[LEAPSECS] Look Before You Leap – The Coming Leap Second and AWS | Hacker News

Poul-Henning Kamp phk at phk.freebsd.dk
Wed May 20 01:51:51 EDT 2015

In message <32C69001-DB69-46C4-905F-D994B017B17F at tcs.wap.org>, "Jonathan E. Hardis" writes:

>That box of Wheaties that is labelled 'Net Weight 10 oz' would 
>correctly weigh 10 oz everywhere on Earth, on the Moon, and on the ISS.  

It does not.

For several reasons, but mainly because the enclosed air changes
means that the bouyancy depends on air-pressure and thus altitude.

That goes for anything which isn't enclosed by a rigid container
with neglible elasticity in the range of relevant air-pressures.

Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk at FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.

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