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Antenna as long as one-half the wavelength? No unread replies.No replies. It turns out that the depth in the ocean to which airborne electromagnetic signals

Antenna as long as one-half the wavelength?

No unread replies.No replies.

It turns out that the depth in the ocean to which airborne electromagnetic signals can be detected grows with the wavelength. Therefore, the military got the idea of using very long wavelengths corresponding to about 30 Hz to communicate with submarines throughout the world. It is desirable to have an antenna that is about one-half wavelength long. How long would that be?

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