User contributions for Physdemo
From UO Physics Demonstration Catalog
- 11:05, 25 April 2022 diff hist +2 Photoelectric effect
- 11:05, 25 April 2022 diff hist 0 N File:Photoelectric effect 1.jpeg current
- 11:05, 25 April 2022 diff hist 0 N File:Photoelectric effect.jpeg current
- 11:04, 25 April 2022 diff hist +974 N Photoelectric effect Created page with "{{NewDemo|subject=Modern|topic=Quantum Physics|file1=photoelectric_effect.JPG|file2=photoelectric_effect_1.JPG}} First, the zinc plate connected to the top of the electroscope must be rubbed with steel wool to take away the zinc oxide that will naturally occur on the surface. The electroscope is charged up with electrons from a rod that has been rubbed with fur. Scrape the rod along the plate attached to the top of the electroscope to fully charge the electroscope. When..."
- 11:03, 25 April 2022 diff hist +28 Film Loops -- Quantum current
- 11:03, 25 April 2022 diff hist +298 N Film Loops -- Quantum Created page with "{{NewDemo|subject=Modern|topic=Quantum Physics|file1=}} * Free Wave Packets: 80 * Particle in a Box: 81 * Scattering in One Dimension - Barriers: 76 * Scattering in One Dimension - Edge Effects: 78 * Scattering in One Dimension - Momentum Space: 79 * Scattering in One Dimension - Square Wells: 77"
- 10:44, 25 April 2022 diff hist +660 N Sodium Vapor Created page with "{{NewDemo|subject=Light and Optics|topic=Spectral Lines|file1=}} A white screen is set-up with a sodium light behind one half of the screen and white light behind the other half. A bunsen burner is placed in front of the sodium lit part of the screen. Using the sodium solution and a dipper from the Burning Salts demo, burn some sodium solution in the flame. A distinct shadow is formed around the flame due to the sodium vapor absorbing the sodium light. Burn some salt..."
- 10:42, 25 April 2022 diff hist +531 N Chlorophyll Created page with "{{NewDemo|subject=Light and Optics|topic=Spectral Lines|file1=}} With a mortar and pestle grind up some green leaves and mix with a solution of acetone. Filter the acetone through a fine filter and obtain a clear green solution. Setup the overhead and diffraction grating as with the neodymium glasses and place the jar of green acetone on the overhead and note the spectrum colors that are absorbed. '''Location: ''' * Acetone: Under Fume Hood * Paper Slit: Shelf L-4 * Di..." current
- 10:42, 25 April 2022 diff hist +499 N Neodymium Glass Created page with "{{NewDemo|subject=Light and Optics|topic=Spectral Lines|file1=}} Set up the holographic diffraction grating with a slit paper and an overhead projector to obtain the white light spectrum. (See Light: Diffraction Grating) A pair of Neodymium glasses, commonly used by glass blowers, is placed over a slit on the overhead projector. Yellow lines in the spectrum will be absorbed by the glasses. '''Location: ''' * Neodymium Glasses: Shelf L-4 * Paper Slit: Shelf L-4 * Diffra..." current
- 10:42, 25 April 2022 diff hist +191 N Burning Salts Created page with "{{NewDemo|subject=Light and Optics|topic=Spectral Lines|file1=}} Salts can be burned while their spectra are looked at. '''Location: ''' * Salts: Shelf L-4 * Diffraction Gratings: Drawer 97"
- 10:41, 25 April 2022 diff hist +929 N Spectral Tubes 2 Created page with "{{NewDemo|subject=Light and Optics|topic=Spectral Lines|file1=tubes_01.jpg|file2=tubes_02.jpg|file3=tubes_03.jpg|file4=tubes_04.jpg}} Gas filled tubes are excited with a 5000v source. Diffraction lens glasses are passed out to the students (there are both full size diffraction glasses and 1/2 size, depending on audience size). Students are instructed to look at a line source such as a fluorescent light through the lens. Hold the lens so as to obtain the white light colo..."
