black holes collision-Abell 400 galaxy-gravitational waves

Chipper Q
Chipper Q
Joined: 20 Feb 05
Posts: 1,540
Credit: 708,571
RAC: 0

RE: RE: How true; a

Message 27630 in response to message 27625

Quote:
Quote:
How true; a light bulb is the simplest analogy I can think of, and we rate them in Watts, a measure of power, the product of Voltage times Current. But the amount of light generated is what kind of units? I've confused myself; is this a bad analogy? What would be the astrophysical analogs of voltage and current? The wattage would be analogous to the total mass, right?

The output is Lumens. For the analogy, I don't see it yet, so I'm not sure if it is good or bad.

Mike Hewson- Look at the source, even if it is wrong in a technical sense, it is appropiate for the audience. Power by and large to that audience is what comes from that socket on the wall, energy is everything else. I'll withold any social commentary about this, and just say it probably was the best choice of words.


ghstwolf, if you could point me to a reference for the output of a Type Ia supernova that isn't rated in either joules or ergs, I'd be most grateful... :) I think the 'light curve' is where the power is...

Mike Hewson
Mike Hewson
Moderator
Joined: 1 Dec 05
Posts: 6,204
Credit: 134,916,771
RAC: 44,383

RE: ghstwolf, if you could

Message 27631 in response to message 27630

Quote:
ghstwolf, if you could point me to a reference for the output of a Type Ia supernova that isn't rated in either joules or ergs, I'd be most grateful... :) I think the 'light curve' is where the power is...


Well, you can add/summate power over a given time and get an energy value - ( differentiation being the reverse of integration if you like ). Like distance rate per time being velocity, and velocity summed over time being distance travelled.
Anyhows supernovae really do look very bright in comparison to their host galaxies ( which is useful for type 1a's as standard candles ) - but not for very long.
Cheers, Mike.

I have made this letter longer than usual because I lack the time to make it shorter. Blaise Pascal

Comment viewing options

Select your preferred way to display the comments and click "Save settings" to activate your changes.