Black Body Radiation (6, 6)

(See “F0λ” in Chapter 3.)

Equations:

eb = σ ⋅ T4

f = F0λ(λ2;T) – F0λ(λ1;T)

eB1 2 f eb

λmax T = c3

q = eb A

Example:

Given: T=1000_°C, λ1=1000_nm, λ2=600_nm, A=1_cm^2.

Solution: λmax=2276.0523_nm, eb=148984.2703_W/m^2, f=.0036, eb12=537.7264_W/m^2, q=14.8984_W.

Magnetism (7)

Variable

Description

 

 

r

Relative permeability

B

Magnetic field

d

Separation distance

Fba

Force

I, Ia, Ib

Current

L

Length

N

Total number of turns

n

Number of turns per unit length

r

Distance from center of wire

ri, ro

Inside and outside radii of toroid

rw

Radius of wire

 

 

Reference: 3.

 

Equation Reference 5-31