- #1
Vanessa Avila
- 94
- 1
Homework Statement
This is not a homework question but I would like if someone could explain to me when to consider what equation constructive/destructive? I learned these two equations very vaguely in class:
dsinθ = mλ or d(ym)/L=mλ
dsinθ = (m+1/2)λ or d(ym)/L = (m+1/2)λ
The power point provided for us in class says that dsinθ=mλ is constructive and the other eqn is destructive. However when we started discussing thin film interference, suddenly the equations turned to
2t = mλ
2t= (m+1/2λ)
and in some situations 2t = mλ an equation for destructive interference and vice versa. When do I also know which equation to use for specific situations?
Homework Equations
dsinθ = mλ or d(ym)/L=mλ
dsinθ = (m+1/2)λ or d(ym)/L = (m+1/2)λ
2t = mλ
2t= (m+1/2λ)