What type of electromagnetic wave has a wavelength roughly equal to the height of a person?

Answer 1

Interesting question.

Let's say 2 meters for convenience. That's about 6ft 6in.

Frequency = (speed)/(wavelength) = 300,000,000/2 = 150 MHz.

That's 'VHF' radio waves, with many applications. Right around that frequency

is a small piece of spectrum for "ham" operators, some satellite navigation, and

some land-mobile "2-way" radio used by taxis, businesses, courier and delivery

operations etc.

If you go up a bit higher in frequency from there, you arrive at the portion of the

radio spectrum which, under the old, traditional scheme of analog television,

used to carry TV channels 7 through 13, in the frequency band of 174 to 216 MHz.

That range of wavelengths is from 4ft 7.4in to 5ft 7.9in. (1.41 to 1.72 meters)

And if you drop down a ways in frequency, to wavelengths of 9.8ft (3 meters),

you arrive at 100 MHz. That's the "100" just above the middle of the dial on

your FM radio.

An easy way to get a feeling for some wavelengths: The horizontal elements or

'sticks' on an outdoor TV antenna are roughly 1/2 the size of the wavelengths

they're designed to receive.

Answer 2

A wavelength of, say, 6 feet, would be a radio wave in the VHF range.