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.
Yes, Galileo used a telescope to observe the phases of Jupiter in 1610. He discovered that the planet showed different phases similar to the Moon, which supported the heliocentric model of the solar system.
The William E. Gordon Radio Telescope at Arecibo in Puerto Rico stays where it's at, permanently. Its 'dish' reflector is 305 meters ( 1,000 feet ) across, and it's built into a valley in the ground.
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".
Telescope eyepieces are important of any visual telescope. It is the main part of the telescope and is what determines how the object will look like through the telescope.
No, looking at Venus through a telescope will not make you go blind. It is safe to observe Venus using proper eye protection and following safe viewing practices similar to observing the sun.
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 (:
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 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,
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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
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No. As you might guess from the name, radar uses radio waves. Radio waves, in turn, are a type of electromagnetic wave - in other words, in principle similar to light waves.
The first microwave ovens were sometimes referred to as "radar ranges" because the technology used in microwave ovens was adapted from radar technology developed during World War II. The microwave oven's ability to cook food quickly and efficiently through the use of microwaves, similar to how radar technology detects objects, led to the association with radar.