Weight. WHAT!?! The kilogram has changed

[underpants]

Out with the old kilogram, in with the new -- scientists introduce more accurate measure

The new definition is based on the Planck constant -- a physical constant observed in the natural world -- rather than the precise weight of a piece of metal kept under lock and key.

For more than 100 years Paris has been home to Le Grand K -- or the International Prototype Kilogram, as it is officially known -- a block of metal that previously defined the weight of a kilogram.

The reason for the change to the International System of Measurement (SI) units was that over time the prototype lost atoms and therefore mass because it is "susceptible to damage and environmental factors," according to the National Physical Laboratory (NPL), which houses Kilo 18, Britain's copy of Le Grand K.

Le Grand K was compared with the various copies only once every 40 years, which made the calibration potentially inaccurate. Though the change in mass is roughly equivalent to the weight of an eyelash, the repercussions could be severe.

https://www.cnn.com/2019/05/20/world/new-kilogram-introduced-scli-intl-scn/index.html

[Solly Mack]

1. So my jeans have shrunk in the wash?

[tymorial]

2. I too have experienced shrinking clothes

You know it's funny, it always happens around the same time the batteries start failing on my scale and it provides a faulty reading. Weird coincidence that

[Solly Mack]

3. You let the enemy of the tasty into your home?

For shame!

Fight the power! (remove the batteries)

[tymorial]

11. I wish. I lost 80 pounds about 6 years ago and this past year I have gained 20

I swore that I would never get back to where I was. I am so mad at myself.

[Solly Mack]

15. Stop beating yourself up. That never helps. Becomes self-defeating.

Easier said than done, I know.

We can't change what we're not aware of - so you're halfway there already. You're aware.

Helps me anyway.

[underpants]

9. It's not the washer or dryer

It’s the fridge

The enemy of the tasty

[Solly Mack]

10. Oh I can't blame the fridge. It's always running.

[3Hotdogs]

4. I was always told that the French hated Americans, but this is too much.

[DetlefK]

6. Calm down. Nobody is coming for the pound.

[pansypoo53219]

5. this is why metrics is whooie. NPR had a good t ing on that tube. its BS i say.

[DetlefK]

7. Exactly. We should measure gas by how much liquid goes into a cow-skin.

[pansypoo53219]

17. only if it holds a gallon.

[zipplewrath]

8. The pound is a pound

A pound is still a pound world round.

[muriel_volestrangler]

16. For over 120 years, the pound has been defined in terms of the kilogram

and in 3 different ways in the US:

In the United States, the avoirdupois pound as a unit of mass has been officially defined in terms of the kilogram since the Mendenhall Order of 1893. That Order defined the pound to be 2.20462 pounds to a kilogram. The following year, this relationship was refined as 2.20462234 pounds to a kilogram, following a determination of the British pound.[21]

In 1959, the United States National Bureau of Standards redefined the pound (avoirdupois) to be exactly equal to 0.453 592 37 kilograms, which had been designated as the International Pound. According to a 1959 NIST publication, the United States 1894 pound differed from the international pound by approximately one part in 10 million.[1] The difference is so insignificant that it can be ignored for almost all practical purposes

https://en.wikipedia.org/wiki/Pound_%28mass%29#In_the_United_States

[Johonny]

12. Now I need to call metrology

[underpants]

13. I'd go with Greg not Steven

http://www.nacma.info/About/default.html

[hunter]

14. A Kibble Balance would look great in my mad scientist lair.

https://en.wikipedia.org/wiki/Kibble_balance

[rsneha]

18. Weight Converter

Convert weight units Kilograms
Weight Converter