Homework Statement
given that T(sun)=5771.4, S(Earth)=1370, D(Earth)=1.5x10^8km, R(sun)=7x10^5km
calculate the radiance of solar radiation at Earth orbit
Homework Equations
Irradiance=Radiance/Solid Angle
Solid Angle=Area/Distance^2
I=sigma*T^4
The Attempt at a Solution...
Homework Statement
If the Earth's average cloud cover increased, what effect would it have on the albedo temperature?
If the Earths albedo increased to 0.32, what would be the average temperature?
Ok I thought that if the albedo was higher, it would reflect more light, thus coolign would...
Homework Statement
Let us consider an approximation to an integral. Let f(x) be some continuous function on
[a, b]. We wish to find an approximation for the integral
I = int from a to b of f(x)dx
in the following manner:
Subdivide the interval into N intervals of length h = (b−a)/N. Let xi...
Homework Statement
Does anyone know a method or calculation, that can calculate the size of an e-beam? I made a 40 square micron pattern, in approximately 30 seconds with 5pA current if this helps... I have no idea how to estimate the size of the beam tho.
ok for the x^2 and y^2 values, i subbed in there respecful values x=rcos(theta) y=rsin(theta) then i get...
1+(sin(\theta)/sqrt(1-cos^2(\theta)/r^2))=1+(cos(\theta)/sqrt(1-sin^2(\theta)/r^2)), which clearly does no equal?
ok so if i do the chain rule that elib gave... i get (1/cos(theta))*cos(theta)+-1/(r*sqrt(1-x^2/r^2)*-rsin(theta)... but when i do dv/dy i kind of get similar answer, but instead of the x^2 its y^2, and the last term is cos(theta) and not sin(theta)