Lec 2 | MIT 8.224 Exploring Black Holes

The Universe: Questions You Were Afraid to Ask (Edwin Taylor and Kristin Burgess)

View the complete course at: http://ocw.mit.edu/8-224S03

License: Creative Commons BY-NC-SA
More information at http://ocw.mit.edu/terms
More courses at http://ocw.mit.edu

Category:

Education

Tags:

• mit
• opencourseware
• astrophysics
• cosmology
• GPS
• big-bang
• gravity
• energy
• momentum
• trajectories
• light
• particles
• orbits

[drumin5216]

Start watching this video at 22 minutes into it. In the first part they are just writing questions on the board, and they do not start answering them until the 22 minute mark.

[toborthegreat]

Dear Edwin and Kristin:

Very interesting course. Thank you. Victor

[Bearkiller777]

In fact in physics 2 my Professor had a week we did on General Relativity and a Week on Quantum mechanics. It was Very very interesting part of the course. he even tested/gave us a test question on it. Very few people could answer those questions correctly, and in fact even I did not answer them correctly. I did end up with a B in the course because i put in a lot of work though

[Bearkiller777]

Well that was interesting to hear that part of this course as when I took physics (I am an Engineer) at my University in Physics 2 i was very interested in these topics and was dissapointed we couldn't go into detail in them. glad they got into the details and nitty gritty. I knew most of the answers what they would say cause i have done a lot of googling on the subject matter. Even though we do not know a lot about some of this stuff. There is a lot we do know

[L00NGB00W]

@lfttom There is one theory to travel backwards involving wormholes. Where one hole is kept stationary, and the other hole is accelerated to light speed, or lowered near the event horizon of a black hole.

Due to relativistic time-dilation, objects entering the 'moved wormhole' would exit the stationary hole before they left. =\

This of course relies on the idea that wormholes are possible.

[lfttom]

@L00NGB00W You say we cant go back in time? Whilst this is true at present I prefer to think about it like this: why dont we let time go foward before we force it back? :) The idea about us being ina singularity is an interesting theory, even more interesting when you think of the universe as 95% nothing in the first place...

[VanMedia]

lmaooo "anyone have a question about the universe?"

silence ensues.... hahaha

[sustoismo]

good questions...

not happy with the answers..no meat

I would ask for my money back.

Kristin disrupting and really not adding too much.

learn to take a clue from your team member and jump in

wrote the questions will dig for them else where.

[boogiebuddy01]

this is awesome MIT is truly an inspiration an example to be followed for the cloistered world higher education system elite ie: every other ivy league in the world not posting their classes or research online, greedy bastards

[muzammilali007]

Edwin: Do you wanna talk about gravitational waves?

Kristin: No not really