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nr. 475 - 2010 - Institut for Natur, Systemer og Modeller (NSM)

nr. 475 - 2010 - Institut for Natur, Systemer og Modeller (NSM)

nr. 475 - 2010 - Institut for Natur, Systemer og Modeller (NSM)

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ii<br />

Abstract eller ej<br />

I stedet <strong>for</strong> et abstract følger her en del af en sang, der i 2008 er <strong>for</strong>fattet af<br />

Flora Lopis <strong>og</strong> Max Tegmark fra Dept. of Physics, Massachusetts <strong>Institut</strong>e<br />

of Technol<strong>og</strong>y, Cambridge, USA. Den er offentliggjort den 1. april 2008 <strong>og</strong><br />

indsendt til Physical Refuse. Sangen kan synges på Yellow Submarine fra<br />

Beatlesalbummet af samme navn (1969). Beatlessangen er fra 1966. (8.033<br />

henviser til det kursus i relativitetsteori, som Max Tegmark har undervist i<br />

på MIT).<br />

SPECIAL RELATIVITY<br />

Römer measured the speed of light,<br />

and something basic just wasn’t right.<br />

because Michaelson and Morley<br />

showed that aether fit the data poorley.<br />

We jump to 1905.<br />

In Einstein’s brain, ideas thrive:<br />

"The laws of nature must be the same<br />

in every inertial frame"<br />

We all believe in relativity, relativity, relativity.<br />

Yes we all believe in relativity, 8.033, relativity.<br />

Einstein’s postulates imply<br />

that planes are shorter when they fly.<br />

Their clocks are slowed by time dilation,<br />

and look warped from aberration.<br />

Cos theta-prime is cos theta minus beta ... over one minus beta<br />

cos theta<br />

Yes we all believe in relativity, 8.033, relativity.<br />

With the Lorentz trans<strong>for</strong>mation<br />

we calculate the relation<br />

between Chris’s and Zoe’s frame,<br />

but all invariants, they are the same.<br />

Like B dot E and B-squared minus E-squared,<br />

... and the rest mass squared which is E-squared minus p-squared,<br />

’cos we all believe in relativity, 8.033, relativity.

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