Linked Questions

0 votes
1 answer
2k views

speed of the light emitted from a fast moving object [duplicate]

Would not speed of the light emitted from the front of the fast moving object be the speed of light + the speed of the fast moving object?
dailywalker's user avatar
-2 votes
3 answers
714 views

Why can't we calculate the absolute velocity of the Earth using the speed of light? [duplicate]

We know that the speed of light is always constant in space no matter the speed of the object emitting light, right? Now consider this. An object is moving at half the speed of light and shined 2 ...
Erik Low's user avatar
-2 votes
1 answer
564 views

Will relative velocity of light exceed $c$? [duplicate]

Suppose I'm standing a few light minutes away from a light emitting object, as soon as the light is turned on, I project myself towards the object with some speed. Will the relative velocity of my ...
user3500780's user avatar
0 votes
1 answer
559 views

Is the speed of light constant relative to the observer? [duplicate]

Is the speed of light constant relative to the observer? Hypothetically, I am standing at the front of a train. The train is traveling 100 mph. I shine a flashlight pointing forward in the direction ...
farsideofourmoon's user avatar
0 votes
1 answer
329 views

How can travelling at light speed affect light itself? [duplicate]

~Hypothetical Scenario: Your driving in a car (with the headlights on high beam) and you gradually get faster until you reach the speed of light. Raised Assumptions: You can see in and out of the ...
user avatar
-1 votes
1 answer
239 views

Driving car with (almost) the speed of the light and switch the headlights on [duplicate]

I'm curious what will happen if we 'drive' a car with (almost) the speed of light, and all of sudden we switch the car headlights on? Will the car headlights ray have double speed (speed of 600.000km/...
ToTa's user avatar
  • 117
2 votes
2 answers
92 views

Special theory of relativity - relative movement [duplicate]

If Mr. Einstein traveled at 99.99999999% speed of light in one direction and shined light backward, would the photon hang static in the air? Traveling speed of light away from its source that travels ...
user avatar
-3 votes
1 answer
176 views

What is the speed photons coming out from headlights of a car running 100 km/h? [duplicate]

And, technically, would the color of the light change at different car speeds?
HAL9000's user avatar
  • 444
0 votes
2 answers
124 views

Scenario of Crossing the speed limit of our Universe [duplicate]

One of Important conclusions of Einstein's Theory of Relativity is that we cannot cross or break the speed limit set by the laws of physics that is the speed of causality consider this scenario: ...
Pushkar Soni's user avatar
-2 votes
1 answer
124 views

Speed of light, can it be not constant? [duplicate]

What if we switch on a flashlight while travelling at the speed of light (we are travelling in vacuum, in a straight path)? What will happen and what will be the speed of light from the flashlight? ...
Stuti Shukla's user avatar
0 votes
1 answer
146 views

Vector addition in speeds close to that of light [duplicate]

I've been studying special relativity and found a problem (at least for my limited knowledge): There's a car inside a train that is moving at speed $V_t$, for $V_t = 0.5c$. Once the car accelerates ...
William Fernandes's user avatar
0 votes
2 answers
78 views

Turning on headlights near light speed [duplicate]

If i turn headlights on in a car at v = 0.99*c, will the headlight speed be 0.01*c? I know speed of light is always the same but it really confuses me? My question is, does space contract so much at ...
as997's user avatar
  • 1
1 vote
1 answer
73 views

If I had a car which could go with a speed of light, could I drive it at night? [duplicate]

Just theoretically, when I turn on the lights in my super fast speed of light car, would I see the road if the light can't go faster than my car?
knm's user avatar
  • 35
-2 votes
3 answers
102 views

Concequences of the speed of light beeing absolute? [duplicate]

If photons have a speed limit (speed of light), what happens when you shoot photons through a flashlight but you yourself already have some speed? Do the photons from the flashlight only travel at [...
bob's user avatar
  • 7
-2 votes
1 answer
80 views

Will light be travelling faster than the speed of light? [duplicate]

If a photon is emitted from a light source travelling with some velocity, then surely the photon emitted in the direction of travel would have a velocity equal to the speed of light plus the velocity ...
user2019651's user avatar

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