Absorption

Question 1

di/dx =

Answer 1

• k*i

> k: absorption coefficient
i: intensity

Question 2

What is intensity attenuation at x?

Answer 2

~ proportional to the intensity remaining at x

Question 3

T =

Answer 3

i/io = exp(-kx)

> beer lambert law
k: thickness independent materials constant
T: transmittance

Question 4

What is UV absorption cutoff?

Answer 4

~ the cutoff is from excitation of electron energy levels

Question 5

What is infrared absorption cutoff?

Answer 5

~ ion vibration resonance

Question 6

What is the effect of OH- in glass network?

Answer 6

~ causes vibration resonance absorption bands

Question 7

How can window glass be made more thermally insulating?

Answer 7

~ multiple panes

~ spectrally selective reflective coatings