Science · Topic 51 of 64
Lenses
⭐ MasteredA lens is a piece of clear glass or plastic that bends light to make things look bigger or smaller. Magnifying glasses and eyeglasses both use lenses.
💡 Fun fact
Some lenses in telescopes can gather enough light to see stars billions of light-years away.
All about Lenses
A lens is a curved piece of clear material that bends light through refraction. Convex lenses bring light together, while concave lenses spread it out.
Magnifying glasses, eyeglasses, cameras and telescopes all use lenses to control light.
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Real-life uses of Lenses
- Correcting vision with eyeglasses
- Magnifying small objects for study
- Focusing light in cameras and telescopes
Frequently asked questions about Lenses
What does a convex lens do?
It brings light rays together to a focus.
What tools use lenses?
Cameras, telescopes, microscopes and eyeglasses all use lenses.