Is it that I need to use the optical path length..ie refractive index x physical length in my calculations? That will make it work I think but can someone explain why...
Imagine a dielectric made of of alternating layers of widths A and B and refractive indices (a*) and (b*). Find the effective refractive index, N
So in general: c/n = wavelength x frequency = phase speed
My thinking was find the total time taken for the wave to propagate through the...
\nabla^2(Z)=0
Z= 0 for x=0, y=0
Z= x(1-x) for y=0
Z=0 for y=infinity
Range 0<x<1 and y>0 (suppose strictly speaking should be x=1 and x=0 too)
So all I want to do is solve this
Use separation of variables:
X''/X = a^2 = -Y''/Y
Gives X = Aexp(ax) + Bexp(-ax) and Y=Ccos(ay) +...
A coal box, in the shape of a cuboid, is to be placed flush against a wall so that only its top, front and two ends are visible. How should the height h and the depth d be chosen so a to minimise the visible surface area A under the constraint that the box must be able to contain atleast a...
Infrared radiation, of wavelength λair = 1um in air, travels through a
dispersive medium with refractive index n = 1.4505 and with
dn/dλair = -0.01 per um at this wavelength. Calculate the speed at which the
radiation carries information.
So know that
c/n = λf
radiation carries...
An open-ended quarter-wavelength, air-spaced, parallel-wire transmission line is found to
be in resonance with an oscillator when its length is 0.25 m. When a capacitance of 1 pF
is connected across the open end, it is found that the length of the line must be reduced
to 0.125 m to obtain...
Cars pass at randoms times at an average rate of one a minute. The chance of a car stopping to give you a lift is one percent. What is the probability you will have got a lift within one hour?
This has pretty much stumped me. I know λ=60 as expecting 60 cars an hour for the poisson...