physics 2 - exam 3

order the electromagnetic spectrum from low to high!

microwave, gamma, infrared, UV, radio, x-ray, visible

radio, microwaves, infrared, visible, UV, x-rays, gamma

μ₀ = (constant)

μ₀ = 4π x 10^-7

change this equation to solve for di:

1/d₀+1/d_i=1/f

d_i= (1/f - 1/d_o)^-1

WHERE are fringes ( aka x₁ and x₂)

x₁= L tan θ₁

where are d vs L

d is the distance between slits!
L is how far away the screen/surface where the light is projected on is!

film interference: constructive vs destructive

if n₁<n₂<n₃

→ destructive: 2t= (1/2)λ_n

→ constructive: 2t= λ_n

if n₂ is the greatest

→ destructive: 2t= λ_n

→ constructive: 2t= (1/2)λ_n

convert equation to solve the angle!! I= I₀ cos² θ

θ = cos^-1 [ (I/I₀)^1/2 ]

how to find θ given the size of the detail and how far away it is?

θ = S/L. (size/ length)

max E field strength units (E₀)

V/m

units of frequency (f)!

f = Hertz

units of Intensity

W/m²

solve for intensity given power and area???

I = P/A

angle of incidence….

angle of incidence is equal to angle of reflection!!

symbol for index of refraction??

n

equation to find wavelength of one phase change!!! (if OG equation is 2t = (m + 1/2) λ_n

λ = 4 tn 

equation to find wavelength of one phase change!!! (if OG equation is 2t = m λ_n

λ = 2 tn