The length of the day has not been constant throughout the Earth’s history. For the last 2,700 years, the length of a day has...
Stories from Physics
Archimedes is supposed to have said: ‘Give me a lever and a place to stand and I’ll move the Earth’. An estimate in a paper...
Many children love learning about space. It is a topic filled with awe and wonder. Yet even now the subject is rife with...
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