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Why can astronomers use the speed of light to calculate distances?
Wiki User
∙ 12y ago
Because visible light is emitted at a known frequency (a time) and then it is as simple as Speed = Distance / Time therefore Distance = Speed x Time.
Wiki User
∙ 12y ago
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How many hours is 3615 km?
That's a distance, and there's no direct conversion between distances and time. If you'd given a speed, then it'd be possible to calculate a travel time.
How do you calculate speed of a distance time graph?
Speed (in the radial direction) = slope of the graph.
What is the speed of light in kilometers per hour?
The speed of light is 1,079,252,848.8 kilometers per hour.
How do you calculate speed using distance and time?
Distance divided by speed will give you the time it took to travel the distance.
What travels at approximately 1117 million kilometres an hour?
Speed of light * * * * * Nothing, since the speed of light in vacuum is around 1080 million km/h. In any case, the "speed of light" does not travel!
What is the unit that astronomers most often use to express the wavelength of light?
Speed of light
What are some of the ways astronomers have measured interstellar distance?
speed of light
Why is the galaxy measured in light years rather than kilometers or miles?
Mostly because of the sheer number of digits it would take to write down the numbers in Kilometers or miles. A light year is 9,460,730,472,580.8 km or 5,878,630,000,000 miles. What is simpler, writing 236,518,261,814,520 kilometers or simply 25 light years? Also the speed of light is generally accepted as a constant speed, and precise way of measuring distance. (The question of why it ISN'T actually constant is a whole other issuer)
Light velocity is186000 using the light velocity when did supernova actually occurred relative to when the Chinese astronomers saw the explosion?
SN185, the first supernova recorded by Chinese astronomers in 185 AD, is estimated to be 8200 lightyears away from us. As such, the actual time of the explosion is estimated to be 8015 BC.Since large astrometric distances are measured in light years, it is not necessary to know the speed of light or use it in any calculation, for the purposes of answering this question.
Do all planets revolve around the sun at the same speed?
No. Each moves at a different speed. We can calculate that speed of orbit by knowing the distance of the orbit and the mass of the Sun. When observing other bodies, such as the moons of Jupiter and Saturn, we can use the observed distances and orbital times to calculate the mass of Jupiter or Saturn! Astronomers observing nearby stars are able to detect the faint decrease in light as a planet "transits" the star, passing between the star and us on Earth. Because they are able to precisely measure the time for each orbit, they are able to calculate the mass of the primary star much more accurately!
Which formula you use to calculate for the speed of light in water?
Speed of light in water = speed of light in vacuum/refractive index of water
What is the different astronomers that had a hand in creating the theory and then proving the speed of light?
Leonardo da Vinci
How do you calculate the frequency of light waves?
by dividing the speed of light with its wavelength
How do people calculate the speed of light?
by asking robel
How do you calculate speed of light wave with refractive index?
The speed of light in any medium isspeed of light in vacuum/refractive index of that medium.
How can you calculate speed of radar?
Radar emissions are electromagnetic radiation that travel at the speed of light.
The red shift of visible light waves that is observed by astronomers on earth is used to determine the?
The speed of relative retreat of the star.
