2007-02-05 01:49:59 · 16 answers · asked by Ahmed Yar K 2 in Science & Mathematics ➔ Physics
Creation
2007-02-05 02:38:04 · answer #1 · answered by no worries 4 · 0⤊ 4⤋
We know light travels with a speed of 3 x 10 raized to the power 8 m/s in vacuum or in air. The total distance that light can travel in one year i.e. 365 days is called lightyear. Note it is not a unit of time but the unit of distance which is very large and used to measure the distance between planets to other planets or some heavenly bodies etc.
2007-02-05 04:00:58 · answer #2 · answered by Anonymous · 0⤊ 0⤋
get this very clear
light year is a unit of distance and NOT time.
when it comes to measuring astronomical distances like distance between stars etc. km is too small a quantity and we have to add too many zeros.
hence the astronomers introduce the light year
the distance travelled by light in one year is 1 light year
distance=speed x time
1 light year= 300000kmps x 365 x 24 x 60 x 60s
a large quantity
so if a star is 2 light years away that means if you travel at the speed of light it will take you two years to reach it!!!
2007-02-05 16:57:01 · answer #3 · answered by photon 2 · 0⤊ 0⤋
In simple words, a light year is the DISTANCE travelled by light in 1 year. You can find this distance by simple calculation.
2007-02-05 02:39:09 · answer #4 · answered by Kristada 2 · 0⤊ 0⤋
A light-year is a unit of length. A common misconception is that a light-year is a unit of time, which is incorrect. A light-year is the distance light travels in vacuum in one year.
2007-02-05 01:53:08 · answer #5 · answered by silverpearl 4 · 0⤊ 0⤋
The distance traveled by the light in one year is known as
light year
2007-02-05 01:58:44 · answer #6 · answered by pvr_patel 1 · 0⤊ 0⤋
the term light year tells the distance travelled by a beam/ray of light in a straight line in 1 year.the long situated stars are measured the distance from earth in the units of light year.
2007-02-05 22:51:43 · answer #7 · answered by A Kid Student 3 · 0⤊ 0⤋
seriously- It is the unit of length used in astronomy for measuring distances between stars, planets etc. I think you know that it is the distance travelled by a light wave(classical electromagnetic theory) or a photon (quantum theory) through vaccum in one year. Quantitatively it is equal to 300000x60x60x24x365 km.
not seriously- If you become lighter this year.
2007-02-05 02:10:37 · answer #8 · answered by Debu 1 · 0⤊ 0⤋
Travelling at the speed of light for one year would take you one light year distance.
2007-02-05 01:54:08 · answer #9 · answered by Anonymous · 0⤊ 0⤋
Light Year is distance travelled by light in one year ( 365 days). Speed of light in vaccum is 300000 km/s ( 3 lacks kilometers) . So Distance Travelled by light in one year is :
9460800000000 Km
Light Year is used to measure distances between stars and earth means it is used to measure Huge Distances.
2007-02-05 02:03:55 · answer #10 · answered by Electrosam 3 · 1⤊ 1⤋
Avery large unit of distance.
=to distance travelled by light in vacuum in 1 solar year.
2007-02-06 05:24:45 · answer #11 · answered by RAM KRISHNA MISHRA 1 · 0⤊ 0⤋