Doppler Effect - Sound - EM Radiation - Binary Stars - Neutron Stars and Black Holes - Expanding Universe
View the complete course: http://ocw.mit.edu/8-03F04
License: Creative Commons BY-NC-SA
More information at http://ocw.mit.edu/terms
More courses at http://ocw.mit.edu
I want this video on my C11 phone.
articlescholar 1 week ago
This video went viral on Egypt
juliantrevin38 1 month ago
Would you Expect that Mass Will Be Converted to a Form Which Emits Less Gravitational Field?
mdgreg 1 month ago in playlist Favorite videos
Nice lecture! Thanks.
I think there is a mistake in the way he derives the age of the universe at about 56:50. He is uses the relation d=ut where d is the distance the galaxies have travelled i.e. the distance from what was then the center of the universe. He then substitutes u=Hd by the Humble law.After that he simplifies the d on the left with the d from Humble law which is the distance from EARTH.So not the same d.
Am i getting something wrong?
angel13061987 4 months ago
at 24:20 if we wanted to see if the gravitational constant was different in the past perhaps we could find (m1 + m2) some other way and use that equation to get a reading of G in the past?
treven314 1 year ago
@maxwellsdaemon7 The general yardstick, the 'unit' is the distance light travels in a year. This distance does not depend on the radius of the universe, and thus it does not expand with the univderse.
luzzie9 1 year ago
I have a question. An often quoted analogy to describe the expansion of the universe is that of an expanding balloon, with points on the balloon representing galaxies. As the balloon expands, the points recede from each other, but doesn't the 'unit' of distance also expand with the balloon, so that the 'distance' between points remain the same? Can anyone care to enlighten me?
maxwellsdaemon7 2 years ago
can u please post polarization video
balli049 2 years ago
thank you!
sematic1 3 years ago