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Why have no large refracting telescopes been built since 1900?
Refracting telescopes suffer from chromatic aberration, refracting telescopes have several surfaces to shape and polish, making large glass lenses without interior defects is very difficult, and large glass lenses are more difficult to support than large mirrors.
Reflecting telescopes differ from refracting telescopes in having?
Reflecting telescopes use mirrors to gather and focus light, while refracting telescopes use lenses. Reflecting telescopes tend to be more compact and easier to support larger apertures, making them popular for professional astronomical research. Additionally, reflecting telescopes are less affected by chromatic aberration compared to refracting telescopes.
What telescope does not use visual light energy?
Radio telescopes and infra-red telescopes operate at longer wavelengths/lower frequencies than visible light. Ultraviolet telescopes operate at shorter wavelengths/higher frequencies than visible light.
What do scientists build telescopes on top of?
Some telescopes are on the earth this is because they are easier to maintain as it does not require launches to get astronaughts up there to fix them. Also they are cheaper having to make a telescope usable in space takes time and money, it also requires a launch which is expensive as well. It is easier to view the results as you can view them directly from the telescopes, instead of them having to be sent from space down to earth using microwaves then you need an antenna and other.
Which of this telescopes does not use visual light energy?
Radio telescopes and infra-red telescopes operate at longer wavelengths/lower frequencies than visible light. Also, ultraviolet telescopes operate at shorter wavelengths/higher frequencies than visible light.
Why have no large refracting telescopes been built since 1900?
Refracting telescopes suffer from chromatic aberration, refracting telescopes have several surfaces to shape and polish, making large glass lenses without interior defects is very difficult, and large glass lenses are more difficult to support than large mirrors.
What did Magellan do to become famous?
Proving that the earth was round instead of flat.
Reflecting telescopes differ from refracting telescopes in having?
Reflecting telescopes use mirrors to gather and focus light, while refracting telescopes use lenses. Reflecting telescopes tend to be more compact and easier to support larger apertures, making them popular for professional astronomical research. Additionally, reflecting telescopes are less affected by chromatic aberration compared to refracting telescopes.
Why do astronomers find it difficult to locate extrasolar planets with telephones?
Astronomers cannot locate extrasolar planets with telescopes because these planets are outside of our solar system and too far away for telescopes to directly observe. Instead, astronomers use indirect methods such as radial velocity and transit techniques to detect these distant planets.
The reason for Ferdinand Magellan exploration?
Ferdinand Magellan explored because he wanted to find spices for his country,yet found the pacific ocean instead. HE WAS REALLY LOOKING TO FIND THE SPICE ISLANDS!
What is the difference between radio nd optical telescopes?
Optical telescopes use either lens' (refractory) or mirrors (reflective) to magnify light. Radio telescopes use dishes to pick up radio waves. sensors on the dishes collect the waves and turn them into a picture
Country Magellan sailed for?
there! Ferdinand Magellan was Portuguese, but sailed for Spain (under Spanish King Charles the First) to find an alternate spice trade route to India (instead of using Portugal's route)
Is it all right to use lunch meat such as bologna to dust surfaces in your house instead of a damp cloth?
no, it makes surfaces dirtier
Where did Ferdinand Magellan want to go as an explorer?
he wanted you travel to the spice island by going West instead of East
Are scientists that explain events or phenomenon using natural laws instead of the supernatural?
These scientists were called "Naturalists"
Does light reflect from all surfaces?
No, not all surfaces reflect light. Surfaces that are smooth and polished, like mirrors, reflect light well. Rough or matte surfaces may absorb or scatter light instead of reflecting it.
Why can't we directly observe black holes?
Black holes are regions in space where gravity is so strong that not even light can escape. This makes them invisible to telescopes that rely on light to observe objects in space. Instead, scientists study the effects of black holes on nearby objects to indirectly learn about them.
