Speed of Light from Star Moving Towards Earth | Physics with Professor Matt Anderson | M29-02

If a star is moving towards Earth at a speed of 90% the speed of light, what is the speed of its emitted light that we observe on Earth?
Physics with Professor Matt Anderson

[@fizixx]

Fascinating that it works that way -- the speed of light in different reference frames, that is.

[@qualquan]

No mention of color change or discussion of relativity of energy

[@rkreike]

Q: Light has a constant speed in vacuum of space, and a different constant speed in water, etc?
So a light coming from a car standing still is same speed as light from a car that is moving,
because also in the atmosphere lightspeed is a constant?

[@yoprofmatt]

Light speed is a constant not just in the atmosphere, but in vacuum.
Cheers,
Dr. A

[@nickmalone3143]

Some mediums can make the speed of light FASTER within the medium . They never talk about this phenomenon ...so speed of light is NOT constant. Eiensteins theory is wrong

[@sam17ado87]

@@nickmalone3143 they make speed light fast? give us an example genius

[@eclipse369.]

What is the proof that light is an emission traveling from point A to point b

[@anujkumar035]

1.9c

[@VideographerExperience]

tricky