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What am I?

I love to dance and twist and prance, I shake my tail, as away I sail, wingless I fly into the sky. What am I?

Correct answers: 63

The first user who solved this task is Roxana zavari.

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Reading Is Fun

A mother walks into her own bedroom and is surprised to catch her 10 year old daughter reading her diary. Startled, she just stands there.
"You were right mom," says the daughter. "Reading is fun."

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Edison carbon filament experiment

In 1879, Edison's long series of experiments testing materials for suitability as an electric light filament reached a turning point. Charles Batchelor, working at Edison’s Menlo Park laboratory, produced illumination for 14½ hours from a lamp using a carbonized cotton thread. It failed when extra power was added. However, this was such a substantial improvement, attention turned to improving the carbonized filament. Patents were filed, and within two months the progress with the Edison light bulb was made public. An article was published on 21 Dec by the New York Herald. By then, the Menlo Park laboratory was continuously illuminated by Edison's incandescent light bulbs.«

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