Who First Calibrated the Cepheid Variable Stars for Use in Determining

question 55

Multiple Choice

Who first calibrated the Cepheid variable stars for use in determining distance?

• A)Edwin Hubble
• B)Henrietta Leavitt
• C)Carl Sagan
• D)Harlow Shapley

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Definitions:

Assignment Method

A mathematical technique used for optimizing resource allocation where tasks or jobs are assigned to resources or workers.

Optimal Assigning

The process of allocating resources, tasks, or personnel in a manner that maximizes efficiency and outcomes and minimizes costs or time.

Process Times

The cumulative duration required to perform all steps in a particular process, from start to completion.

Jobs Sequence

The order in which tasks or jobs are processed in a manufacturing or service operation, influencing efficiency and productivity.