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lakshmi
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what is the value of 1 light year
It is the distance light travels in one year. It, in itself, is a measure of distance so perhaps you're interested in converting this to meters? Miles?lakshmi said:what is the value of 1 light year
pmb_phy said:It is the distance light travels in one year. It, in itself, is a measure of distance so perhaps you're interested in converting this to meters? Miles?
Pete
'distance' as in 'within your own frame of reference' (or one not in relative motion to yours); to obtain a value for the distance as observed by someone in a different frame, just apply Relativity!GOD__AM said:A measure of distance? How can light speed be an accurate measure of distance when it travels with respect to an observer?
Because the speed of light is independant of the observer. Therefore since all observers measure the same speed of light, 1 light year is a well defined quantity (although different observers measure different distances between events, but that's a whole different topic).GOD__AM said:A measure of distance? How can light speed be an accurate measure of distance when it travels with respect to an observer?
I think that you are taking liberties with the meaning of the word value.decibel said:The valua at which light travels in a year is approx. 9,500,000,000,000 kilometers.
GOD__AM said:A measure of distance? How can light speed be an accurate measure of distance when it travels with respect to an observer?
A light year is a unit of measurement used to express astronomical distances. It is defined as the distance that light travels in one year in a vacuum, which is approximately 9.46 trillion kilometers (5.88 trillion miles). This distance is calculated by multiplying the speed of light (299,792,458 meters per second) by the number of seconds in a year (31,536,000 seconds).
A light year is a unit of distance, not time. It is used to measure vast distances in space, such as the distance between stars and galaxies. It is not a measure of time, but rather a measure of how far light can travel in a certain amount of time.
If we could travel at the speed of light, it would take one year to travel one light year. However, with our current technology, it would take over 100,000 years to travel one light year. This is because the speed of light is the fastest known speed in the universe.
No, light years cannot be used to measure time in space. Time is measured differently in space due to the effects of gravity and motion. Light years are only used to measure distances in space.
Light years are used to measure the vast distances in the universe. The observable universe is estimated to be around 93 billion light years in diameter. This means that the light we see from objects at the edge of the observable universe has been traveling for 93 billion years to reach us.