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Living beings which have eyes can observe light. Nature has endowed the human eye with the sensitivity to detect electromagnetic waves within a small range of electromagnetic spectrum.
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∙ 13y ago
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What might you observe with a radio telescope that you couldn't observe with an optical telescope?
Object that only shine with radio waves and not in the visible spectrum an object hidden by dust that block visible light.
Is comet a concrete noun?
Yes. A comet is a real object that you can observe.
How do you measure the mass of the black hole at the galactic center?
If you observe an object in an elliptical orbit around something, AND you know the mass of the orbiting object AND the size of the orbit, you can calculate the mass of the object at the center (more precisely, at one of the foci) of the orbit. We observe several stars orbiting the super-massive black hole at our galactic center. We can calculate their mass based on the light they give off, and we can measure their orbits over time. From this, we can calculate the mass of that black hole.
If you observe an object 13 billion light years away how was there time for the object to expand that far out before it emitted the observed light?
That would be the current distance. It emitted the light 13 billion years ago, when it was much closer; in the meantime, it moved away from us.________________If it emitted the light we observe 13 billion years ago, then by definition the object we observe is 13 billion light years away. We have no way at all of observing what might be the object's true current location or distance. If the object still exists, it is completely beyond our relativistic frame of reference. Think of it this way. The actual events within the sun at this very moment are completely outside of our relativistic frame of reference. If the sun has exploded right in this very moment, we have no way of knowing anything at all about the event until about 8.5 minutes from now.The answer might have to do with the expansion of space itself, which is different from what we would think of as objects simply moving away from one another. The theory that many hold is that there was an extremely rapid expansion very early on after the onset of the universal expansion (big bang), much more rapid than we usually consider possible given the speed of light as the limit.
What evidence is there that the universe was different in the past?
We observe the universe with our various telescopes. Since light travels at a finite speed, it takes time for any light to travel from an object (say, a galaxy), to your telescope. Therefore, for any distant object, you are not seeing the object as it appears now, but as it appeared when the light left it.For very distant objects this can be billions of years, and further back in time you look, the more different the universe appears. Beyond about 13 billion years, there are no galaxies, for example.
The wavelength of light used to observe an object must be ... than the object itself?
The wavelength of light used to observe an object must be shorter than the size of the object itself.
What might you observe with a radio telescope that you couldn't observe with an optical telescope?
Object that only shine with radio waves and not in the visible spectrum an object hidden by dust that block visible light.
What did you observe about the wavelength and frequencies of the different colors of light?
A higher frequency means a shorter wavelength, and a lower frequency means a longer wavelength.
What the festival or custom celebrates or observe?
[object Object]
What do you observe when the path of light change?
you observe your mom
When light passes from one material to another you may observe?
You observe the light falling from another direction
What did you observe with the indicates of the colors of the light in the acrylic prism?
why did you observe with indices of refraction of the colors of light in the acrylic prism
What did you observe with the indices of refraction of the colors of light in the prism?
why did you observe with indices of refraction of the colors of light in the acrylic prism
What did you observe with indicates of refraction of the color of light in the acrylic prism?
why did you observe with indices of refraction of the colors of light in the acrylic prism
What kind of microscope would a scientist use to determine the shape of a cell?
A scientist would use a light microscope to determine the size and shape of a cell. A light microscope uses visible light to illuminate the object being viewed. Light microscopy is used to observe the overall size and shape of a cell. An electron microscope is used to observe the structure and contents of a cell, including membrane-bound organelles.
What is reflaction?
something that observe light
What is radiation or reflecting light?
When an object is radiating light, it means that the object produces light. When an object is reflecting light, it means that light "bounces off" the surface of that object.
