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When was a telescope first used in space?
The first telescope used in space was the Orbiting Astronomical Observatory 2, or OAO-2, launched by NASA in 1968. This marked the beginning of a new era in space-based astronomy, allowing scientists to observe celestial objects without the distortion caused by Earth's atmosphere.
Who are the famous scientist who contributed in motion?
Isaac Newton is a famous scientist who made significant contributions to the understanding of motion with his laws of motion. Other renowned scientists who have made contributions to the understanding of motion include Galileo Galilei and Albert Einstein with his theory of relativity.
How did Galileo attempt to measure the speed of light?
Galileo used two distantly-separated lanterns in his experiment. Galileo knew that light traveled very quickly, but did not appreciate how fast it really is. Standing on a peak at night with a shuttered lantern, he sent a colleague with another lantern to a peak some miles away, where the lights would still be visible to each other when opened. At a prearranged time, Galileo would uncover his lantern. The colleague, when he saw the light from Galileo's lantern, would uncover his own lantern, so that Galileo could then see it. The time between Galileo's uncovering and the time he saw the other lantern would be the time it took light for a round trip equal to twice the distance they were apart. The result, as would be expected today, was that the colleague saw the light practically as soon as Galileo uncovered it, and uncovered his own, which was then visible practically instantaneously to Galileo. No matter how far apart they were, the brief time lag was identical. Considering the reaction time by the assistant, and the time taken to open the lantern, Galileo reasoned that light traveled far too quickly to be measured.
Why did Galileo want to find out what the speed of light was?
oh Galilieo
A scientist wants to know whether a particular cell is round or rectangular. How should the scientist observe the overall shape of the cell?
The scientist should use a light microscope.
