Which Method Did Ole Rømer Use to Show That Light

question 179

Multiple Choice

Which method did Ole Rømer use to show that light did NOT travel at infinite speed?

• A) Rømer observed that eclipses of Jupiter's satellites by the planet appeared to occur later, when Earth was farther away from Jupiter, because of the travel time for light over the extra distance.
• B) Rømer measured a time delay between the instant that he sent a flash of light to a mirror on a distant hill and the return of the flash after reflection.
• C) Rømer carried out a laboratory experiment in which a light beam was sent through an opaque, rotating disk with holes in it and reflected from a distant mirror, where the returning beam did not return through the same hole from which it left because of the travel time for light.
• D) Rømer measured a 2-second delay between the time of the outgoing pulse of light sent from Earth to the Moon and the time of the returning light pulse after reflection from the Moon.

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Definitions:

Shipment Seized

Refers to the action taken by authorities to take control of goods being transported due to regulatory, legal, or security violations.

Equilibrium Price

The market price at which the quantity of goods supplied is equal to the quantity of goods demanded, leading to a stable market condition.

Fine

A monetary charge imposed on individuals or entities as penalty for not complying with laws, rules, or regulations, distinct from a "fine imposed" which refers to the act of levying the fine.

Marginal Cost

The escalation in aggregate cost resulting from the production of an additional unit of a product or service.