This activity introduces the creation of afterimages formed from a prolonged stimulation of the eye’s retina. A flashlight, paper, and tape are used to produce afterimages viewed on one’s hands and a more distant wall. ...

The activity provided on this web page offers students a chance to understand how mirrors can be used to create the appearance of defying gravity. With an easy setup, these activities can make students appear to perform...

Les Cowley, a physicist and expert in atmospheric optics, developed this website to share his knowledge about the visual spectacles produced by light connecting with water drops, dust, and ice crystals. Students can...

This collection, created and maintained by Harald Edens, contains photographs of many different atmospheric optical phenomena. Those phenomena include ice crystal halos, light scattering, and atmospheric refraction,...

This page from Hyperphysics contains images depicting the light emitted by several elements and their respective spectra. The page also provides a description of how the size of a holographic image scales with the...