Why Did Karl Jansky Believe the Source of Radio Static

question 138

Multiple Choice

Why did Karl Jansky believe the source of radio static he was detecting in 1932 was not from terrestrial sources?

• A) In 1932 there were no strong sources of radio waves on Earth.
• B) He could detect the signals coming through Earth as well as from the sky.
• C) The radio static was most intense when the Sun was high in the sky.
• D) The radio static was most intense when the center of our Galaxy was high in the sky.

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Definitions:

Contribution Margin

The amount by which a product's sales revenue exceeds its variable costs, used to cover fixed costs and contribute to profits.

Unit Selling Price

The cost at which a single unit of product is sold to customers, important for determining pricing strategies and profitability.

Unit Variable Cost

The cost associated with producing one additional unit of a product.

Break-even Point

The stage at which total revenues equal total costs, resulting in neither profit nor loss for the business.