Smiley

A smiley face is inscribed onto a night light bulb; it's appearance is flushed out by the light of the bulb. The bulb is screwed into a light socket and placed in front of a concave mirror (not shown). The image is projected onto a note card; the image is inverted.

 

For more information about the physics of spherical mirrors and image formation, visit The Physics Classroom Tutorial - www.physicsclassroom.com/Class/refln/index.cfm.

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Taken on January 15, 2010