because it is the fastest way to measure in very long distances for example earth to other far away planets
Because the distances are so incredibly far that to express them in miles or (god forbid) feet, inches etc would be incomprehensible. It would just be a wall of numbers. The closest star to our solar system is about 4 and a half light-years. Or roughly 50 trillion miles. To travel on earth as far as it is to get to the nearest star (out of about 300 billion stars in our galaxy alone) you would have to go around the world roughly 2 billion times. So rather than saying a galaxy is 9,394,000,000,000,000,000,000 miles away, they say it's X number of astronomical units, or X amount of lightyears away.
Some test instruments used in electronics are:Multimeter - Used to measure voltage, ampere and resistanceOscilloscope - Used to measure frequency and oscillations
Shrinking Universe
In the tangent universe he had increased strength, ability to manipulate water/fire, and telekinesis. He used these powers to save the universe. He is not just a hero, but a superhero.
to measure the perimeter we need a figure with boundaries and all the sides with dimensions
because it is the fastest way to measure in very long distances for example earth to other far away planets
They use lightyears and AU (Astronomical Units). They use kilometers, AU's and light years!! *Parsecs are also commonly used
exploding white dwarfs
They use lightyears and AU (Astronomical Units). They use kilometers, AU's and light years!! *Parsecs are also commonly used
Lightyears and miles
furlongs, miles, kilometres, lightyears etc.
lightyears
Lengths or distances.
It depends on what you are trying to measure. Long distances usually are measured in miles. Survey distances usually are measured in feet.
AU is not used to measure the distances on earth, because a astronomical unit is a unit of measurement equal to the distance between Earth and Sun. So that's why you cannot use Au for measure the distances on Earth.
Meters are used to measure distances.
1)placing cosmological constraints on the expansion of the Universe through the determination of distances to galaxies 2)to measure many characteristics of our galaxy and our relationship to it