instruments are technically used to enhance are sense to discover new things. Such as a telescope and a microscope.
Because their own senses are not accurate enough to measure the width of an electron.
microscoft
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telescope,spectroscope,spaceprove,viewer
testubes
microscopic things
ammeter
Thetools scientist use are Barometers, Anemometer's thermometers Richter Scale
to do science work, or make instruments
he was a famous scientist and he cured instruments in hospitals.
Instruments such as spectrophotometers, microscopes, chromatographs, and centrifuges could help the scientist determine the results of their study by measuring chemical concentrations, viewing samples at a microscopic level, separating compounds for analysis, and isolating specific components within a sample.
Study of... without knowing what the scientists are studying, you cannot know exactly what instruments they are using.