Physics 62 Special Relativity (26 of 43) The Relativistic Doppler Effect for Light

In this video I will find frequency, f=?, for the relativistic Doppler effect for light.

Next video in the Special Relativity series can be seen at:

[ollgggg]

Have to say, for a college student in undergraduate physics classes, your videos are so useful! Thanks and keep up the great work!

[BinhNguyen-ifyd]

please make a video on relativistic Doppler effect when observing under an angle

[PC-kyqo]

perfectly explained. Thank you very much.

[sonalidagar]

Probably the one of the best teacher..a thousand time better way of explanation than my college teachers. Love your way of teaching...thank you

[Pete]

Wow - I wasn't expecting to be able to follow, but it actually made sense... thank you Michel van Biezen!

[masterprabashwara]

"We must see that the clock is working as normal although when we move away from the clock at the speed of light."


Elbart Einstine said if we go away from a clock( clock tower) at the speed of light, we will see the clock is freezed.
But If the speed of light is constant and non relative.
So
When we go away from a clock at the speed of light, we can't see that light coming from clock is stopped because the speed of light doesn't depend on our speed ( speed of light is not relative). So even when we go at the speed of light. We must see the light of the clock tower going at the speed of light.
So how do we observe that the clock of the tower is freezed.
I don't think it is freezed.


"We must see that the clock is working as normal although when we move away from the clock at the speed of light."


Right?

[nabihahmahfuz]

it was nice video. for physics student like me, this video is very useful. thanks and keep it up!

[eriknelson]

If relativistic objects emit radiation focused in the forward direction ("headlight effect"), then do they reflect radiation the same way?

If so, then if any relativistic object reflects starlight, radar, etc., then it only does so towards its forward direction of travel, and is nearly invisible to the sides or rear?

[InfiniteUniverse]

I found this video by typing "relativistic tidal effects." I was looking the relativistic effects caused by gravity. Especially by filaments. I'm wondering if this can account for so called dark energy. Perhaps filaments are three or four orders of magnitudes more massive than measurements suggest. Can the tidal effect between such massive objects cause relativistic tidal effects known as "dark energy?"

[Navin]

you are good at explaining physics and helping out people.

[cani_caiado]

Thank you sir..
Your way of explaining makes it easy to understand better. I've understood it very well

[AngelAlita]

Hello sir, how did you get from c-u to radical and squared that?it is at 6.49. I didn't get the transition. Did you multiply or how? Would be grateful if you reply and thanks a lot for your videos!

[josephwheelerton]

im confusing some part of this. when you write f=c/((c-u)T) at around 2:57, isnt f defined as 1/T and therefore the substitution could be made (1/T)=c/((c-u)T) ? this doesnt make sense to me please help me understand what im doing wrong.

[iamsurajjawale]

Thanx sir, I am trying to solve this since past 10 days
Thnx sir ...❤
Thnx✔

[ManojP]

Since T is a period, shouldn't we use the Lorentz transformation T=gamma(T_0 - xu/c^2)

[rmuchala]

Is doppler effect and dopper shift same? Do you have a video for the derivation of
f^'= √((1±β)/(1∓β)) f, where beta = v/c ?

[iamsurajjawale]

Thanx sir, I am trying to solve this since past 10 days
Thnx sir ...❤
Thnx✔

[logician_..]

I'm privileged always i watch your video sir, i only heard of Einstein but you're the one for me.

[shaikrafik]

Sir please sir🙏🙏 ...humble REQUEST...please help me to know how to derive the time equation which u have taken in the middle🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏

[nellvincervantes]

Question sir michel. What if the observer also travels nearly as fast as the source of light, will the Classical Doppler's Effect be used instead of Relativistic Doppler's Effect? Sorry for this question sir.