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how many times dos the earth rotate every day?

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basbr
1234472.  Mon Apr 17, 2017 1:33 pm Reply with quote

fingers on buzzers everyone.
how many times does the earth rotate every day?
.
.
.
if you said once you deserve a alarm,
the answer is 1+1/365, every day the earth needs to rotate a little further to account for the rotation around the sun. if you divine a day as one earth rotation then daytime and nighttime would swap every half a year.

 
paultaylor12
1238315.  Mon May 29, 2017 6:36 am Reply with quote

The Earth rotates once in about 24 hours with respect to the sun and once every 23 hours, 56 minutes and 4 seconds with respect to the stars (see below). Earth's rotation is slowing slightly with time; thus, a day was shorter in the past.

 
Spud McLaren
1238319.  Mon May 29, 2017 7:37 am Reply with quote

paultaylor12 wrote:
Earth's rotation is slowing slightly with time; thus, a day was shorter in the past.
I knew it! The bastards are making us work longer!

 
heimerdinger
1238783.  Sun Jun 04, 2017 11:19 pm Reply with quote

basbr wrote:
fingers on buzzers everyone.
how many times does the earth rotate every day?
.
.
.
if you said once you deserve a alarm,
the answer is 1+1/365, every day the earth needs to rotate a little further to account for the rotation around the sun. if you divine a day as one earth rotation then daytime and nighttime would swap every half a year.


That's why each 4 years we had one plus day on February right xD

 
Snowywebb
1288017.  Mon Jun 25, 2018 9:05 pm Reply with quote

If we, as stated by cosmologists studying the expansion of the Universe since the Big Bang, are at the centre of the Universe, then surely the Earth must be stationary and everything else rotating around it!

 
crissdee
1288031.  Tue Jun 26, 2018 3:18 am Reply with quote

Iirc, there is no "centre" of the universe. It is all expanding, at the same rate, all over, and as we don't know where the edges are (or even if it has any edges) we cannot possible define a "centre".

 
Snowywebb
1288059.  Tue Jun 26, 2018 6:49 am Reply with quote

crissdee wrote:
Iirc, there is no "centre" of the universe. It is all expanding, at the same rate, all over, and as we don't know where the edges are (or even if it has any edges) we cannot possible define a "centre".


Therefore the Earth could be the centre... we really donít know....

 

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