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Fourier Analysis, Time Evolution of Pulses on Strings
Academic Earth ^ | November 14, 2008 | Walter Lewin

Posted on 02/23/2009 11:15:28 AM PST by SunkenCiv

subtitled, "Lecture 11 of 23 from the course Physics III: Vibrations and Waves"

(Excerpt) Read more at academicearth.org ...


TOPICS: Astronomy; Science
KEYWORDS: stringtheory
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1 posted on 02/23/2009 11:15:29 AM PST by SunkenCiv
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To: AdmSmith; bvw; callisto; ckilmer; dandelion; ganeshpuri89; gobucks; KevinDavis; Las Vegas Dave; ...
A friend online pointed out this website of free courses. May want to watch for dropping leftist hints in some of the lectures, haven't explored much.

· Google ·

2 posted on 02/23/2009 11:15:55 AM PST by SunkenCiv (https://secure.freerepublic.com/donate/____________________ Profile updated Monday, January 12, 2009)
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To: SunkenCiv
Anyone interested in this subject is invited to read "The Elegant Universe"...a science background is not required to enjoy this tome.

Regardless, here is an interesting photo:

Photobucket

3 posted on 02/23/2009 11:20:43 AM PST by gorush (History repeats itself because human nature is static)
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To: gorush

That’s an incredible photo. All that brain power in one place.

I’m a huge physics buff and love reading as much as I can on all topics of physics, astronomy/astrophysics and math. There is a fantastic string theory podcast on iTunes called “Why beauty is truth - a short history of symmetry” that you should acquaint yourselves with too.


4 posted on 02/23/2009 11:29:42 AM PST by lefty-lie-spy (Stay metal. For the Horde \m/("_")\m/)
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To: lefty-lie-spy

Thanks, will do.


5 posted on 02/23/2009 11:50:45 AM PST by gorush (History repeats itself because human nature is static)
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To: gorush

Looked at that photo and all I could think was “If we can see farther than other men, it is because we stand on the shoulders of giants”...


6 posted on 02/23/2009 11:51:30 AM PST by Hegemony Cricket (The emporer has no pedigree.)
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To: SunkenCiv

Thanks. This is nice to see after months of being spammed by Young Earth Creationist nonsense.


7 posted on 02/23/2009 11:54:30 AM PST by DallasMike
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To: Hegemony Cricket

Amen to that brother. If, like the dark ages, we lose those shoulders, we revert to ancient times because, we as humans, are no different now than we were then.


8 posted on 02/23/2009 11:56:59 AM PST by gorush (History repeats itself because human nature is static)
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To: Hegemony Cricket

Julius Caesar’s burning of the library at Alexandria, and to a smaller degree Charlemagne’s lack of a substantial living heir, was responsible for the dark ages.


9 posted on 02/23/2009 12:01:18 PM PST by gorush (History repeats itself because human nature is static)
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To: Hegemony Cricket
Looked at that photo and all I could think was “If we can see farther than other men, it is because we stand on the shoulders of giants”...

Right. There's a picture of a giant's convention.

10 posted on 02/23/2009 12:08:18 PM PST by Steely Tom (RKBA: last line of defense against vote fraud)
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To: DallasMike

Thanks for bringing on the bloodbath in a topic that clearly isn’t about Darwin or related to natural selection.


11 posted on 02/23/2009 12:43:49 PM PST by SunkenCiv (https://secure.freerepublic.com/donate/____________________ Profile updated Monday, January 12, 2009)
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To: gorush

Since the Great Library wasn’t burned by Julius Caesar, that’s difficult to prove.


12 posted on 02/23/2009 12:44:34 PM PST by SunkenCiv (https://secure.freerepublic.com/donate/____________________ Profile updated Monday, January 12, 2009)
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To: SunkenCiv

I beg to differ...granted, I wasn’t there (but didn’t miss it by much) what I have read has given me my possibly erroneous (always ready to admit I could be wrong) interpretation. I’m ready to be enlightened.


13 posted on 02/23/2009 12:48:22 PM PST by gorush (History repeats itself because human nature is static)
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To: gorush

That is one hell of a gathering, eh? :’)


14 posted on 02/23/2009 12:50:12 PM PST by SunkenCiv (https://secure.freerepublic.com/donate/____________________ Profile updated Monday, January 12, 2009)
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To: gorush

‘Got 4 or 5 without looking.

Great photo. Thanks.


15 posted on 02/23/2009 1:02:22 PM PST by onedoug
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To: SunkenCiv

“The Rise and Fall of Alexandria” by Justin Pollard and Howard Reid, among others, is where I got my information.


16 posted on 02/23/2009 1:03:04 PM PST by gorush (History repeats itself because human nature is static)
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To: gorush

Okay, no problem, but they’re repeating a story which isn’t true. Caesar himself wrote that the fire spread to the dockside and to “some books which chanced to be there”. His vantage point was the citadel, which is where the Library was located, making his description (the only surviving eyewitness account of that fire, AFAIK) incompatible with a later account. Some ancient nimrod who didn’t like Caesar (name escapes me) bears responsibility for starting the spurious claim. The Library wasn’t destroyed per se until Moslem times, even though there were some Roman-era riots in Alexandria in which stuff got burned down and burned up.


17 posted on 02/23/2009 1:17:12 PM PST by SunkenCiv (https://secure.freerepublic.com/donate/____________________ Profile updated Monday, January 12, 2009)
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To: SunkenCiv

OK. So there was a Roman invasion in which Julius was the leader that resulted in the burning of the library. He later contended that his guys didn’t do it, maybe, maybe not. But he was there when it happened and he was leading the invading force. It may have been a bibliophobic Alexandrian that used the opportunity to destroy the library. I guess we’ll never know.


18 posted on 02/23/2009 1:24:51 PM PST by gorush (History repeats itself because human nature is static)
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To: gorush
So there was a Roman invasion in which Julius was the leader that resulted in the burning of the library. He later contended that his guys didn’t do it, maybe, maybe not. But he was there when it happened and he was leading the invading force. It may have been a bibliophobic Alexandrian that used the opportunity to destroy the library. I guess we’ll never know.
The point is, the Library wasn't destroyed -- it remained in use for hundreds of years thereafter. Had it burned, Julius Caesar would have discussed it, since the Library wasn't located on the wharves, but in the very citadel he and his troops were occupying.
19 posted on 02/23/2009 2:56:58 PM PST by SunkenCiv (https://secure.freerepublic.com/donate/____________________ Profile updated Monday, January 12, 2009)
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To: SunkenCiv

Like I said, I’m always ready to learn and an avid reader. What are your sources.


20 posted on 02/23/2009 3:01:33 PM PST by gorush (History repeats itself because human nature is static)
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