福天使・ヨゥファン shares
Veritasium - Kilogram, Mole, Kelvin, And Ampere Will Be Redefined By Physical Constants.
The kg is dead, long live the kgInteresting. How to calculate 1 kilogram.
Also, his beard is cool.
The kg is dead, long live the kgInteresting. How to calculate 1 kilogram.
Also, his beard is cool.