1 / 7

Lux et Veritas

Lux et Veritas. Radiation, which is the motion of the electromagnetic field, of which visible light is a small region, is due to the motion of charges  Move a charge = radiate. C= λ f = 3x10^8 m/s.

neo
Download Presentation

Lux et Veritas

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Lux et Veritas

  2. Radiation, which is the motion of the electromagnetic field, of which visible light is a small region, is due to the motion of charges  Move a charge = radiate

  3. C= λ f = 3x10^8 m/s

  4. CMB@3K, not owl poop, everywhere in space, this is exaggerated by a large factor (of like 10,000K) = almost the big bang…more later in the term

  5. Energy/momentum • E = h f h = planck’s constant = 6.63 X 10^(-34) (J*s) • P = momentum = E/c c= speed of light • E/B=c where E,B are field magnitudes

  6. C (first method) • a microwave oven,a bag of marshmallows, and a ruler. • (The oven must be of the type that has no mechanical motion-no turntable or rotating mirror. If there is a turn-table, remove it first.) • cover dish with a layer one marshmallow thick. • cook on low heat. • Heat the marshmallows until they begin to melt in four or five different spots. • measure the distance between the melted spots. You will find that one distance repeats over and over. This distance will correspond to half the wavelength of the microwave, about 6 cm. • Now turn the oven around and look for a small sign that gives you the frequency of the microwave. Most commercial microwaves operate at 2450 MHz. • Velocity = Frequency X Wavelength

  7. C (second method)

More Related