Announcements 4/4/12 Prayer Exam 3 ends Friday night
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Transcript Announcements 4/4/12 Prayer Exam 3 ends Friday night
Announcements 4/4/12
Prayer
Exam 3 ends Friday night
Done with liquid helium experiments… regular
office hours resume
Speed Bump
Announcement from Dr. Hart
Reading Quiz
Who theoretically derived the correct blackbody
radiation formula (energy emitted at various
frequencies)
a. Curie & Weiss
b. Plank
c. Rayleigh & Jeans
d. Sommerfeldt
e. Stefan & Boltzmann
Reading Quiz
What critical assumption did Plank make to
produce the correct formula?
a. continuous energy
b. quantized energy
c. long wavelength limit
d. short wavelength limit
Reading Quiz
Whose law says that the amount of emitted
blackbody radiation is proportional to T4?
a. Curie & Weiss
b. Plank
c. Rayleigh & Jeans
d. Sommerfeldt
e. Stefan & Boltzmann
Energy of all photons with freq. f
Waves in a “box”
Stefan-Boltzmann law
Plank radiation law