Light-Gathering Power Is Proportional to the _______________ of the Telescope

question 42

Short Answer

Light-gathering power is proportional to the _______________ of the telescope primary lens or mirror.

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Definitions:

Net Present Value

The economic distinction based on the present valuation of incoming versus outgoing cash flows during a fixed period.

Profitability Ratio

A class of financial metrics used to evaluate a business's ability to generate earnings as compared to its expenses and other relevant costs incurred during a specific period of time.

Average Accounting Return

A financial ratio that measures the average net income a company expects to earn from an investment compared to its initial cost.