0
Add your answer:
Earn +20 pts
Do we see the universe now as it existed in the past?
True, since the speed of light is finite.
Why an explosion 100 light years away can be seen?
An explosion that occurs 100 light years away can be seen on Earth because light travels at a finite speed, so it takes time for the light from the explosion to reach us. Since the speed of light is finite, any event that occurs in the universe will have a delay in when we see it on Earth, depending on its distance.
Is it light speed or the speed of light?
speed of light I think well it sounds right:)
Is it possible to travel at the speed of light in water?
No, it is not possible to travel at the speed of light in water. Light travels at a slower speed in water compared to its speed in a vacuum, which is about 299,792 kilometers per second. The speed of light in water is approximately 225,000 kilometers per second.
Is the speed of sound as speed of light?
The speed of light is much greater than the speed of sound.
Is the speed of light greater or lesser in air than in water?
The speed is the same. Light travels at a finite speed.
Do we see the universe now as it existed in the past?
True, since the speed of light is finite.
How many image in 2 parallel mirrors?
It's not infinite, it's finite, because the speed of light is finite. Actually, when you look at one of these mirrors, the number of images will increase continuously at the velocity "c", so you can accept that its limit is infinite, but in other hand it's finite because the speed of light "c" is finite, it's a physical "optical" paradox.
Why an explosion 100 light years away can be seen?
An explosion that occurs 100 light years away can be seen on Earth because light travels at a finite speed, so it takes time for the light from the explosion to reach us. Since the speed of light is finite, any event that occurs in the universe will have a delay in when we see it on Earth, depending on its distance.
How many images are seen when two mirrors are placed in parallel?
If they are back to back, only 1. ------------------------------------------------------ If they are face to face,it's not infinite, it's finite, because the speed of light is finite. Actually, when you look at one of these mirrors, the number of images will increase continuously at the velocity "c", so you can accept that its limit is infinite, but in other hand it's finite because the speed of light "c" is finite, it's a physical "optical" paradox.
How many new stars appear to the Earth each year?
Assuming you mean due to the finite speed of light, that is a very hard question.
The velocity of light was first measured by?
The velocity of light was first measured by Ole Rømer, a Danish astronomer, in 1676. He used observations of the moons of Jupiter to deduce the finite speed of light.
What did Olaus Roemer discover about light?
Olaus Roemer discovered the finite speed of light in the late 17th century. He observed that the time it took for light to travel from Jupiter to Earth varied as the distance between the two planets changed, leading him to calculate a rough estimate of the speed of light. This discovery laid the foundation for later, more precise measurements of the speed of light.
This theory by Albert Einstein explains why all observers have their own separate measure of time because of the finite speed of light?
The theory you are referring to is Einstein's theory of relativity, specifically the concept of time dilation. It states that time can pass at different rates for different observers depending on their relative motion and gravity. This is due to the finite speed of light as a constant in the universe.
Is light finite?
Yes, light is finite in the sense that it can be absorbed or blocked by materials, leading to its energy being decreased or stopped altogether. However, light travels at a very high speed, so it often appears to be infinite in everyday experiences.
Can what you see really be what it is?
Light's speed is finite, so when you look out into space and see a star, you're seeing into the past, so it might have gone supernova or something.
What happens when you go the speed of light?
Short answer: As for today, we do not know for certain. It is by existing theory, Einstein's theory of relativity, impossible for matter (mass) to reach the speed of light.A little longer: By Theory of relativity, the energy which is required to reach the speed of light is a limit which stretch to infinity. As energy can't be created nor destroyed, there is a finite amount of energy in the universe, and the speed of light cannot be reached.
