Physics, Calculus, and Sex

bobbycaputo: The Only Known Photograph of Einstein Deriving his...

Sun, 19 May 2013 22:40:44 -0400

The Only Known Photograph of Einstein Deriving his Famous E=mc² Equation

At a public lecture in Pittsburgh in 1934, four hundred lucky students were privy to a lecture by Albert Einstein, in which the great man mathematically derived his famous mass-energy equivalence equation: E=mc². What you see above is a photo from that lecture, and what is thought to be the only surviving photo that shows Einstein working on that derivation.

The photo was pulled from a halftone newspaper clipping by David Topper and Dwight Vincent of the University of Winnipeg, who discovered it in 2007. Sadly, everything is a bit fuzzy so you can’t really make out the famed equation itself. And even though the original article had a crisp picture of Einstein posing next to one of his blackboards, he’s next to the wrong one.

Here’s a closer look at the man and the math. If you look closely, you’ll see the mass-energy equivalence in the lower left hand corner of the blackboard on the right:

Fortunately, Topper and Vincent managed to take the blurry photo and reproduce both blackboards in their original paper. Here’s the math behind the magic, the derivation of mass-energy equivalence as presented by Albert Einstein.

In case you’re wondering why the famous equation says Δ

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Sun, 19 May 2013 22:34:24 -0400

gloomyteens: i have the sex appeal of a math book Math books ARE sexy.

Thu, 03 May 2012 23:32:43 -0400

gloomyteens:

i have the sex appeal of a math book

Math books ARE sexy.

are you planning to go see 'the beatles: the lost concert' film?

Thu, 03 May 2012 23:29:07 -0400

nope

je-suis-blue: icouldntthinkofacoolurl: je-suis-blue: zthezorua...

Wed, 04 Apr 2012 20:09:49 -0400

je-suis-blue:

icouldntthinkofacoolurl:

je-suis-blue:

zthezorua:

Coming on June 18

Kinda excited for this

I still am unsure of what the play style is. I wonder if it’s like an FF kinda attack based thing

Well Nobunaga’s Ambition is a turn-based war strategy game.

So it’ll probably add aspects of the Pokémon battle system into a wargame-like style.

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Wed, 04 Apr 2012 20:05:56 -0400

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Wed, 04 Apr 2012 20:02:16 -0400

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Wed, 04 Apr 2012 20:01:50 -0400

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Wed, 04 Apr 2012 20:01:23 -0400

Wolfram|Alpha can now calculate arc lengths!

Wed, 04 Apr 2012 20:00:52 -0400

wolframalpha:

Learn more on our blog.

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Wed, 04 Apr 2012 20:00:33 -0400

thenintendard: Psh. I would so win.

Wed, 04 Apr 2012 19:59:39 -0400

thenintendard:

Psh. I would so win.

insanelygaming: The Girl with the Dragonite Tattoo Created...

Wed, 04 Apr 2012 19:58:48 -0400

insanelygaming:

The Girl with the Dragonite Tattoo

Created by thebaobabs

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Wed, 04 Apr 2012 19:58:35 -0400

meme4u: http://memeblock.com/

Sun, 01 Apr 2012 13:02:54 -0400

meme4u:

http://memeblock.com/

collegehumor: Homeless Dog has Aggressive Sign Alright, I’ll...

Sun, 01 Apr 2012 13:02:04 -0400

collegehumor:

Homeless Dog has Aggressive Sign

Alright, I’ll give you money, but promise me you won’t spend it on bones.

quantumaniac: The Physics of Straws Straws, how complicated can...

Sun, 01 Apr 2012 13:00:57 -0400

quantumaniac:

The Physics of Straws

Straws, how complicated can they be? Most people have a few misconceptions about how straws work, but just like everything else - the answer lies with physics.

Upon placing the straw in a regular cup of water, the pressures inside and outside of the straw are equal! You can see this by noticing that the level of the water and in the glass are the same - both reach the same height of the straw.

When you suck on the straw, you are effectively decreasing the pressure in your mouth - and this lowers the pressure at the top of the straw. As soon as this happens, the force of the atmosphere pushing on the water in the glass is higher than the force of the gases inside the straw. Since pressure acts from high to low, the atmosphere forces the liquid water up the straw. In essence, you are not sucking the water into your mouth, but the atmosphere is pushing it!

Explain this to your friends the next time you’re out to eat - then write down a few bogus equations and they’ll think you’re a genius.

hellscreams-fisting: egelska: me Omfg true

Sun, 01 Apr 2012 12:59:20 -0400

hellscreams-fisting:

egelska:

me

Omfg true

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Sun, 01 Apr 2012 12:59:08 -0400

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Sun, 01 Apr 2012 12:58:13 -0400