SPECIAL RELATIVITY

Römer measured the speed of light,

and something basic just wasn’t right.

because Michaelson and Morley

showed that aether fit data poorly.

We jump to 1905.

In Einstein’s brain, ideas thrive:

“The laws of nature must be the same

in every inertial frame”

We all believe in relativity, relativity, relativity.

Yes we all believe in relativity, 8.033, relativity.

Einstein’s postulates imply

that planes are shorter when they fly.

Their clocks are slowed by time dilation,

and look warped from aberration.

Cos theta-prime is cos theta minus beta ... over one minus beta cos theta.

Yes we all believe in relativity, 8.033, relativity.

With the Lorentz transformation,

we calculate the relation

between Chris’s and Zoe’s frame,

but all invariants, they are the same.

Like B dot E and B-squared minus E-squared,

... and the rest mass squared which is E-squared minus p-squared.

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

Soon physicists had a proclivity

for using relativity.

But nukes made us all scared

because E = mc2.

Everything is relative, even simultaneity,

and soon Einstein’s become a de facto physics deity.

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

GENERAL RELATIVITY

But Einstein had another dream,

and in nineteen sixteen

he made a deep unification

between gravity and acceleration.

He said physics ain’t hard at all

as long as you are in free fall,

’cos our laws all stay the same

in a locally inertial frame.

And he called it general relativity, relativity, relativity.

And we all believe in relativity, 8.033, relativity.

If towards a black hole you fall

tides will make you slim tall,

but your friends won’t see you enter

a singularity at the center,

because it will look to them

like you got stuck at radius 2M.

But you get squished, despite this balking,

and then evaporate, says Stephen Hawking.

We all believe in relativity, relativity, relativity.

Yes we all believe in relativity, 8.033, relativity.

We’re in an expanding space

with galaxies all over the place,

and we’ve learned from Edwin Hubble

that twice the distance makes redshift double

We can with confidence converse

about the age of our universe.

Rival theories are now moot

thanks to Penzias, Wilson, Mather & Smoot.

We all live in an expanding universe, expanding universe, expanding universe.

Yes we all live in an expanding universe, expanding universe, expanding universe.

But what’s the physics of creation?

There’s a theory called inflation

by Alan Guth and his friends,

but the catch is that it never ends,

making a fractal multiverse

which makes some of their colleagues curse.

Yes there’s plenty left to figure out

like what reality is all about about.

but at least we believe in relativity, relativity, relativity.

Yes we all believe in relativity, 8.033, relativity.

Max Tegmark (MIT course 8033, preprint) decided to replace boring calculations by the Beatles, with the guitar help by Tali Figueroa. Let's hope that the students, including those in the Yellow Submarine, will get the point faster than ever before. :-)Römer measured the speed of light,

and something basic just wasn’t right.

because Michaelson and Morley

showed that aether fit data poorly.

We jump to 1905.

In Einstein’s brain, ideas thrive:

“The laws of nature must be the same

in every inertial frame”

We all believe in relativity, relativity, relativity.

Yes we all believe in relativity, 8.033, relativity.

Einstein’s postulates imply

that planes are shorter when they fly.

Their clocks are slowed by time dilation,

and look warped from aberration.

Cos theta-prime is cos theta minus beta ... over one minus beta cos theta.

Yes we all believe in relativity, 8.033, relativity.

With the Lorentz transformation,

we calculate the relation

between Chris’s and Zoe’s frame,

but all invariants, they are the same.

Like B dot E and B-squared minus E-squared,

... and the rest mass squared which is E-squared minus p-squared.

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

Soon physicists had a proclivity

for using relativity.

But nukes made us all scared

because E = mc2.

Everything is relative, even simultaneity,

and soon Einstein’s become a de facto physics deity.

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

GENERAL RELATIVITY

But Einstein had another dream,

and in nineteen sixteen

he made a deep unification

between gravity and acceleration.

He said physics ain’t hard at all

as long as you are in free fall,

’cos our laws all stay the same

in a locally inertial frame.

And he called it general relativity, relativity, relativity.

And we all believe in relativity, 8.033, relativity.

If towards a black hole you fall

tides will make you slim tall,

but your friends won’t see you enter

a singularity at the center,

because it will look to them

like you got stuck at radius 2M.

But you get squished, despite this balking,

and then evaporate, says Stephen Hawking.

We all believe in relativity, relativity, relativity.

Yes we all believe in relativity, 8.033, relativity.

We’re in an expanding space

with galaxies all over the place,

and we’ve learned from Edwin Hubble

that twice the distance makes redshift double

We can with confidence converse

about the age of our universe.

Rival theories are now moot

thanks to Penzias, Wilson, Mather & Smoot.

We all live in an expanding universe, expanding universe, expanding universe.

Yes we all live in an expanding universe, expanding universe, expanding universe.

But what’s the physics of creation?

There’s a theory called inflation

by Alan Guth and his friends,

but the catch is that it never ends,

making a fractal multiverse

which makes some of their colleagues curse.

Yes there’s plenty left to figure out

like what reality is all about about.

but at least we believe in relativity, relativity, relativity.

Yes we all believe in relativity, 8.033, relativity.

Besides several equations, they also mention that the laws of Nature must be the same in every reference frame. Too bad that most of the blogosphere is outside

*any*

**reference frame**. ;-)

Can you read my post on relativity and leave your comments?

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