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A Brief History Of Measurements

How long does a second last? Who determined the length of a meter and the weight of a Kilo? How were the units that we use to measure weight and distances determined?

calendar 24.2.2025
reading-time 6 minutes

The Periodic Table’s Precious Metals

Beyond gold: Some metals cost tens of thousands of dollars per kilogram, and radioactive elements fetch even more.

calendar 1.4.2020
reading-time 10 minutes