4 ms·
I thought kilogram was the only one that hasn't been redefined. Then I checked that and actually it is now defined by speed of light and Planck constant
by charlieyu1 3y ago
I thought kilogram was the only one that hasn't been redefined. Then I checked that and actually it is now defined by speed of light and Planck constant
- johndunne 3y agoThe history behind the quest to define the kg is fascinating. When you consider how far science (and industry) has progressed where we can define with such ludicrous precision enabling experiments like LIGO and JWST, it leaves me thankful to be at this point in humanity's journey. Though, I still wonder what I'll be missing out on in another 100 years :D
- scottapotamas 3y agoLISA (Laser Interferometer Space Antenna) is worth reading into if you don’t know about it already.
- hanniabu 3y agoDoes this mean the cherished perfect 1kg samples aren't so important anymore because we should be able to reproduce a kg from scratch?
- cmehdy 3y agoThe kg template had lost mass by the time this all happened: https://news.sky.com/story/scientists-redefine-kilogram-as-original-measure-loses-mass-11552690 https://news.sky.com/story/scientists-redefine-kilogram-as-o...
- jimmySixDOF 3y agoand ironically for this conversation, the new definition of kg ends with a ....."per second" /s