Cancer Posted October 31, 2013 Report Share Posted October 31, 2013 Not exactly. Meanwhile, now I sag in fatigue after the 100-minute Math Meth lecture, before the two-hour Solar System Astronomy lab. That latter is nowhere near as interesting as one might hope from the name; no dropping 10-kilometer asteroids onto planets. Not in the budget, sorry. Quote Link to comment Share on other sites More sharing options...
L. Marcus Posted October 31, 2013 Report Share Posted October 31, 2013 ... Sucky budget. :grumble: Quote Link to comment Share on other sites More sharing options...
Cancer Posted October 31, 2013 Report Share Posted October 31, 2013 Yeah, we don't get to go on field trips either. Quote Link to comment Share on other sites More sharing options...
L. Marcus Posted October 31, 2013 Report Share Posted October 31, 2013 Ooo, astronomy field trip! Where would you go? Quote Link to comment Share on other sites More sharing options...
Cancer Posted November 1, 2013 Report Share Posted November 1, 2013 Hmm. I'd have to decide whether it was inside the Solar System or otherwise, and how much I had to worry about survival. Quote Link to comment Share on other sites More sharing options...
L. Marcus Posted November 1, 2013 Report Share Posted November 1, 2013 Let's say survival is trivial. I'd see the Core Of The Galaxy! Quote Link to comment Share on other sites More sharing options...
Bazza Posted November 1, 2013 Report Share Posted November 1, 2013 The big bad black hole? Or the central sun? Quote Link to comment Share on other sites More sharing options...
L. Marcus Posted November 1, 2013 Report Share Posted November 1, 2013 ... There are several stars there. And Sagittarius A*. Quote Link to comment Share on other sites More sharing options...
Cancer Posted November 1, 2013 Report Share Posted November 1, 2013 It's a fine place to play Event Horizon Limbo. How low can you go and not fall down de ho'? Quote Link to comment Share on other sites More sharing options...
L. Marcus Posted November 1, 2013 Report Share Posted November 1, 2013 Not that low. Sag-A* is, what, a million solar masses? Quote Link to comment Share on other sites More sharing options...
Cancer Posted November 2, 2013 Report Share Posted November 2, 2013 The number I recall is 4 million solar masses. Quote Link to comment Share on other sites More sharing options...
L. Marcus Posted November 2, 2013 Report Share Posted November 2, 2013 ... Heavy. Quote Link to comment Share on other sites More sharing options...
Bazza Posted November 2, 2013 Report Share Posted November 2, 2013 nah, that is light. Quote Link to comment Share on other sites More sharing options...
Cancer Posted November 2, 2013 Report Share Posted November 2, 2013 It is, as galactic-center black holes go. Quote Link to comment Share on other sites More sharing options...
Bazza Posted November 2, 2013 Report Share Posted November 2, 2013 I was thinking not weight, but photons. Quote Link to comment Share on other sites More sharing options...
L. Marcus Posted November 2, 2013 Report Share Posted November 2, 2013 Nah, pure mass. Quote Link to comment Share on other sites More sharing options...
Bazza Posted November 2, 2013 Report Share Posted November 2, 2013 well photons have mass, right? Quote Link to comment Share on other sites More sharing options...
L. Marcus Posted November 2, 2013 Report Share Posted November 2, 2013 Yes, but mass =/= photons. Quote Link to comment Share on other sites More sharing options...
Bazza Posted November 3, 2013 Report Share Posted November 3, 2013 mas is equal divided by equal photons. got it. Quote Link to comment Share on other sites More sharing options...
Cancer Posted November 3, 2013 Report Share Posted November 3, 2013 Since E = m c^2, and the energy of a photon is E = h c / lambda, with E = energy, m = mass, c = speed of light, h = Planck's constant, pick a wavelength and you can tell how many photons of that wavelength would be the energy equivalent of a given mass. Be prepared for a large number. Quote Link to comment Share on other sites More sharing options...
Bazza Posted November 3, 2013 Report Share Posted November 3, 2013 cool thanks mr science guy. Quote Link to comment Share on other sites More sharing options...
L. Marcus Posted November 3, 2013 Report Share Posted November 3, 2013 Big numbers are better? Quote Link to comment Share on other sites More sharing options...
Cancer Posted November 3, 2013 Report Share Posted November 3, 2013 back of the envelope, about 2 * 10^72 photons, if lambda = 500 nm (green). Quote Link to comment Share on other sites More sharing options...
L. Marcus Posted November 3, 2013 Report Share Posted November 3, 2013 More than several moles. Quote Link to comment Share on other sites More sharing options...
Cancer Posted November 4, 2013 Report Share Posted November 4, 2013 More than a mole of moles. Quote Link to comment Share on other sites More sharing options...
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