Optics



# Thumbnail Name Description
6A02.15 Click for full description Silhouette Shadows Demonstrates an umbra and penumbra using both point and extended sources.
6A02.35 Click for full description Laser and Chalk Dust This demo shows the linear nature of a laser beam by clapping a blackboard eraser near it. This can also be done with a can of compressed air or water mist.
6A10.10 Click for full description Blackboard optics - plane mirror This demonstration uses the plane mirror from the blackboard optics set to show how light reflects off a plane mirror.
6A10.15 Click for full description Laser and Flat Mirror This demonstration shows that the angle of incidence is equal to the angle of reflection.
6A10.20 Click for full description Diffuse vs Specular Reflection This demonstration illustrates the difference between Diffuse and Specular reflection.
6A10.30 Click for full description Corner Cube Shows how 3 mirror retroreflectors work.
6A10.42 Click for full description Kaleidoscope This demo uses three large mirrors which serve to model a kaleidoscope.
6A20.10 Click for full description Blackboard optics - curved mirrors Using the convex and concave mirrors in the blackboard optics set, you can show how light is reflected. A discussion on focal points, radius of curvature, and virtual and real images can accompany this demonstration.
6A20.30 Click for full description Light Bulb Illusion A concave mirror is used to project a real image of a light bulb onto an empty socket. Empty glass frames can be setup to help students position their heads. Just have them look though the glasses.
6A20.35 Click for full description Optical Mirage (bug mirror) This mirage uses two concave mirrors to project an image of the bug in the opening.
6A20.45 Click for full description Large convex and concave mirrors This demonstration illustrates the images formed by convex and concave mirrors.
6A20.60 Click for full description Energy at the focal point (ignite gun cotton) This demonstration visually shows that a mirror can focus Infrared waves at the focal point.
6A40.30a Click for full description Disappearing crystals This demonstration shows what happens to an object (with index of refraction equal to water) when it is placed in water.
6A40.30b Click for full description Disappearing Beaker This demonstration shows that an object with the same index of refraction as a liquid will look transparent when immersed in it.
6A40.70 Click for full description Beer Mug Refraction This demonstrates refraction at an air/water surface. Reveals the tricks of bartenders.
6A42.10 Click for full description Blackboard optics - refraction Using the plastic cubes in the blackboard optics set, you can show how light refracts off objects with diffrent indexes of refraction.
6A42.20 Click for full description Refraction Tank and Laser This demonstration shows what happens to laser light when it encounters an air-water surface.
6A42.45 Click for full description Stick in Water This demonstration shows the refraction of light from water to air. When viewed at diffrent angles, it looks like the top part of the stick is detached from the bottom.
6A44.10 Click for full description Blackboard Optics - Total Internal Reflection Using the blackboard optics set, you can show the effects of total internal refelection using different shaped blocks (rectangle, prism, etc).
6A44.20 Click for full description Critical Angle With a small tank of water, you can use a laser beam to show the critical angle.
6A44.40 Click for full description Laser and Fiber Optics These fiber optic devices show how we can exploit total internal reflection to transfer light across great distances, and even in non linear paths.
6A44.45 Click for full description Laser Waterfall This demonstration shows total internal reflection through a stream of water.
6A46.10 Click for full description Rainbow from Spherical Flask Demonstrates the optics of a raindrop and the concentration of light at particular angles.
6A60.10 Click for full description Blackboard optics - lenses This demonstration shows how a concave and convex lens works.
6A60.30 Click for full description Projected Filament with Lens This demo projects the filament of a light bulb onto the screen using a plano convex lens.
6A60.31 Click for full description Projected Arrow with Lens This demonstration uses an optical bench with two arrows as the light source. Using different lenses you can illustrate lens optics.
6A61.20 Click for full description Pinhole Camera This demonstration (often referred to as the reverse pinhole camera) uses a light bulb inside a box with letters on it. By varying the aperture, you can show students how the aperture changes the focus of the letters. A discussion of how this ties in with the aperture of a camera lense can accompany this demonstration.
6A65.70 Click for full description Frensel lens This is a very big frensel lens. We also have two small frensel lenses.
