Estimate the angular resolutions of a radio interferometer with a 5000-km baseline, operating at a frequency of 5 GHz.
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- Daryl uses a microphone connected to an osail0scope to Studu sound waves. He Finds thar nigner Freavencies and shorter wave lengths while 10 wer PItched sounds have Iower Freavencles and 1onger wave lengths- Daryl concludes that the reiarion ship between the Freauency and the wave rength of sOund waves n air 15 the result Of Caus drion and not correlatlon. in two to three sentences, desuribe whether Daryl's conclusion is correct and explaln why not. or whyFor a human eye with a pupil diameter (aperture diameter D) of 0.005 meters, and a focal length of 0.022 meters, there will be a resolution limit due to diffraction at 0.6 microns (10^-6 meters) wavelength. If we space light-sensitive cells on the retina at this spacing, how many retina cells per meter (of retina) are there? cells/meter. Now suppose there are giants which are exactly twice the size of humans in each dimension. So giant eyes have pupils of 0.01 meters, and a focal length of 0.044 meters. How many retina cells per meter should the giants have? cells/meterWhat is bandwidth in an optical instrument? How does it relate to resolution and noise in an optical instrument?
- Two radio antennas separated by d = 302 m, as shown in the figure below, simultaneously broadcast identical signals at the same wavelength. A car travels due north along a straight line at position x = 1,040 m from the center point between the antennas, and its radio receives the signals. Hint: Do not use the small-angle approximation in this problem. (a) If the car is at the position of the second maximum after that at point O when it has traveled a distance of y = 400 m northward, what is the wavelength of the signals? m (b) How much farther must the car travel from this position to encounter the next minimum in reception?Suppose you want a telescope that would allow you to see distinguishing features as small as 6.5 km on the Moon some 384,000 km away. Assume an average wavelength of 550 nm for the light received. What is the minimum diameter of the mirror (in centimeters) that you could use in the telescope?Why do you think the presences of a detector effects the outcome of the Modern Double-Slit Experiment?