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What is the term for the distance light can travel in one year in a vacuum?
Wiki User
∙ 15y ago
The distance light travels in one year is called a light year.
It is approximately 6 trillion miles.
9.4605284 x 1015 metres
Light year is the distance traveled by light in one year. we just cannot imagine this. Because light travels 3*108 m/s. so just think how much it will travel in one minute, one day, one week, one month & one year.
Exactly 9,460,730,472,580.8 (just under 9.46*1012) kilometers.
Wiki User
∙ 10y ago
Wiki User
∙ 14y agoVacuum in this definition is the medium through which the light is travelling. Light travels slower in air, water, or glass, although they may be quite clear.
Wiki User
∙ 7y agothe distance that light travels in a vacuum in one year is called
Wiki User
∙ 13y agoThe "light-year" is the distance traveled by light, and every other example of
electromagnetic radiation, through a vacuum in one year.
Wiki User
∙ 11y agoThe distance that light travels in one year is known as a 'light year'.
Wiki User
∙ 15y agoThe term is light year.
Wiki User
∙ 13y agoa light year
Wiki User
∙ 14y agoA light year.
Wiki User
∙ 13y agoThat distance is known as a "light year".
Wiki User
∙ 14y agoLight years
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What term indicates an image through which light does not really travel?
virtual image
Why do astronomers say that looking at constellations is looking into the past?
Because of the speed of light. A light year is a term of measurement of distance, not time - i.e. the distance that light can travel in one year. Light travels at 299,792,458 metres per second - almost 3 million kilometres a second - therefore in one year it would travel a collosal distance - near 94 million million kilometres. When astronomers say a planet is 400,000 light years away, what we see of this planet happened 400,000 years ago since the light is only reaching us now. It would be another 400,000 years before we see that planet as it is today.
What term is used to describe the actual amount of light given off by a star at a standard distance?
the absolute magnitude
When was the light year discovered?
what is the name of make electricity? =========================== The light-year was not 'discovered'. It's a definition that was 'invented' when scientists began to work with distances that were too great to be described with the units of length that were previously available. For example, when the distance to the nearest star was measured, a paper had to be published to report the finding, but it would have been pretty awkward to report that the nearest star is about 24,635,900,000,000 miles from us. The 'light-year' was adopted in order to discuss 'astronomical' distances, being the distance that light will travel in a year. Using this unit, the nearest star is about 4.2 light-years from us, which is a lot easier to talk about. Today, scientists are routinely observing things that are billions of light-years distant from us, and the light-year itself is becoming too small and inconvenient, and other, larger units have been defined. Like the 'Parsec', which is about 32 light-years, or about 188,300,000,000,000 miles. And the 'Megaparsec', which is a million parsecs, or about 32 million light-years, or about 188,300,000,000,000,000,000 miles. You get the idea.
What does a cosmonaut travel to?
The term cosmonaut is used to describe Russian space travelers, the equivalent of the American term astronaut. In both cases, it means people who travel in outer space.
What is the term for the distance light can travel in a billionth of a second?
Light second
What term is used to describe the collection that includes gamma rays x-rays ultraviolet light visible light infrared radiation and radio waves?
All travel at the same speed through a vacuum
What is the astonomical term for the distance light travels in a year?
A light year.
Which these is a term for measuring distance in space?
light-year(:
What kind of wave is light considered?
Light a general term for a specific range of wavelengths in the electromagnetic spectrum, is not strictly just a wave, it shows particle and wave like properties, hence it being able to travel in a vacuum without a medium. However as a wave light is considered to be a transverse wave.
How many years are in 25000 light years?
Light years is a term that actually measures distance.
What term indicates an image through which light does not really travel?
virtual image
What term indicates an image through light does not really travel?
virtual image
How does light propagates in space and reach earth?
Almost all light in space is produced through nuclear fusion within stars. The light released through fusion is able to travel through the vacuum of space because it is part of the electromagnetic spectrum, which doesn't require a medium in which to travel unlike mechanical waves such as sound.
Why do astronomers say that looking at constellations is looking into the past?
Because of the speed of light. A light year is a term of measurement of distance, not time - i.e. the distance that light can travel in one year. Light travels at 299,792,458 metres per second - almost 3 million kilometres a second - therefore in one year it would travel a collosal distance - near 94 million million kilometres. When astronomers say a planet is 400,000 light years away, what we see of this planet happened 400,000 years ago since the light is only reaching us now. It would be another 400,000 years before we see that planet as it is today.
How fast is a sunlight?
In general light travels at an incredible speed ie 300,000 km per second. This is the speed of light in vacuum and in denser medium it will be a little bit reduced. In glass medium it will become 200,000 km per second. Any way in between sun and the earth the major part of the distance between them will be vacuum and the remaining is occupied by less dense air. So the speed of sun's light would be the same as 300,000 km per second. The amount of time it takes for sunlight to travel from the sun to earth is 8 minutes hense the term faster than the speed of light Sorry friend, it does not mean that light travels at faster rate. The distance between the earth and sun will be that quantity which would be covered in 500 seconds by the light with speed of 300,000 km per second.
When do you use the term light year?
When talking about the distances that separate stars and galaxies. A light years is the distance that light travels in one year.
