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Physics, Astronomy & Cosmology / Re: Has the distance between the sun & earth changed?
« on: 26/01/2022 01:06:07 »
Hi all
Ok Halc you make a lot of valid points, and as you have already stated not much to do with the original post, so I will probably start another post around the apparent change of opinion regarding energy's influence in the dynamic you were describing.
Halc : my bold
Changes to this in your following post,
Given you state the energy is supplied from the earths rotation and radiates out into space, you cannot dismiss/separate the relationship between rotational momentum and rotational kinetic energy of a body.
(energy is the currency of the physical world)
http://hyperphysics.phy-astr.gsu.edu/hbase/rke.html
Ok Halc you make a lot of valid points, and as you have already stated not much to do with the original post, so I will probably start another post around the apparent change of opinion regarding energy's influence in the dynamic you were describing.
Halc : my bold
Quote
1) Solar tides, driving Earth away from the sun, energy being supplied by spin of Earth.
Changes to this in your following post,
Quote
It isn't an energy thing. The vast majority (over 99%, about 97% for lunar tides) of the energy dissipates as heat. Its the angular momentum that counts since that cannot just be radiated into space,
Given you state the energy is supplied from the earths rotation and radiates out into space, you cannot dismiss/separate the relationship between rotational momentum and rotational kinetic energy of a body.
(energy is the currency of the physical world)
http://hyperphysics.phy-astr.gsu.edu/hbase/rke.html