Horizons: Exploring the Universe (MindTap Course List)
14th Edition
ISBN: 9781305960961
Author: Michael A. Seeds, Dana Backman
Publisher: Cengage Learning
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Chapter 5, Problem 1DQ
To determine
The meaning of nice night, nice night for an astronomer. Does nice night depend on what type of astronomer is?
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Answer the following questions:
(i) Why is the thin ozone layer on top of the stratosphere crucial for human survival? Identify to which a part of electromagnetic spectrum does this radiation belong and write one important application of the radiation.
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___ nm
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What is the shortest wavelength of light that our eyes usually can see?
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What wavelength of light is too long to be visible to the human eye?
Chapter 5 Solutions
Horizons: Exploring the Universe (MindTap Course List)
Ch. 5 - Prob. 1RQCh. 5 - Prob. 2RQCh. 5 - Prob. 3RQCh. 5 - Prob. 4RQCh. 5 - Prob. 5RQCh. 5 - Prob. 6RQCh. 5 - Prob. 7RQCh. 5 - Prob. 8RQCh. 5 - Prob. 9RQCh. 5 - Prob. 10RQ
Ch. 5 - Prob. 11RQCh. 5 - Prob. 12RQCh. 5 - Prob. 13RQCh. 5 - Prob. 14RQCh. 5 - Prob. 1DQCh. 5 - Consider the “atmospheric windows” of Earth’s...Ch. 5 - The thickness of the plastic in plastic bags is...Ch. 5 - What is the wavelength of radio waves transmitted...Ch. 5 - Prob. 3PCh. 5 - Prob. 4PCh. 5 - Prob. 5PCh. 5 - Prob. 6PCh. 5 - H does the resolving power of the 5-rn telescope...Ch. 5 - If you build a telescope with a focal length of...Ch. 5 - Prob. 9PCh. 5 - Prob. 10PCh. 5 - Prob. 1LTLCh. 5 - The star images in the photo in Figure UN 5-4 are...Ch. 5 - The X-ray image in Figure UN 5-5 shows the remains...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.Similar questions
- Why is it difficult to observe at infrared wavelengths? What do astronomers do to address this difficulty?arrow_forwardAn idealized radiating object does not reflect or scatter any radiation but instead absorbs all of electromagnetic energy that falls on it. can you explain why astronomers call such an object a blackbody? keep in mind that even stars, which shine brightly in a variety of colours, are considered blackbodies. Explain why?arrow_forwardWhat is the wavelength in meters observed with a frequency of (4.5x10^15)? Answer with 2 significant figures and it must be in scientific notation. Note: Your answer is assumed to be reduced to the highest power possible. Your Answer: Answer x10 unitsarrow_forward
- What is the energy of an ultraviolet photon with wavelength 100 nm? What is the frequency of an ultraviolet photon with wavelength 119 nm? What is the wavelength of a radio photon from an "AM" radio station that broadcasts at 1420 kilohertz?arrow_forwardhello, I need help pleasearrow_forwardAn idealized radiating object does not reflect or scatter any radiation but instead absorbs all of the electromagnetic energy that falls on it. Can you explain why astronomers call such an object a blackbody? Keep in mind that even stars, which shine brightly in a variety of colors, are considered blackbodies. Explain why.arrow_forward
- The edge of the Sun doesn’t have to be absolutely sharp in order to look that way to us. It just has to go from being transparent to being completely opaque in a distance that is smaller than your eye can resolve. Remember from Astronomical Instruments that the ability to resolve detail depends on the size of the telescope’s aperture. The pupil of your eye is very small relative to the size of a telescope and therefore is very limited in the amount of detail you can see. In fact, your eye cannot see details that are smaller than 1/30 of the diameter of the Sun (about 1 arcminute). Nearly all the light from the Sun emerges from a layer that is only about 400 km thick. What fraction is this of the diameter of the Sun? How does this compare with the ability of the human eye to resolve detail? Suppose we could see light emerging directly from a layer that was 300,000 km thick. Would the Sun appear to have a sharp edge?arrow_forwardCalculate the wavelength of the em wave required to ionize a hydrogen atom (i.e., remove the electron in the ground state so that H-atom becomes H+ion). Determine the frequency of this em wave. In which region of the electromagnetic spectrum does this em wave lie?arrow_forwardHow do you measure distance using a terahertz imaging system?arrow_forward
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