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Why do single dish radio telescopes have poor resolving power compared to optical telescopes of the same diameter?
Radio telescopes are generally much larger than optical telescopes for two reasons: First, the amount of radio radiation reaching Earth from space is tiny compared with optical wavelengths, so a large collecting area is essential. Second, the long wavelengths of radio waves mean that diffraction severely limits the resolution unless large instruments are used.
Why would radio astronomers build identical radio telescopes in different places around the world?
There are at least two reasons why identical radio telescopes may be built. A mundane reason would to save money by reusing the same design. But the reason why most identical systems are built (not to say that saving money by reusing the design isn't still a factor in these cases) is to construct a "very long baseline interferometer", a type of multiple telescope system that uses properties of electromagnetic radiation (wave interference) to simulate telescopes with much larger apertures. This method attains the angular resolution of the larger telescope, but not the signal sensitivity.
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.
What are some reasons why the damage from the earthquake was so severe?
Some reasons why the damage from the earthquake was severe could include the earthquake's magnitude and depth, the proximity of populated areas to the epicenter, the quality of building construction in the region, and the local geological conditions that amplify seismic waves.
The natural body in space that orbits a planet?
A natural celestial body that orbits a planet is called a satellite. Moons are satellites of planets. The Earth has one moon, but other planets like Jupiter and Uranus have many moons or satellites.
What are some reasons you keep building larger and larger telescopes?
because the people of the world suck their dicks very hard
What were some of the reasons that Jamestown nearly failed?
The settlers were looking gor gold instead of farming or building houses
Two reasons for sending telescopes into space?
One reason for sending telescopes into space is so that people can get a better look at the stars the second reason for this is so that scientist can discover more about stars.
Do you know why some windows open inwards instead of outwards?
Windows that open inwards instead of outwards are designed this way for safety reasons. Inward-opening windows are harder for intruders to access from the outside, providing better security for the home or building.
What are 2 reasons for sending telescopes into space?
Telescopes in space are able to view objects clearly without having to look through a thick layer of the Earth's atmosphere. This enables them to capture better pictures and observe dimmer and more distant objects.
Explain why earth has only one satellites?
I've never seen a book that deals with this question. But I suspect that if the questioner is able to discover an answer some day, the answer will be related somehow to the reasons why Mercury and Venus have no satellites, why Jupiter and Saturn have at least 60 satellites apiece, and why the sun has only eight or nine planets.
What were Constantines reasons for building Constantinople?
so he can have his own capital.
State four reasons for building a nation?
Four reasons for building a nation might include creation of a national identity, cohesion of a society, cohesion of government, and the creation of economic stability.
What makes the building so famous?
It has good reasons or good memories from it
What are the reasons for declining boat and ship building in the uae?
the dicovery of oil
What are good reasons to name a building after someone?
If they did something in that area that is memorable
What are the reasons for declining ship and boat building in the UAE?
the dicovery of oil
