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Chat Area => General Discussion Area => Topic started by: Banjax on 16 October 2008, 15:54:49

Title: Hourly(ish) Quiz Question 3
Post by: Banjax on 16 October 2008, 15:54:49
Exactly how long does it take the Earth to complete one full revolution? :y
Title: Re: Hourly(ish) Quiz Question 3
Post by: woodsy_mv6 on 16 October 2008, 16:02:41
What unit of time you want it in??
Title: Re: Hourly(ish) Quiz Question 3
Post by: DaveyDavey on 16 October 2008, 16:05:34
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Exactly how long does it take the Earth to revolve around the Sun?

Are you asking how long it takes the earth to make one full revolution?

Or how long it takes for one complete circuit around the sun?

 ::)
Title: Re: Hourly(ish) Quiz Question 3
Post by: Banjax on 16 October 2008, 16:06:27
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What unit of time you want it in??

to the nearest second  :y
Title: Re: Hourly(ish) Quiz Question 3
Post by: Banjax on 16 October 2008, 16:07:42
Quote
Quote
Exactly how long does it take the Earth to revolve around the Sun?

Are you asking how long it takes the earth to make one full revolution?

Or how long it takes for one complete circuit around the sun?

 ::)

good point - i mean how long does it take the EARTH to revolve, not how long it takes to orbit the sun  :o :o
Title: Re: Hourly(ish) Quiz Question 3
Post by: Martin_1962 on 16 October 2008, 16:11:34
Trick question as a day is just over 1 revolution.

Just looked it up

Quote
This interval is known as
a "siderial" day, which is 23 hours, 56 minutes, 4.06 seconds
Title: Re: Hourly(ish) Quiz Question 3
Post by: DaveyDavey on 16 October 2008, 16:15:14
I must confess to a quick trip to wikipedia just now to find out  :)
Title: Re: Hourly(ish) Quiz Question 3
Post by: Banjax on 16 October 2008, 17:12:06
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Trick question as a day is just over 1 revolution.

Just looked it up

Quote
This interval is known as
a "siderial" day, which is 23 hours, 56 minutes, 4.06 seconds


there are various answers - but essentially Martin - that is correct - the earth takes 23h 56m 4s to completely rotate  :y
Title: Re: Hourly(ish) Quiz Question 3
Post by: psychnurse on 16 October 2008, 17:13:30
But time is a social construct. So it takes as long as it takes  ;D
Title: Re: Hourly(ish) Quiz Question 3
Post by: Banjax on 16 October 2008, 17:31:02
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But time is a social construct. So it takes as long as it takes  ;D

actually a second takes 9192631770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the caesium 133 atom

as defined by the International System of Units



but no one likes a smartass ;D