Definitely not the same things. Intensity = power / area, in other words the concentration of energy in a wave over time and area determines its intensity. We must therefore take into account both frequency and amplitude.
Definitely not the same things. Intensity = power / area, in other words the concentration of energy in a wave over time and area determines its intensity. We must therefore take into account both frequency and amplitude.
Scroll the page above to middle-ish and there is a formula (they used omega rather than f, and omega stands for the angular frequency, which is omega = 2pi * f).
This formula is also found in the old version of EK physics, on the chapter of waves.