Enquiring minds constantly ask what-, how- and why-questions about things that happen around us. However, in physics, we tend to skip the why part. We're often satisfy by limiting ourselves to what happened, and how it happened. We're happy with…
Earth days vary ever so slightly in length form one day to another. The irregularity is so tiny that it was not discovered before the advent of super-precise atomic clocks. We're talking fractions of a millisecond per 24 hours. All sorts…
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