A detailed description of how lenses work. Video courtesy of kridnix.
Reviews what a lens is, how it focuses light, and the differences between convex and concave lenses.
Learn about the eye disease called macular degeneration and the telescopic contact lenses that have been developed to correct it.
How to make your own projector using convex lenses.
An interactive activity about lenses that shows you how an image changes when you move and change the object.
These flashcards are here to help you better understand middle school physical science.