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How does a beluga whale determine whether a fish is moving away from it or toward it?
Wiki User
∙ 10y ago
By using the Doppler effect
Wiki User
∙ 10y ago
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How do scientist determine whether a star is moving toward or away from earth?
they look at the sky and say hi to barney
How can astronomers determine whether a star is moving toward or a way from earth?
They can do so by examining the light from the star. Doppler shift can indicate this
Does the frequency of a railroad locomotive you hear increasedecrease or stay the same?
That depends on whether the locomotive is moving or standing still, and if it's moving, then that depends on whether it's => moving toward you or => moving away from you.
How can astronomers determine whether star is moving toward or away from earth?
Astronomers determine whether a star is moving toward or away from the Earth via the Doppler effect. Imagine a motorcycle moving past you. As it drives towards you, it has a higher frequency, and a lower frequency when it drives away. The same thing happens with light. As an object moves towards us, its light has a higher frequency and lower wavelength - this is called blueshift. As an object moves away from us, its light has a lower frequency and higher wavelength - this is called redshift.
How do astronomers determine the speed at which a galaxy is moving?
By examining its spectrum, and identifying absorption lines in it. Lines are shifted toward shorter wavelength if the object is moving towards us. They're shifted toward longer wavelength if the object is moving away from us.
Using the Doppler effect astronomers can determine a stars what?
How close and far something is from you.
How do light waves appear to an observer as the light source moves towards the observer?
If we measure the spectrum of the light, we can determine whether the light is moving toward us or away from us. Sunlight looks white, but is actually made up of thousands of individual colors, and the amount of each color depends on what the star is made of. In the far future, spacemen will be able to detect which star is which, by measuring the spectrum of the light. By measuring the pattern of the spectrum, and the exact frequency of the light waves, we can determine whether the light source is moving toward us or away from us. (Actually, that isn't exactly true; we couldn't tell if it was moving toward us, or WE were moving toward IT. But we will know what we're getting closer together.) There is one other "Gotcha!" about this. If the spectrum indicates that the light source is moving away from us, it is possible that the light source is very near a black hole. Gravity affects light just like it affects mass, and sometimes it is difficult to tell whether the light source is moving away, or if gravity is pulling the light away. Usually, we will be able to determine which is happening from other measurements.
How can astronomers determine whether a star is moving towards or away from earth?
Astronomers determine whether a star is moving toward or away from the Earth via the Doppler effect. Imagine a motorcycle moving past you. As it drives towards you, it has a higher frequency, and a lower frequency when it drives away. The same thing happens with light. As an object moves towards us, its light has a higher frequency and lower wavelength - this is called blueshift. As an object moves away from us, its light has a lower frequency and higher wavelength - this is called redshift.
What can astronomers learn about the stars motion based on wavelength shifts?
They can determine how fast the star is moving toward or away from us. The chemical spectral signature is used to determine the Doppler shift of the visible light reaching us. This is then used to calculate how fast we and the star in question are moving toward or away from each other.
What oceans do beluga whales live in?
they live in Ice's waters toward Alaska and the north pole
What is the society which some forecasters say that the world is moving toward?
We are moving toward a cashless society.
Why the particle is not moving toward negative x-direction?
Why the partical is not moving toward negative x-direction?