- 10:40, 25 April 2022 diff hist +551 N Spectral Tubes/Signs Created page with "{{NewDemo|subject=Light and Optics|topic=Spectral Lines|file1=}} Neon gas filled signs are excited with a 5000v source. Students can observe the spectral "curves" obtained from the different neon gas signs. One sign says neon, another has the periodic table symbol for neon, Ne and a third sign is bent into the equation E=hn to remind students of the principle they are studying. '''Location: ''' * Spectral signs Ne and E=hn : Shelf L-1 * NEON Sign: Glassware Cabinet T-2..." current
- 10:38, 25 April 2022 diff hist +567 N Phosphor Board Created page with "{{NewDemo|subject=Light and Optics|topic=Phosphorescence and Fluorescence|file1=phospher board picture 1.jpg|file2=phospher board picture 2.jpg}} Create images using shadows on the phosphor board. Place your object in front of the board and adjust the distance of the UV flashlight until it casts a crisp shadow. It can be fun to silhouette a hand on the board, but please use caution with the UV light and wear gloves if you do this! Avoid shining UV light directly on bare..."
- 10:37, 25 April 2022 diff hist 0 Neon Sign current
- 10:37, 25 April 2022 diff hist +112 N Neon Sign Created page with "{{NewDemo|subject=Light and Optics|topic=Fluorescence and Phosphorescence|file1=Neon.gif}} '''Location:''' * *"
- 10:35, 25 April 2022 diff hist +21 Projection Holograms current
- 10:35, 25 April 2022 diff hist +60 N Projection Holograms Created page with "{{NewDemo|subject=Light and Optics|topic=Holography|file1=}}"
- 10:34, 25 April 2022 diff hist +173 N Laser Holograms Created page with "{{NewDemo|subject=Light and Optics|topic=Holography|file1=}} Numerous available, including Man in Lab, telephone w/ magnifying glass, skull, cherub. etc. '''Location:''' *"
- 10:34, 25 April 2022 diff hist +408 N White light holograms Created page with "{{NewDemo|subject=Light and Optics|topic=Holography|file1=}} Several white light holograms are available, including a smiling Shakespeare, crown, eyeball, paperclips, and a bird skull. These can be set up with the camera and monitor for classroom visibility. Also available is a circlular rotating holographic scene of a vampire bitng a woman. '''Location: ''' * Small Ones: Drawer 105 * Vampire: Shelf N-1" current
- 10:33, 25 April 2022 diff hist +32 Lasers current
- 10:33, 25 April 2022 diff hist +575 N Brewster's Angle Created page with "{{NewDemo|subject=Light and Optics|topic=Polarization|file1=Brewster.gif}} Polarization by reflection. If the angle of incidence is such that the reflected and refracted rays are at 90 degrees to one another, the reflected ray will be completely polarized in the direction perpendicular to the plane of incidence and to the reflected rays. As seen in the diagram a projector shines unpolarized light on a sheet of glass. A polarizer is placed in front of or after the reflec..." current
- 10:32, 25 April 2022 diff hist +406 N Corn syrup Created page with "{{NewDemo|subject=Light and Optics|topic=Polarization|file1=Corn Syrup.gif}} 1-2 inches of corn syrup is put in beaker on overhead. One polarizing sheet is placed over the beaker; the other is slowly rotated over it. As the plane of polarization of the light entering the solution rotates, rotational dispersion occurs and different colors are seen. '''Location: ''' * Syrup: M-2 * Polarizers: Drawer 118"
- 10:32, 25 April 2022 diff hist +133 N Polarizing sheets Created page with "{{NewDemo|subject=Light and Optics|topic=Polarization|file1=}} A variety of polarizers are available. '''Location: ''' * Drawer 118"
- 10:30, 25 April 2022 diff hist +292 N LED Light Strip - RGB Color Addition Created page with "{{NewDemo|subject=Light and Optics|topic=Color|file1=LightStrip.jpg}} RGB LED Strip shows color mixing. Controlled by an attached remote with a color wheel. Best viewed through diffraction glasses to see the individual colors. '''Location: ''' * Light Strip: O-0 * Diffraction Glasses: L-3"
