How Did Ptolemy Explain the Retrograde Motion of Mars

question 20

Essay

How did Ptolemy explain the retrograde motion of Mars?

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Definitions:

Hair Cells

Sensory cells located in the inner ear, responsible for converting sound waves into electrical signals that go to the brain.

Auditory Ossicles

Three small bones in the middle ear called the malleus, incus, and stapes, which transmit sound vibrations from the eardrum to the inner ear.

Local Anesthetics

Drugs used to cause temporary loss of sensation or numbness in a specific area of the body without causing unconsciousness.

Action Potential

A rapid rise and subsequent fall in voltage or electric current across a cellular membrane, a process allowing for the transmission of nerve impulses.