6A70.31 Click for full description Cameras We have several various cameras, including digital, instant polaroid, and an old film camera to be used as a prop.
6B10.30 Click for full description Paraffin block photometer This device can be used as a light intensity meter. You can use this to compare the intensity of two light sources and view how light intensity depends on distance.
6B30.10 Click for full description Radiometer This is a small radiometer.
6B40.10 Click for full description Light on a Variac (Black body radiation) Use to show that radiated color changes with temperature.
6C10.10 Click for full description Single Slit and Laser This demonstration shows the diffraction pattern of laser light passing through a single slit.
6C10.15 Click for full description Adjustable Slit and Laser Using a variable width slit, you can show what happens to the diffraction pattern when the slit size is varied.
6C20.10 Click for full description Laser and Diffraction (Poisson's Bright Spot) This demo shows that laser light can diffract around an object such as a razor blade or pin head.
6C20.20 Click for full description Thin Wire Diffraction (strand of hair) A narrow opaque object will create a diffraction pattern that may be used to measure the width of the object. The diffraction pattern is like that of a narrow slit, with the width of the object replacing the slit width. You can try this with a fine wire or strand of your hair.
6D10.10 Click for full description Double Slit and Laser This demonstration shows the double slit interference pattern for laser light. Use diffrent slit widths and diffrent slit separations and observe the diffrent interference patterns.
6D20.10 Click for full description Multiple Slits and Laser This demonstration uses a slide with varing number of slits (between 2 and 5). Observe how the pattern changes with increasing number of slits. This demonstration can lead into diffraction gratings.
6D20.15 Click for full description Diffraction Gratings and Laser This demonstration shows what happens to laser light that passes through a diffraction grating.
6D20.32 Click for full description Compact Disk Diffraction and Laser Demonstrate that a Compact disk can act as a diffraction grating.
6D20.50 Click for full description Crossed Gratings and Laser Show the pattern of a crossed grating using laser light.
6D30.10 Click for full description Newtons Rings This shows interference patterns from a thin air gap between glass. The knobs on the side can be used to vary the air separation at that location.
6D30.20 Click for full description Thin Film interference (soap film) This demonstration shows the interference effects of thin films. If the film survies to a point where it is less then 1/4 of a wavelength of light, no light will be reflected which is characterized by a black part (see picture).
6F10.10 Click for full description Addition of Primary Colors This demonstration shows the addition of the primary colors (red, green, and blue).
6F10.20 Click for full description Color Filters These filters can be used to show the addition and subtraction of colors.
6F10.55 Click for full description Band Absorption Spectra This demonstration shows how some materials absorb certain wavelengths of light. The Didymium glass can be used as well as the roscolux filters.
6F30.10 Click for full description Dispersion curve of a prism (chromatic dispersion) Using a focused white light souce and a prism, a visible light spectrum is projected.
6F40.10 Click for full description Blue Sky Red Sunset This demonstration illustrates the effects of light scattering in water (similar to the atmosphere).
6H10.10 Click for full description Polaroids on the Overhead This demonstration shows students what happens to the light intensity when one polaroid sheet is put on the overhead. It also shows them what happens when another sheet is placed on top of the first. Depending on the orientation with respect to the first, the intensity will vary.
6H30.10 Click for full description Three Polaroids on the Overhead A continuation of 6H30.10 (Polaroids on the Overhead), this demonstraion shows what happens when a third polaroid is placed inbetween the first two. If the first two were oriented so that almost no light was passing through, and the third was put inbetween at a 45 angle, some light will pass through. This is counter intutive for most students.
6H35.50 Click for full description Stress Plastics (birefringence) This demonstrates the stress pattern in diffrent plastic shapes using polarized light (example of birefringence).
6H50.10 Click for full description Polarization by Scattering (using blue sky red sunset demo) This demonstration shows that scattering of unpolarized white light becomes polarized.
6J12.10 Click for full description Stereograms These are three stereogram books with stereographic glasses. One book is of rocks, and the other two are of aerial photographs.
6J12.11 Click for full description Kids Stereogram This is a kids stereogram with matching sesame street disk.
6Q10.10 Click for full description Holograms This demonstration shows students what a Hologram is and how it works.