Loose Leaf For Explorations: Introduction To Astronomy
9th Edition
ISBN: 9781260432145
Author: Thomas T Arny, Stephen E Schneider Professor
Publisher: McGraw-Hill Education
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Chapter 5, Problem 4TY
To determine
Use of interferometers for astronomers.
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The main reason for creating an interferometer with two separate radio dishes is to
a.
monitor two different radio wavelengths simultaneously.
b.
increase the intensity of the detected signal.
c.
compare objects in two different directions simultaneously.
d.
increase the resolution in the data.
Which of the following describes interferometry?
a.
It is used to improve resolving power.
b.
It decreases the chromatic aberration of a telescope.
c.
It works only for large X-ray and ultraviolet telescopes.
d.
It requires that radio telescopes be within a few hundred feet of each other.
e.
None of the above statements are true.
What happens in a Michelson Interferometer? And give a detailed example of where this apparatus is used.
Chapter 5 Solutions
Loose Leaf For Explorations: Introduction To Astronomy
Ch. 5 - What is light-gathering power? How does it affect...Ch. 5 - Prob. 2QFRCh. 5 - Prob. 3QFRCh. 5 - Prob. 4QFRCh. 5 - What is the purpose of an interferometer?Ch. 5 - Prob. 6QFRCh. 5 - Why do astronomers put X ray observatories in...Ch. 5 - Prob. 8QFRCh. 5 - Prob. 9QFRCh. 5 - Prob. 10QFR
Ch. 5 - Apart from magnification, how do binoculars help...Ch. 5 - Prob. 2TQCh. 5 - Prob. 3TQCh. 5 - Is it better to have a telescope with a high...Ch. 5 - Prob. 5TQCh. 5 - Prob. 6TQCh. 5 - Prob. 7TQCh. 5 - Prob. 8TQCh. 5 - Prob. 1PCh. 5 - Estimate your eyes resolving power by drawing two...Ch. 5 - Can the unaided human eye resolve a crater on the...Ch. 5 - Prob. 4PCh. 5 - Prob. 5PCh. 5 - Prob. 6PCh. 5 - Prob. 7PCh. 5 - Prob. 1TYCh. 5 - Prob. 2TYCh. 5 - Prob. 3TYCh. 5 - Prob. 4TYCh. 5 - Prob. 5TYCh. 5 - Prob. 6TYCh. 5 - Prob. 7TYCh. 5 - Prob. 8TYCh. 5 - Prob. 9TY
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- What kind of visible-light and infrared telescopes on the ground are astronomers planning for the future? Why are they building them on the ground and not in space?arrow_forwardWhen astronomers discuss the apertures of their telescopes, they say bigger is better. Explain why. a) A wider aperture can observe a significantly larger portion of the sky. b) A wider aperture makes a telescope easier to aim. c) A wider aperture allows a telescope to collect more light, so it can produce images with higher resolution. d) A wider aperture allows a telescope to collect more light, so it can detect fainter light sources.arrow_forwardImagine that you are the head of a funding agency that can afford to build one telescope. Which of the following proposed telescopes would be best to support? A. a visible light telescope in Earth orbit B. An x-ray telescope located on a mountain in Chile C. A gamma ray telescope in Hawaii D. An ultraviolet telescope located in Earth orbitarrow_forward
- Within the Solar System, a convenient unit of measurement is the Earth-Sun distance, called an astronomical unit (AU). For bigger distances, we use the light year (LY), the distance that light travels in one year. Starting with the values you can look up in the Appendices for the speed of light and the astronomical unit, calculate how many “light minutes” there are in 1 AU.arrow_forwardThe Very Long Baseline Array (VLBA) is a. the highest resolution optical telescope ever built. b. located in Arecibo, Puerto Rico. c. a matched pair of 8-meter telescopes, one of which is in Chile and the other in Hawaii. d. an airborne infrared telescope. e. a set of radio telescopes linked together electronically to provide very high resolution.arrow_forwardWhat are some advantages of radio telescopes over optical scopes? Explain how adaptive optics can help produce a sharper image.arrow_forward
- Why are the largest visible-light telescopes in the world made with mirrors rather than lenses?arrow_forwardName the two spectral windows through which electromagnetic radiation easily reaches the surface of Earth and describe the largest-aperture telescope currently in use for each window.arrow_forwardA particular color of light has a frequency of approximately 8 X 1014 Hz. Use the relationship speed of light = frequency X wavelength, to find the wavelength of this light in air. Multiply your answer by 109 to get your answer in units given. __________ nanometersarrow_forward
- A device attached to a telescope which allows us to measure motion of a star toward or away is called?arrow_forwardWhat is the ratio of the light-gathering power of a 10-meter telescope to that of a 1‑meter telescope? a. 10 to 1 b. 1 to 10 c. 100 to 1 d. 1 to 100 e. 3.2 to 1arrow_forwardWhich of these telescopes has the largest mirror, that is, the most "light gathering" capability? Palomar telescope, in California north of San Diego, with its single Pyrex mirror cast by Corning Glass. Vera Rubin telescope in Chile, soon to have the world's largest digital camera. James Webb Space Telescope, in orbit around the Sun at a Lagrange point beyond Earth. Hubble Space Telescope, oribing Earth every 90 minutesarrow_forward
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