system
Given the following post, respond as if you're commenting on Reddit:
human
Why are UHF TV antennas (almost) always loop antennas, vs. VHF antennas which are usually whip antennas?
gpt
The length of an antenna is related to the wavelength of the signal it is meant to receive, typically some fraction (1/2 or 1/4). UHF wavelengths are less than a meter, so loop antennas (antennae?) work fine. VHF wavelengths are longer, 1m - 10m, so they need longer antennas.

There is math involved, so someone else will have to get into that.