1 / 7

Daily Challenge, 1/7

Daily Challenge, 1/7 If light is made of waves and experiences interference, how will the constructive and destructive interference appear to us?. Light shows Interference

gwenifer-allen
Download Presentation

Daily Challenge, 1/7

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. Daily Challenge, 1/7 If light is made of waves and experiences interference, how will the constructive and destructive interference appear to us?

  2. Light shows Interference Interference is the mutual effect (superposition principle) of two beams of light resulting in a loss of intensity in certain regions (destructive interference) and an increase of intensity of other regions (constructive interference) Double Slit Interference – standing wave pattern similar to water wave tank Interference in thin films – occurs due to reflection off front and back of film being slightly out of phase

  3. Young’s Double Slit Experiment Thin Film Interference http://sol.sci.uop.edu/~jfalward/lightinterference/lightinterference.html

  4. Diffraction of Light Diffraction – the spreading of light into a region beyond an obstruction (happens on the scale of wavelength) Diffraction Gratings – optical surfaces with many parallel, closely spaced grooves when a beam of monochromatic light is passed through… a principal image, along with less intense 1st, 2nd, etc. images, are produced λ = d (sin θn) / m λ – wavelength of monochromatic light d – grating constant, in length units m – order number θn – diffraction angle, measured from principal image

  5. Daily Challenge, 1/8 Check out the “rainbow glasses” and “snowflake glasses.” Consider the physics of light discussed yesterday. How do these glasses work?

  6. Daily Challenge, 1/9 Minilab: (15 points) Use the diffraction gratings of known spacing to determine the wavelength of a laser. Sketch your experimental setup and show your work. Remember λ = d (sin θn) / m λ – wavelength of monochromatic light d – grating constant, in length units m – order number θn – diffraction angle, measured from principal image

  7. Physics Daily Challenge, 1/12 The specifications (accepted values) for groove spacing are 1.6 μm/groove on a CD and 0.7 μm/groove on a DVD. If you use a laser of known wavelength and the diffracted reflection images of the laser beam to calculate a groove spacing of 15,300 Å for a CD, what is the absolute and relative error of your measurement?

More Related