- 10:30, 25 April 2022 diff hist +305 N Color Shadow Created page with "{{NewDemo|subject=Light and Optics|topic=Color|file1=Color Shadow.gif}} Two colors are projected onto a screen or wall, a little offset. When a hand or object is placed in front of one of the light sources, the shadow will be colored. '''Location: ''' * Bulb stand: Shelf Q-2 * Colored Bulbs: Drawer 115"
- 10:29, 25 April 2022 diff hist +491 N Complementary Colors Created page with "{{NewDemo|subject=Light and Optics|topic=Color|file1=colorcom.GIF}} This demo consists of a black sheet with a white stripe and white sheet w/ black stripe, joined in the middle. Viewed with the CCD camera through a prism, the white stripe breaks up into the normal spectrum and the black stripe into the complementary spectrum. can also be projected with a dual slit/slat slide in a slide projector. '''Location: ''' * Prism: Shelf M-3 * CCD Camera: Black Cabinet * Slit S..." current
- 10:29, 25 April 2022 diff hist +146 N Color Addition--transparencies Created page with "{{NewDemo|subject=Light and Optics|topic=Color|file1=}} Colored Transparencies. '''Location: ''' * Shelf N-4 & Drawer 116 * Part 2: Location 2 *"
- 10:28, 25 April 2022 diff hist +322 N Color Addition--on overhead Created page with "{{NewDemo|subject=Light and Optics|topic=Color|file1=Color Addition.gif}} A tray with 3 different colored filters sits on the overhead, which is facing backwards. On a stand are three mirrors whach are adjustable. The projected spots of color can thus be combined to show addition of colors. '''Location: ''' * Shelf N-4"
- 10:28, 25 April 2022 diff hist +1 Color Addition--Pyramid current Tag: Visual edit
- 10:28, 25 April 2022 diff hist +391 N Color Addition--Pyramid Created page with "{{NewDemo|subject=Light and Optics|topic=Color|file1=Color Pyramid.gif}} This demo consists of a triangular aparatus with colored lights at each point. A white pyramid in the middle of the triangle rotates in such a way as to gradually combine different amounts of color on each face of the pyramid. The different colors produced will demonstrate color mixing. '''Location: ''' * Shelf N-0"
- 10:27, 25 April 2022 diff hist +295 N Sunset Created page with "{{NewDemo|subject=Light and Optics|topic=Color|file1=Sunset.gif}} Fill the tank with water plus 150 ml. of a saturated solution of Sodium Thiosulfate. The addition of 15 ml. of HCL will initiate the precipitation of Sulfur which will scatter the light.. '''Location: ''' * Chemicals: Fume Hood"
- 10:27, 25 April 2022 diff hist +490 N Color Subtraction Created page with "{{NewDemo|subject=Light and Optics|topic=Color|file1=ColorSubtraction.gif}} The color subtraction demo consists of a box with seven lighted windows, of which the top is white and the remaining six are covered by colored filters. By placing the included plastic filters over the windows, it can be demonstrated that each filter will absorb certain colors and transmit others. By overlapping the filters, principles of color addition can also be demonstrated. '''Location: ''..."
- 10:26, 25 April 2022 diff hist +125 Prism and White Light
- 10:23, 25 April 2022 diff hist +198 N Moiré Pattern on Overhead Created page with "{{NewDemo|subject=Light and Optics|topic=Diffraction and Interference|file1=}} A set of two overhead transparancies which demontrate Moire patterns. '''Location: ''' * Shelf D-3, or sometimes, M-3"
- 10:23, 25 April 2022 diff hist +916 N White Light Interference Created page with "{{NewDemo|subject=Light and Optics|topic=Diffraction and Interference|file1=White Light Interference.gif}} Set up the interferometer with the laser by adjusting mirror 1 until the center of the diffraction pattern comes into view (see: Michelson Interferometer). Replace the laser with a white light source. The white light interference pattern (color bands) has been found at 16.1 ą .1 on the Vernier scale. Be aware that there is a very small range over which the interfe..."
