Doppler shifts, this is why things are called Doppler peaks later.

Dr. Doppler, I presume?

May I introduce Dr. Doppler?

I am the noted astrophysicist Dr. Delbert Doppler.

Doppler Effect is something very important from fundamental physics.

The Doppler Effect is used to discover extrasolar planets.

There is of course what we call the Doppler Effect.

There's a new technology, called Transcranial Magnetic Stimulation that Lara A. Boydis using in our Center.

Doppler shifts and broadening are anywhere across the face of the galaxy.

The Doppler effect is also observed with light and with radiant energy in general.

Spectral stars that are like those that make elliptical convolved with say Gaussian distribution of Doppler shifts.

Those are of course responsible for the Doppler peaks in the power spectrum of the microwave background.

Now 99.9 the speed of light is a very, very fast speed so this Doppler Effect, this blueshifting, is quite severe.

The second wish is, at the present time, the clinical trials of transcranial magnetic stimulators that's what TMS means, device to treat migraine headaches appears to be quite successful.

Based on the Doppler Effect, they expected to see blue shift for objects moving toward us, and red shift for ones moving away.

We could probably calculate the speed that the satellite is traveling, if we do a little basic math here using the Doppler effect.

This shows the actual Baryonic Acoustic Oscillation as they would appear, and those will map into the peaks of the Doppler peaks in the cosmic microwave background.

To observe the slight excess of clustering, corresponding to the first Doppler peak in microwave background, at the range of redshifts. And that can constrain cosmological perameters even better.

And the way we usually measure this is through Doppler broadening of their absorption lines as I'm sure you know, spectra of galaxies composed of stars, have many different absorption lines those are different elements.

But, because there are many, many different stars moving at random velocities, the total observed Line will be a weighted sum of those and it's shape will reflect the overall Doppler broadening by the velocity distribution.

And they said, Jeez, you know, we think we could actually take a look at the slope of the Doppler effect to figure out the points at which the satellite is closest to our antennae and the points at which it's farthest away.

And then confirmed, with Sloan Digital Sky Survey, there is a slight excess of power in clustering of galaxies on the scales that correspond now to that first Doppler The peak, except this is much later in the history of the universe.

You can decompose those in series of waves overlapping and the matter would fall towards the densest parts and because the matter and radiation are tightly coupled before the microwave background was released, radiation would follow, inducing some slight Doppler shifts in its thermal emission.