- #1

jjson775

- 101

- 23

- TL;DR Summary
- Don’t understand the general form of the sinusoidal wave equation.

I am a retired engineer, 81 years old, self studying modern physics using Young and Freedman University Physics.

I am familiar with the wave equation y(x,t) = A cos (kx - wt) where A = amplitude, k = wave number and w (omega) = angular frequency.

in the chapter introducing quantum mechanics, this equation is shown as:

y(x,t) = A cos (kx - wt) + B sin (kx - wt). What is the “B” part? Is it another amplitude? The equation is not shown in this form at all in the chapter on mechanical waves.

I am familiar with the wave equation y(x,t) = A cos (kx - wt) where A = amplitude, k = wave number and w (omega) = angular frequency.

in the chapter introducing quantum mechanics, this equation is shown as:

y(x,t) = A cos (kx - wt) + B sin (kx - wt). What is the “B” part? Is it another amplitude? The equation is not shown in this form at all in the chapter on mechanical waves.