The Period-Luminosity Relationship for Cepheid Variables Was Discovered by

question 29

Multiple Choice

The period-luminosity relationship for Cepheid variables was discovered by

• A) John Goodricke
• B) Henrietta Leavitt
• C) Edward Pickering
• D) Henry Norris Russell
• E) Annie Cannon

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Definitions:

Utility-maximizing

A principle in economics where consumers aim to get the greatest satisfaction from their spending, given their budget constraint.

Goods

Tangible items that are produced and are capable of being physically delivered to a consumer.

Px(MUx)

This expression denotes the price of a good (Px) multiplied by its marginal utility (MUx), commonly used in economic analysis of consumer choice.

MUx/MUy

Represents the marginal utility of good x relative to the marginal utility of good y, often used in consumer choice theory to analyze optimum consumption points.