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Mathematics

When an electric current is passed through hydrogen gas at low pressure, visible light is observed. When this light is passed through a prism, four narrow bands of light are observed against a black b ...

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Physics

0 Page
EPPHYS152-Physics Essentials

...

Course

EPPHYS152

Subject

Physics

University

The University of Newcastle

Season

Autumn

0 Page
EPPHYS152-Physics Essentials

...

Course

EPPHYS152

Subject

Physics

University

The University of Newcastle

Season

Autumn

0 Page
EPPHYS152-Physics Essentials

...

Course

EPPHYS152

Subject

Physics

University

The University of Newcastle

Season

Autumn

pcs21x Wave Optics

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[Even more interesting is that Young's double slit experiment would eventually become critical in thedevelopment of a new model; In the early 1900s, conjectures based on - and verified with - Young'sapparatus lead to the formulation of the revolutionary concept of matter waves and the development ofquantum mechanics.]In this experiment we'll draw on our experience with the physics of travelling waves to develop a wave-like model that describes the intensity pattern of bright and dark spots observed on a screen. You'll beprovided a set of images of interference patterns from a double slit experiment. Given slit width , slitseparation , and distance to the image screen , you'll take fringe measurements from the images inorder to determine the wavelength, , of the light source.Pre-lab:Before your lab session

1. Prepare the introduction, theory (see pre-lab item 2), and experiment sections of your report.2. Assuming that travelling light waves can be described by the waveform ,A. Derive the intensity of light at a point P on a screen a distance l from the slits, due to two wavestraveling from slits A and B towards point P. In your own words, describe the pattern observedon the screen. (Hint: Consider the result of the summation of two waves. You may need toapply trig identities to derive a new equation expressing the result.)B. Draw a publication-quality image to supplement your derivation in (2.1). Your image shouldclearly illustrate wave fronts and the role of phase, , in your intensity derivation.Consider available options. Illustrations can be done well with simple or complex tools.Word/PowerPoint (or variations... Google Docs, Open Office, etc.)PhotoshopInkscapePython with drawSvg module (code-generated SVG vector graphics package)BlenderAutoDeskother?3. Under what conditions would you expect the waves of (2) to interfere constructively and generateintensity maxima? Derive the relationship between wavelength , slit width , and screen distance , that yield brightness maxima.4. (Optional) Given several known light sources of different wavelengths, how could you graphicallydetermine the slit separation of your apparatus from measurements of maxima spacing for thesewavelengths?

pcs21x Wave Optics

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Tellus molestie nunc non blandit massa enim nec dui. Tellus molestie nunc non blandit massa enim nec dui. Ac tortor vitae purus faucibus ornare suspendisse sed nisi. Pharetra et ultrices neque ornare aenean euismod. Pretium viverra suspendisse potenti nullam ac tortor vitae. Morbi quis commodo odio aenean sed. At consectetur lorem donec massa sapien faucibus et. Nisi quis eleifend quam adipiscing vitae proin sagittis nisl rhoncus. Duis at tellus at urna condimentum mattis pellentesque. Vivamus at augue eget arcu dictum varius duis at. Justo donec enim diam vulputate ut. Blandit libero volutpat sed cras ornare arcu. Ac felis donec et odio pellentesque diam volutpat commodo. Convallis a cras semper auctor neque. Tempus iaculis urna id volutpat lacus. Tortor consequat id porta nibh.

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Tellus molestie nunc non blandit massa enim nec dui. Tellus molestie nunc non blandit massa enim nec dui. Ac tortor vitae purus faucibus ornare suspendisse sed nisi. Pharetra et ultrices neque ornare aenean euismod. Pretium viverra suspendisse potenti nullam ac tortor vitae. Morbi quis commodo odio aenean sed. At consectetur lorem donec massa sapien faucibus et. Nisi quis eleifend quam adipiscing vitae proin sagittis nisl rhoncus. Duis at tellus at urna condimentum mattis pellentesque. Vivamus at augue eget arcu dictum varius duis at. Justo donec enim diam vulputate ut. Blandit libero volutpat sed cras ornare arcu. Ac felis donec et odio pellentesque diam volutpat commodo. Convallis a cras semper auctor neque. Tempus iaculis urna id volutpat lacus. Tortor consequat id porta nibh.

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When an electric current is passed through hydrogen gas at low pressure, visible light is observed. When this light is passed through a prism, four narrow bands of light are observed against a black background. An expression relating the wavelength of the emitted light to the electronic transitions ...

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