Question

The diagram below shows different waves.

By counting the number of crests that pass by a given point in a set amount of time, what you would be calculating?

Answer 1

This is the frequency

Basic Terms - Frequency in physics is a cycle of a full radiation e.g. gamma ray’s have the highest frequency because they have high levels of energy

Answer 2

Frequency, since your looking at a specific time and a number of crests.