Mell Why you would not include sound waves in the electromagnetic spectrum?
Electromagnetic waves are not like sound waves because they do not need molecules to travel. This means that electromagnetic waves can travel through air, solid objects and even space. This is how astronauts on spacewalks use radios to communicate.
Is sound an EM wave if not what kind of wave is it?
Is sound an EM wave? If not, what kind of wave is it? No, sound is not an electromagnetic wave. Sound is a longitudinal mechanical (pressure) wave, which requires a medium in which to travel.
What advantage if any would radio astronomers have by building their telescopes at the tops of mountains?
Why do optical astronomers often put their telescopes at the tops of mountains, while radio astronomers sometimes put their telescopes in deep valleys? There would not be any real advantage to building radio telescopes on the tops of mountains and would be less shielded from radio noise from various human-made sources.
Why do astronomers not like beautiful sunsets?
The moon ROCKS! No pun intended. Most people like beautiful sunsets with brightly glowing clouds, bright moonlit nights, and twinkling stars. – Bright moons cause light pollution, which is why astronomers don’t like bright full moons.
Are Sound Waves radio waves?
Many people confuse sound waves with radio waves, one type of electromagnetic (EM) wave. However, sound and radio waves are completely different phenomena. Sound creates pressure variations (waves) in matter, such as air or water, or your eardrum.
Why do astronomers build telescopes on tops of mountains?
The reason large telescopes are built on tall mountains or put in space is to get away from the distortion of starlight due to the atmosphere. Because of the elevation, the telescopes are above most of the water vapor in the atmosphere, so infrared astronomy can be done.
Where is the best place to put a telescope on Earth?
Antarctica
Astronomers now have a new potential location to try to avoid the twinkling. Only one problem though: it’s really cold, especially this time of year. A team of astronomers from Canada, China, and Australia have identified a part of Antarctica as the ideal place to put observational telescopes.
How much dimmer is an object when it is 3 times farther away?
If it is three times farther away, it will look nine (three squared) times dimmer, and so forth.
Is the atmosphere good or bad for telescopes?
Turbulent cells of air in the atmosphere limit the actual resolution of telescopes in the optical wavebands to typically no better than that obtained by a 20-cm telescope. The seeing at any location depends upon many factors and changes due to temperature, weather, pollutants and local microclimate.
Why are sound waves not in the electromagnetic spectrum?
Sound waves are not in the electromagnetic spectrum. You should hence be careful about comparing the two. Sound waves always need a medium to propagate in, and hence their speed always depends on the medium. An EM wave (light) can also propagate in vacuo, where its speed is a constant (and it’s invariant).
How is the speed of sound related to temperature?
Anyhow the speed of sound depends on the material properties. In the air, the speed of light increases with the temperature. For our convenience, sound waves are classified into three bands as below. Longitudinal sound waves cannot be polarized as only transverse waves can be polarized.
How are sound waves propagated in the air?
Sound waves propagate through air, liquids, and plasma as longitudinal waves. In solids, on the other hand, sound waves can propagate as both longitudinal waves and transverse waves. Anyhow the speed of sound depends on the material properties. In the air, the speed of light increases with the temperature.
How is the electromagnetic spectrum different from the light spectrum?
The Electromagnetic Spectrum. This is called the “wave-particle duality” of light. It is important to understand that we are not talking about a difference in what light is, but in how it behaves. Low energy photons (such as radio photons) behave more like waves, while higher energy photons (such as X-rays) behave more like particles.