There is little or no similarity.
A radar is active (it radiates energy).
A telescope is passive (It relys on incoming energy)
The only thing I can think of, is that you point both towards an object and get some sort of information from it.
They all collect and focus light and other forms of electromagnetic radation.
A ray diagram would answer questions on lenses in a telescope or similar instrument
Your eyes are actually much more similar to binoculars than they are to a telescope, in that binoculars give one stereoscopic vision, like the human eyes do. But all binoculars magnify, and many have zoom magnification - the human eyes adjusts only for "basically close" and "basically far away".
A kalvin detect a metallic object in free space whereas a radio telescope is used for the purpose of sending or receiving data using similar techniques.
an artificial telescope is a telescope that is man made by people from NASA or anyone who can make a telescope
Radar is used to track things, while the telescope can only magnify or see things from a far distance. Radar is visible, while a telescope is not. Telescopes are old, radar is new (:
They function on entirely different principles. it is like asking what advantages does a parabolic sound detector ( a common spy device that looks like, but is not radar oriented) have over a pair of binoculars. one records sound or radio wavelengths, the other visual images. They have totally different applications one has a telescope operator as an observer, visually observing targets but the radio-telescope operator is merely a monitor. the analogy with radar is good as they are a derivative of Radio Direction and Ranging, hence RADAR,
Bismarck certainly had radar but it may only have been gunnery radar similar to that on the Graf Spee in 1939.
I guess a telescope.
They all collect and focus light and other forms of electromagnetic radation.
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telescope
Ultrasound is sound which has a frequency higher than that of audible sound.( like radar )ADDED: Not like radar. That uses radio waves, although sonar and radar principles are similar.
Bats have the ears which remind the radar and their function is also similar. (Only instead of electromagnetic impulses they receive ultrasound impulses.)
there is the radar hubble space craft mars rover telescope x-ray for space first rocket
A ray diagram would answer questions on lenses in a telescope or similar instrument
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