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A. The ability to see inside the human body without surgery was a turning point in the history of medicine. By the end of the 19^th century , people were using __ but did not understand what it was (according to a Yale University History Professor). electricity, radio waves magnetism (circle one)

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A. The ability to see inside the human body without surgery was a turning
point in the history of medicine. By the end of the 19^th century , people
were using __ but did not understand what it was (according
to a Yale University History Professor).
electricity, radio waves magnetism (circle one)

A. The ability to see inside the human body without surgery was a turning point in the history of medicine. By the end of the 19^th century , people were using __ but did not understand what it was (according to a Yale University History Professor). electricity, radio waves magnetism (circle one)

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QuentinElite · Tutor for 8 years

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electricity

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By the end of the 19th century, the discovery of X-rays allowed people to see inside the human body without surgery. However, the phenomenon was not well understood at the time. X-rays are a form of electromagnetic radiation, which is closely related to electricity.
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