Chapter 3a

Question 1

Intensity v peak wavelength

Answer 1

intensity the measurable quantity of light
peak wavelength the wavelength of the highest intensity electromagnetic wave
released as thermal radiation

Question 2

Temp effect peak wavelength

Answer 2

Every object emits 0k emits some sort of thermal energy as a result of the kinetic energy of its atoms. This radiation occurs across the entirety of the electromagnetic
spectrum but is most intense at a particular wavelength, depending on the object’s
temperature. This wavelength is called the peak wavelength.
Wien’s Law is a mathematical relationship between the temperature of an object
and the peak wavelength emitted by the object, assuming it is a blackbody.

Question 3

Nm to m

Answer 3

Times 10^-9

Question 4

Black body in context of thermal radiation

Answer 4

absorbs all incoming radiation; it does not reflect or transmit any radiation
Emits the max amount of thermal radiation possible

Question 5

Peak wavelength formula

Answer 5

Wavelength max equals b over t

W: m
B: weins constant (2.898 times 10^-3)
T: temperature (k)

Question 6

Peak on wavelength intensity graph

Answer 6

Is visible light

Question 7

Things in nm of visible light also emit

Answer 7

Ultraviolet and infrared

Question 8

What does thermal energy from sun do

Answer 8

Keeping earth warm for us to live

Question 9

Hotter v cooler radiation

Answer 9

Hotter has more energy to emit therefore radiation

Question 10

Thermal energy emitted by object as radiation

Answer 10

Is area under intensity wavelength graph curve

Question 11

Curve of intensity wavelength graph

Answer 11

Ultraviolet first part
Upnis visible
Rest is infrared

Question 12

Radiation graph

Answer 12

While objects radiate most at peak they can radiate any wavelength in the spectrum although will still be higher then lower temp at each point