When an Astronomer Measures the Redshift to a Distant Galaxy

question 36

Essay

When an astronomer measures the redshift to a distant galaxy, exactly what physical process is being measured?

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Definitions:

Departmental Contribution

The amount of income earned by a specific department after direct costs associated with the department have been subtracted.

Overhead

The ongoing administrative, general, and maintenance expenses incurred during the production process, not including direct labor or materials costs.

Profit Centers

Parts of an organization that are responsible for generating revenue and evaluated based on their profitability.

Return on Investment

A performance measure used to evaluate the efficiency or profitability of an investment, calculated as net profit divided by the cost of the investment.