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Electro-magnetic waves travel at approx 300 000 km per second in free space,
so we may determine the distance to an object (say a reflector on the moon),
by measuring the time from when we sent the pulse,
to the time when the pulse is returned.
AND divide that by two, for the EM wave travelled the distance twice.
What else can I help you with?
Why do astronomores measure in distance in space in light years rather then kilometres?
the distances in space are too large (astronomical) to use such small units as kms
How do Airplanes use Sonar waves?
Airplanes do not use sonar waves. Sonar is a technology primarily used underwater to detect objects or measure distances by emitting sound waves. Airplanes generally use radar technology to detect and track objects in the sky.
How do we use sonar?
Sonar is used to measure distances by transmitting sound waves and detecting their echoes as they bounce off objects. To use sonar, you typically send out sound waves from a source, wait for them to bounce back from objects in their path, and then measure the time it takes for the sound waves to return to determine the distance to the object.
What do scientists use to measure distances in space?
They use lightyears and AU (Astronomical Units). They use kilometers, AU's and light years!! *Parsecs are also commonly used
What unit would you use to measure the distances from?
you would measure distances in centimetres, metres and kilo metres.
Why do scientists use light-years and astronomical units?
meters, feet, and even miles are way too small to measure distances in space. astronomical units are mostly used to measure distances in our solar system. light years are used to measure the distances of things further away from our solar system.
What units do scientist use to measure distances in space?
They use lightyears and AU (Astronomical Units). They use kilometers, AU's and light years!! *Parsecs are also commonly used
What is the use of tape messure?
to measure distances
What is used to measure space?
Units of volume are. For big distances, astronomers use "light years" and "parsecs". A light year is the distance that light travels through space in one year.
What instrument do you use to measure a car park?
To measure a car park, you would typically use a tape measure or a measuring wheel. A tape measure can provide precise measurements of the length and width of the parking space, while a measuring wheel is useful for calculating larger distances and areas. Both tools are commonly used in construction and surveying to accurately measure spaces and distances.
How do scientists record the distances from one object in space to another?
They use scientific notation because of the vast distances in space.
When do you use meters to measure something?
Meters are used to measure distances.
