What is a light year?
Info by Hungry for Knowledge | 2011-12-09 at 16:37
If you have never heard about the term light year before, maybe you think that a light year is a time value. But this is not the case. The light year is a specification for length.
When we talk about space and planets, we are talking about enormous long distances. These distances can be described only poorly with our normal lengths such as metres, kilometres or miles, because space distances displayed in miles would be monstrous in size.
So one agreed on the length unit light year to describe large disctances in space. A light year is now defined as the distance traveled by light in exactly one year.
Since light takes it way with a gigantic spped of about 300,000 kilometers per second, one can estimate that therefore, a light year is 9.500.000.000.000 (9.5 trillion) kilometres long. In miles, this are about 5.800.000 million miles.
About the Author
The author has not added a profile short description yet.
Show Profile
Related Topics
jQuery: Does an Element exist?
Tip | 1 Comment
MySQL: Write current Date or Time into Column
Tutorial | 0 Comments
Rewrite Text Files with a fixed Line Length
Tutorial | 0 Comments
Color Values: Convert RGB, CMYK, CMY, HSV, TColor and XYZ Values
Tutorial | 0 Comments
HTML: Preassign HTML Form with Data
Tutorial | 0 Comments
Send Form Input as an Array to PHP Script
Tip | 0 Comments
How to resize Image before Upload in Browser
Tutorial | 13 Comments
Important Note
Please note: The contributions published on askingbox.com are contributions of users and should not substitute professional advice. They are not verified by independents and do not necessarily reflect the opinion of askingbox.com. Learn more.
Participate
Ask your own question or write your own article on askingbox.com. That’s how it’s done.