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Concave and Convex Mirrors and Lenses
Transcript of Concave and Convex Mirrors and Lenses
and EmmaJane Naegeli We see our toes above our head Reflect right side up image Lenses Thinner in the middle than at the edges Optical Axis Straight line coming directly out of the center of the spoon Focal Point Light rays are reflected through the focal point (intersecting point) Concave and Convex
Properties Concave Mirror Convex Mirror Concave Lenses Concave and Convex Mirrors and Lenses Any Ideas? Concave:
A mirror that is curved inward like the inside of a spoon Convex:
A mirror that is curved outward like the back of a spoon Focal Length The distance between mirror surface and focal point When you place an object directly on spoon, the object will not invert
When you draw the object further away, it will invert
Used in flashlights Convex mirrors allow to see more compared to normal mirror Often used for security cameras or side mirrors on cars and trucks Lenses can also change the way an image is projected
A lens is a transparent object that changes the direction and properties of the light waves when they are passed through it
Concave and Convex Form smaller and clarified images Often work together with convex lenses to create a perfect image Convex Lenses Thicker in the middle and thinner towards edges Makes images appear larger than they actually are Used in magnifying glasses, cameras, and eyeglasses. Light rays are refracted toward the center of the object. Ray Diagram: Concave mirror example:
further away: inverted
closer up: zoom Plain Mirror:
Reflect exact image