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How are interferometers used to measure electromagnetic waves?

Answer 1

The resolving power of a telescope is limited by its diameter. Making very wide telescopes is extremely expensive. The solution is to use two widely spaced devices and combine the results.

The idea is simple enough, even though I've never had to teach mathematics: the resolving power, or the capacity to distinguish between two objects that are closely spaced apart, increases as the diameter of the two or more telescopes in the array increases.

Wonderful, insightful advancement in experimentation!

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Answer 2

Emma Arguello

Interferometers combine multiple electromagnetic waves to create interference patterns, allowing precise measurements. They are employed in various fields, including astronomy and telecommunications, to determine properties such as wavelength, frequency, and phase.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.