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The light-gathering power of a telescope varies with the of the diameter of the lens or mirror?
Wiki User
∙ 14y ago
Yes, that is correct. A greater main mirror, or main lens, will gather more light.
Yes, that is correct. A greater main mirror, or main lens, will gather more light.
Yes, that is correct. A greater main mirror, or main lens, will gather more light.
Yes, that is correct. A greater main mirror, or main lens, will gather more light.
Wiki User
∙ 14y ago
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If the diameter of an objective mirror is doubled its light-gathering power becomes?
Just like any antenna used to collect electromagnetic energy at any other frequency, the 'gain' is proportional to the antenna's area. Since the area varies as the square of the collector's diameter, doubling the diameter increases the gain by a factor of 22 = 4. The corresponding increase in gain is 6 dB.
How much more light gathering power does a 5 meter diameter telescope have as compared to the human eye?
The primary mirrors of each of the two telescopes are 10 meters (33 ft) in diameter. A human eye has a pupil less than 8mm in diameter. The area of a Keck mirror is about 1,6 million times larger than that of the human pupil. (The sensors used are more sensitive too able to detect single photons).
How far away is the hubble deep field object to earth?
Light telescopes with a diameter of 30-50 meters are currently planned; probably larger ones will be built in the future. I believe the largest radio telescope has a diameter of about 300 meters. On the other hand, it is possible to connect (through a technique called interferometry) telescopes that are thousands of kilometers apart, so they have the resolving power (but not the light-gathering capacity) of a single telescope that size.
How big is the sun to the earth?
Its apparent diameter is about half a degree, or 30 minutes. It actually varies a bit, depending on whether the Earth is in periapsis or in apoapsis.
What is the size of hair (width) in millimeters?
Human hair varies in size greatly. A child's head hair can be as fine as 0.05mm. An adult's head hair can be as course as 0.25mm. Adult eye- brow hair can be as thick as 0.3mm. Hair is circular in shape, not flat like grass. Things which are circular or round in shape, do not have 'thickness', they have 'diameter'.The sizes above express the Diameter of Hair. In the Imperial system of measure, human hair varies between 0.002 inch & 0.010 inch Diameter.
How much more light can a telescope with an objective that is 36 inches in diameter gather when compared to a telescope that is 26 inches in diameter?
About 1.92 times as much. (rounded) The so-called "light gathering power" varies in proportion to the area of the objective lens or mirror, which in turn varies as the square of its diameter. (36 inches/26 inches)2 = 1.9172 = about 2.83 dB
What is the diameter of polaris?
varies
How many meters is the diameter in a circle?
It varies. There is no set diameter of a circle.
What is the diameter of meteorites?
The diameter of meteorites varies greatly, from the size of a grain of sand to the size of Mars (speculated).
What is the relationship between pump impeller diameter and pump horsepower?
The brake horsepower varies as a cube of the impeller diameter.
If the diameter of an objective mirror is doubled its light-gathering power becomes?
Just like any antenna used to collect electromagnetic energy at any other frequency, the 'gain' is proportional to the antenna's area. Since the area varies as the square of the collector's diameter, doubling the diameter increases the gain by a factor of 22 = 4. The corresponding increase in gain is 6 dB.
What is the diameter of a dodgeball?
The size varies but average is about 1-1.5 feet
What is the official diameter of a cabbage ball?
8 inches exactly, it never varies. Unless in Sweden where diameter is 7.5 inches.
What is the cost of a car mirror?
The cost of a car mirror varies depending on the type of mirror: mechanical or electric. Car mirrors may range in prices from sixty to one hundred dollars.
Why can't you give just one number to describe the earth's diameter?
The Earth is not a perfect sphere. The diameter varies depending on where you measure it.
The image formed by a convex spherical mirror will always be what?
The nature of the image is not constant. It varies with the distance between the object and the mirror.
The area of a circle varies directly as the square of the length of its diameter What is the constant of variation?
pi
