They solved the problem by having the home team wear white, while the visitors stayed in their darker uniforms.

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Why do we say “We’re just gonna hang out”?

“Hanging out” usually means getting together for no particular reason other than to pass time and see what’s happening. The expression comes from a time before commercial signs, when English shopkeepers set up poles in front of their stores from which they would hang flags describing their goods. These flags were called hangouts, and they became a place where people would stop to linger and gossip with their friends.

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What is the difference between an alligator and a crocodile?

Alligators are slightly larger and more bulky than crocodiles. A wild alligator can reach up to 13 feet (3.9 meters) in length, and weigh up to 600 pounds (272 kilograms). Besides the two animals’ size difference, the easiest way to tell them apart is by their snout. A crocodile has a very long, narrow, V-shaped snout, while the alligator has a wider, U-shaped snout. The alligator’s wide snout delivers more crushing power to eat prey like turtles, which make up a large part of the animal’s diet. The crocodile’s upper and lower jaws are nearly the same width, so its teeth are exposed all along the jaw line in an interlocking pattern, even when its mouth is closed. An alligator, on the other hand, has a wider upper jaw, so when its mouth is closed the teeth in the lower jaw fit into sockets of the upper jaw, hidden from view. South Florida is the only known place in the world where crocodiles and alligators live together in the same area.

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What Polygraph instrument does?

Instrument that simultaneously records changes in physiological processes such as heartbeat, blood pressure and respiration used as a lie detector

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When wood burns it crackles. Explain?

Wood contains a complex mixture of gases and tar forming vapors trapped under its surface. These gases and tar vapors escape, making a cracking sound.

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