- 10:22, 25 April 2022 diff hist +843 N Michelson Interferometer Created page with "{{NewDemo|subject=Light and Optics|topic=Diffraction and Interference|file1=Interferometer.gif}} An incident laser beam encounters a beam splitter. The two subsequent beams bounce off of mirrors and then rejoin. Interference results from the path length difference of the two beams. There is also a compensation plate which acts to give both beams the same amount of travel through glass. The two beams will appear on the screen along with an unfortunate secondary reflectio..."
- 10:22, 25 April 2022 diff hist +162 N Slits, one-to-many, with microwave Created page with "{{NewDemo|subject=Light and Optics|topic=Diffraction and Interference|file1=}} A kit with microwave generator and receiver and slits. '''Location: ''' * Shelf N"
- 10:21, 25 April 2022 diff hist +232 N Two-Slit Interference Created page with "{{NewDemo|subject=Light and Optics|topic=Diffraction and Interference|file1=}} Can use the Slit Film, with the red or green laser, to generate a two-slit interference pattern. '''Location: ''' * Film: Drawer 96 * Lasers: Shelf M-2"
- 10:21, 25 April 2022 diff hist +1 Soap Film Interference current
- 10:20, 25 April 2022 diff hist +393 N Soap Film Interference Created page with "{{NewDemo|subject=Light and Optics|topic=Diffraction and Interference|file1=Soap Film Inteference.gif}} Light is reflected off of soap film and projected onto a screen. Just before the film breaks, when it is at its thinest, the reflected light goes black. Projection of patterns is set up as in Newton's Rings demo. '''Location: ''' * Soap Bubbles: Under Fume Hood * Bubble Ring: Drawer 106"
- 10:20, 25 April 2022 diff hist +689 N Newton's Rings Created page with "{{NewDemo|subject=Light and Optics|topic=Diffraction and Interference|file1=NewtonRings.gif}} The Newton's Rings apparatus consists of a curved piece of glass held with its convex side against a flat piece of glass. The thin film of air trapped between causes interference patterns which can be changed by tightening or loosening the screws holding the apparatus together. The interference patterns are projected onto a screen by reflecting white light off of the Newton's R..." current
- 10:19, 25 April 2022 diff hist +26 X-Ray Crystallography current
- 10:19, 25 April 2022 diff hist +1 X-Ray Crystallography
- 10:18, 25 April 2022 diff hist +9 X-Ray Crystallography
- 10:18, 25 April 2022 diff hist +2 X-Ray Crystallography
- 10:17, 25 April 2022 diff hist +959 N X-Ray Crystallography Created page with "{{NewDemo|subject=Light and Optics|topic=Diffraction and Interference|file1=crystallography4.png}} Look at a diffraction pattern through a lens to reveal a new pattern! '''Location:''' * X-Ray Crystallography Kit (L-3) * Lens Holder (found in wooden Laser Optics Kit box; M3) * Lens Holder Stand (Dr. 104) * Green laser * 2 lab jacks '''Setup:''' Use the lens holder from the Laser Optics Kit to hold one of the x-ray crystallography slides. There are a lot of different p..."
- 10:15, 25 April 2022 diff hist +184 N Razor Edge Created page with "{{NewDemo|subject=Light and Optics|topic=Diffraction and Interference|file1=}} Set-up as in the Poisson's Spot demo, but shows pattern from a razor's edge. '''Location: ''' * Shelf M"
- 10:15, 25 April 2022 diff hist +572 N Poisson Spot Created page with "{{NewDemo|subject=Light and Optics|topic=Diffraction and Interference|file1=Poisson Spot.gif}} A laser beam with a beam expander attatchment is aimed at the ball bearing which is held by the lens apparatus. The interference pattern, which is now large enough to see clearly, is projected onto a screen or wall. The bright spot at the center of the pattern, Poisson's spot, is the result of light waves being bent around the ball bearing. '''Location: ''' * Laser: Shelf M-2..."
- 10:14, 25 April 2022 diff hist +10 Diffraction Grating
- 10:14, 25 April 2022 diff hist +159 N Diffraction Grating Created page with "{{NewDemo|subject=Light and Optics|topic=Diffraction and Interference|file1=}} Big ones and a classroom set of small ones are available. Location: Drawer 96"
