Dne 21/02/2016 v 03:21 Peter Riedt napsal(a):



I posted on 17/2/16 in sci.physics:
'Science has not grasped the significance of Kepler's third'.

That is false.

Sam Wormley replied:
"Kepler's third law (from the early 1600s) gave us the relative sizes of the orbits, T^2 ~ a^3.

That is true.

Isaac Newton's version of Kepler's third law T^2 = (2π)^2 a^3 / G(M+m)
where (2π)^2/G is just a constant of proportionality.

That is true.


Orbits of earth and solar system satellites today are described by their Keplerian Elements.

I would not call them Keplerian.

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

Science not only grasped the significance of Kepler's third law,
but makes use of it 24/7".

That is true.

Both Sam and Herr Spitzohr make sense, you do not.



--
Poutnik ( the Czech word for a wanderer )

Knowledge makes great men humble, but small men arrogant.