The telescope was invented by _______.

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Galileo

Newton

Francis Bacon

Copernicus

answer is A.

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Detailed Solution

:
Concept: He was an Italian engineer, physicist, and astronomer who was born in Pisa. He is also known as the founder of observational astronomy, modern science, and physics.
1) Galileo invented the telescope in 1609.
2) He had heard that the Netherlands had created a device for showing distant objects. Through trial and error, he identified the solution and built his own telescope.
In order to build better telescopes, he also studied how to improve the tool and the art of lens grinding.
4) By 1609, Galileo was using telescopes with magnifications of up to 20 times greater to see the night sky.
He drew a drawing of the moon's phases and discovered that they are not as smooth as he had previously thought. He also discovered four Jupiterian moons in 1610.
His discoveries were truly ground-breaking.
Hence, the correct answer is option 1.

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