TVO's OBL 2K7 - Rupinder Brar (Lecture) - Part 1 of 6

[cameronsmart1]

Great lecture and an awesome professor. What surprised me most though was that nobody was on facebook/gaming which is 95% of people in other classes.

[Cocostrc19]

he won!!!!!!!!!!!!!!!!!!!!!!!

[Cocostrc19]

sicck

[LordAlda]

lol that's UB2080... bad cam quality.

[41Ram]

actually, that's UA1350 - and yes, the quality has been downgraded so that the upload is possible.

[silverstarmidnight]

Nice, we got stuck in the pavilion (aka the giant turnip) for the first half of this semester.

[m0tl3ysl4y3r]

sweet, I have this guy for physics 1010

he's so amazing

[noggin100]

Now tell me J,the background temperature of the Universe is 2.7281 Kelvin above absolute zero. So what property dependent speed is light going please when we see light from say the nearest star given we are in the medium not outside of it ? Do we see light from stars at slower rate than its suggested constant ?

[noggin100]

The background temperature of the Universe is 2.7281 Kelvin above absolute zero. So what property dependent speed is light going please ? Do we see light form stars at slower rate than we think ?

[lolointro1]

damn im in commerce but i got hooked to watching this whole thing....hes pretty good

[MisterNoodles795]

I have this guy for physics he's friggin amazing and a joker as well

[noggin100]

If the speed of light is constant,why does it slow to a walking pace when shot through a near virtual zero condensate as a lazer beam ?

[41Ram]

"It is constant in that particular medium. What is walking pace in a near virtual zero condensate by the way?" -R. Brar

[noggin100]

Quote:In 1999, Danish physicist Lene Vestergaard Hau led a team from Harvard University who succeeded in slowing a beam of light to about 17 metres per second and, in 2001, was able to momentarily stop a beam. She was able to achieve this by using a superfluid. Hau and her associates at Harvard University have since successfully transformed light into matter and back into light using Bose-Einstein condensates

[Jarrkha]

I am familiar with that series of experiments. The beams don't just "stop" in Bose-Einstein condensates. The molecules absorb the light and re-emit the exact same configuration through the other side of the condensate. B-E condensates have the potential to act like data storage mediums, basically.

Anyway, the point is that in any medium, light travels at set constant speed (dependent properties of that medium). Not ONE constant speed for all, but a property-dependent const speed.

[Perigaeum]

Very well done.