Originally Posted By: ImagingGeek
Why so I did. And in this case I have made a mistake - 10^24kJ is the impact energy.


ImagingGeek, why don't you just admit that your number of 10^27 joules is totally wrong.

Why don't you just admit it like a man and get on with life.

FIRST COMMENT:

YOU ARE OBVIOUSLY WRONG.

As has been pointed out to you before, a release of 10^24 kilojoules = 10^27 joules, for the proto-Earth-Theia collision is obviously wrong.

The amount of energy for each kilogram of Earth is;

= 10^27/(the mass of Earth)

= 10^27/(5.97369 x 10^24) = 167.4 joules.

So, how much will 167.4 joules of energy heat each kilogram?

Well, 1000 joules will heat one kilogram one degree centigrade (i.e., the specific heat for the Earth is 1000 Joules/kg°K)

So each kilogram is heated by the collision by 167.4/1000 = 0.1674 degrees.

So, ImagingGeek claims that the proto-Earth-Theia collision will raise the temperature of the entire Earth by ONLY 0.1674 of a degree. Which is obviously wrong.

SECOND COMMENT:

Your reference, the paper "Simulations of a late lunar-forming impact," does provides a figure for the energy and it is many orders of magnitude greater than 10^24 kJ.

Guess what it is?

So how come you couldn't find it? You didn't even try? Forget where it was?

No,... you just never knew where it was.

Now you know it is there, why don't you find it and report back.

Earth formed from a collision
www.preearth.net

Plate-tectonics is wrong
www.preearth.net/plate.html