Post #2883019

@tef@mastodon.social @alicemcalicepants@ohai.social 🤓 for me it is 16 November (next week) Because in 2018 scientists redefined the definition of kilogram, kelvin, mole, and ampere. Since then, all SI Units have been based on fundamental constants of nature and not physical artefacts, i.e. (Le Grand K), which they were previously based on. Derek Muller (veritasium) made a fascinating video about it https://youtu.be/c_e1wITe_ig