The kilogram is no longer defined as the mass of the Paris etalon. Now it’s defined so that Planck constant ℎ = 6.62607015 × 10⁻³⁴ kg m²/s, where 1 s is 9 192 631 770 oscillations of ¹³³Cs and 1 m is how long light travels in 1/299 792 458 s in vacuum.
yeah, because all y’all didn’t notice your precious kilogram EVAPORATED UNTIL 7 YEARS AGO HOW LAME
evaporating parisian units stands as long as the original kilogram did. so i guess y’all gotta live with the shame of “we can’t base our system of measurements off a Foot! That’s uncouth! it’s a body part! let’s base it off this evaporating hunk of metal!” until 2149.
The pound has been defined as 0.453 592 37 kg since 1959, having relied on the slightly evaporating Parisian etalon for 60 years. You have no moral high ground.
who said i care about moral high ground, Mx. I Belive In Evaporaton (look, you can’t even spell evaporation right. you really need to reprint those business cards)
The kilogram is no longer defined as the mass of the Paris etalon. Now it’s defined so that Planck constant ℎ = 6.62607015 × 10⁻³⁴ kg m²/s, where 1 s is 9 192 631 770 oscillations of ¹³³Cs and 1 m is how long light travels in 1/299 792 458 s in vacuum.
They’re the same thing.
Duh. Do you think they’d change the value significantly? But now it’s actually constant and changes to that piece of metal will change nothing.
yeah, because all y’all didn’t notice your precious kilogram EVAPORATED UNTIL 7 YEARS AGO HOW LAME
evaporating parisian units stands as long as the original kilogram did. so i guess y’all gotta live with the shame of “we can’t base our system of measurements off a Foot! That’s uncouth! it’s a body part! let’s base it off this evaporating hunk of metal!” until 2149.
The pound has been defined as 0.453 592 37 kg since 1959, having relied on the slightly evaporating Parisian etalon for 60 years. You have no moral high ground.
who said i care about moral high ground, Mx. I Belive In Evaporaton (look, you can’t even spell evaporation right. you really need to reprint those business cards)
So I looked it up and the mass change is actually positive, about 1 part per billion per year. Not evaporation but adsorption.
NOOOO now i’m going to have to reprint MY business cards i’m ruined