Understanding Our Universe
3rd Edition
ISBN: 9780393614428
Author: PALEN, Stacy, Kay, Laura, Blumenthal, George (george Ray)
Publisher: W.w. Norton & Company,
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 4, Problem 34QAP
To determine
The quantum efficiency and its contribution in detection of faint astronomical objects.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Explain Synthetic Aperture Radar Interferometry method.
Describe the SPECT and PET imaging techniques.
Explain spectroscopy as a study within astronomy. Include the following information: how the process is conducted, what information it can provide, and why it is essential to the study of astronomy.
Chapter 4 Solutions
Understanding Our Universe
Ch. 4.1 - Prob. 4.1CYUCh. 4.2 - Prob. 4.2CYUCh. 4.3 - Prob. 4.3CYUCh. 4 - Prob. 1QAPCh. 4 - Prob. 2QAPCh. 4 - Prob. 3QAPCh. 4 - Prob. 4QAPCh. 4 - Prob. 5QAPCh. 4 - Prob. 6QAPCh. 4 - Prob. 7QAP
Ch. 4 - Prob. 8QAPCh. 4 - Prob. 9QAPCh. 4 - Prob. 10QAPCh. 4 - Prob. 11QAPCh. 4 - Prob. 12QAPCh. 4 - Prob. 13QAPCh. 4 - Prob. 14QAPCh. 4 - Prob. 15QAPCh. 4 - Prob. 16QAPCh. 4 - Prob. 17QAPCh. 4 - Prob. 18QAPCh. 4 - Prob. 19QAPCh. 4 - Prob. 20QAPCh. 4 - Prob. 21QAPCh. 4 - Prob. 22QAPCh. 4 - Prob. 23QAPCh. 4 - Prob. 24QAPCh. 4 - Prob. 25QAPCh. 4 - Prob. 26QAPCh. 4 - Prob. 27QAPCh. 4 - Prob. 28QAPCh. 4 - Prob. 29QAPCh. 4 - Prob. 30QAPCh. 4 - Prob. 31QAPCh. 4 - Prob. 32QAPCh. 4 - Prob. 33QAPCh. 4 - Prob. 34QAPCh. 4 - Prob. 35QAPCh. 4 - Prob. 36QAPCh. 4 - Prob. 37QAPCh. 4 - Prob. 38QAPCh. 4 - Prob. 39QAPCh. 4 - Prob. 40QAPCh. 4 - Prob. 41QAPCh. 4 - Prob. 42QAPCh. 4 - Prob. 43QAPCh. 4 - Prob. 44QAPCh. 4 - Prob. 45QAP
Knowledge Booster
Learn more about
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
- Describe the techniques radio astronomers use to obtain a resolution comparable to what astronomers working with visible light can achieve.arrow_forwardlevel an ther will such radars disturb such radio astronomy measurements 4. If the intensity of the Sun peaks in the optical range, at a frequency of about 3:4 x 10 Hz, what is the temperature of the Sun? Use the Wien displacement law (1.25). If all of the power is emitted only between 3 and 4 x 10 Hz, how many photons per cm² arrive at the earth when the Sun is directly overhead? What is the power received on earth per cm³? A value for the solar power is 135mW per cm². How does this compare to your calculation?arrow_forwardPlease explain the meaning of resolution based on your understanding. Howcan you increase the resolution of CW-NIRS systems?arrow_forward
- What is birefringence? Describe the differences in the behavior of the ordinary and extraordinary rays. In what environments is birefringence observed?arrow_forwardIn order to observe emissions from celestial bodies Very Long Baseline Arrays (VLBA) have been developed. Explain why VLBA use multiple telescopes separated by long distances in terms of the wave nature of light. Include in your answer specific physics terminology, associated relevant equations, and a labelled diagram.arrow_forwardExplain the working principle of wavelength dispersive x-ray spectroscopy. In what ways is it superior/inferior to energy dispersive x-ray spectroscopy?arrow_forward
- A)The star 58 Eridani is a feint but naked-eye star similar to the Sun. Suppose that you are observing this star in the night sky without a telescope. Ignoring any interstellar extinction or atmospheric absorption, approximately how many photons per second arrive at your retina? Show all steps in calculation . B) The Mid-infared Instrument (MIRI , camera and spectrograph ) on the James Webb Space Telescope operates in the band 5-28 µm . For 58 Eridani , approximatley how many photons per second can be used by this instrument ? Assume that MIRI takes all the photons from the full JWST mirror . Show all steps in calcultation . Describe breifly two or three other factors which play a role in determining the sensetivitu of an instrument such as MIRI ?arrow_forwardWhat diameter telescope is needed to resolve the separation between an Earth-like planet and its star at 550 nm if the linear separation between them is 1 AU and the star system is 4 pc from Earth? (Give your answer in m.) marrow_forward1. Consider the following signal: x (t) = cos 2000лt + 2 соs 4000лt. What would this signal look like on a spectrum analyzer. Be sure to indicate relative magnitudes and frequencies. Describe the spectrum in words, e.g., "spikes at ..." If this signal were multiplied by a 1 MHz sine wave, find the spectrum of the product. (Describe in words.)arrow_forward
- . How are we able to determine the chemical composition and temperature of any visible object? ite often advertisements appear for telescopes that extol their aluating telescopes? enifviarrow_forward1. How do I calculate LOD (limit of detection) when I have a negative slope? 2. Can LOD be negative?arrow_forwardGive an example of a wavelength to distance ratio (λ/d) and describe its origin, meaning, and significance. Please, provide equations and pictures. Thanksarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
