Generally speaking what were to happen if say we were looking at a person on a planet 1 light year away with super bad *** telescope in your backyard. As you are looking at him he takes out a laser pointer and shines it in your eye. Do you see the light the moment he presses the button. Or does it have to travel the distance of space?
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You would see and be blinded by the laser light immediately. Why? Because the image you are seeing is one year old, it took one year to get to your telescope. But you are seeing it now. So when you see him point and shoot that laser, he did that one year ago and that laser light when you see it turned on has already traveled that one year. Zap. Go see the eye doctor.
So the answer is, you see the light the moment you see him press the button, but he pressed the button a year ago.
So the answer is, you see the light the moment you see him press the button, but he pressed the button a year ago.
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Generally speaking what were to happen if say we were looking at a person on a planet 1 light year away with super bad *** telescope in your backyard. As you are looking at him he takes out a laser pointer and shines it in your eye. Do you see the light the moment he presses the button. Or does it have to travel the distance of space?
1 light year is the distance light travels in 1 year
The speed of light = 3.0 * 10^8 m/s
1 year = 365 days * 24 hours/day * 60 minutes/ hour * 60 seconds/minute
1 year = 31,536,000 seconds = 3.1536 * 10^7 seconds
Distance = velocity * time = 3.0 * 10^8 m/s * 3.1536 * 10^7 s
Distance = 9.4608 * 10^15 meters = 9.4608 * 10^12 kilometers
Traveling through space takes time.
Light travels 9.4608 * 10^15 in 1 year
Time is used to determine the rate at which events are occurring.
Nothing happens without time passing!!
Do you see the light the moment he presses the button.
NO, you see the light 31,536,000 seconds after he presses the button!
If the person is 1 meter away from you, how much time passes as the light travel 1 m
Time = 1 m ÷ 3.0 * 10^8 m/s = 3.33 * 10^-9 seconds
1 nanosecond = 1 * 10^-9 seconds
Light travels 1 m in 3.33 nanoseconds
Nothing happens without time passing!
1 light year is the distance light travels in 1 year
The speed of light = 3.0 * 10^8 m/s
1 year = 365 days * 24 hours/day * 60 minutes/ hour * 60 seconds/minute
1 year = 31,536,000 seconds = 3.1536 * 10^7 seconds
Distance = velocity * time = 3.0 * 10^8 m/s * 3.1536 * 10^7 s
Distance = 9.4608 * 10^15 meters = 9.4608 * 10^12 kilometers
Traveling through space takes time.
Light travels 9.4608 * 10^15 in 1 year
Time is used to determine the rate at which events are occurring.
Nothing happens without time passing!!
Do you see the light the moment he presses the button.
NO, you see the light 31,536,000 seconds after he presses the button!
If the person is 1 meter away from you, how much time passes as the light travel 1 m
Time = 1 m ÷ 3.0 * 10^8 m/s = 3.33 * 10^-9 seconds
1 nanosecond = 1 * 10^-9 seconds
Light travels 1 m in 3.33 nanoseconds
Nothing happens without time passing!
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The light would blue shift.
Your super bad ash telescope would compress the wave frequency of the light.
Your super bad ash telescope would compress the wave frequency of the light.