(SCI) Lenses

• Concave lenses curves inward toward its center.
• An example of a use of concave lens is telescopes.
• Lateral inversion causes words to look reversed when faced in front of a mirror.
• Convex mirrors are used as side mirrors in cars and are used to magnify the image of an object.
• A car's headlight uses convex mirror.
• A concave mirror can produce real and virtual image.
• Concave lenses always form virtual images.
• A kaleidoscope is an application of multiple image reflection.
• Converging lens is used in magnifying glasses (to focus at a point behind the lens).
• The image formed by the concave side of the spoon, is upside down and bigger.
• Convex lenses are used in magnifying smaller objects, in cameras, and in microscopes.
• Concave mirror is also known as converging, meanwhile convex mirror is known as diverging.
• Reflection is the bouncing off of light rays when it hits a surface.
• INCIDENT RAY: Ray of light approaching the mirror
• REFLECTED RAY: Ray of light which leaves the mirror
• SPECULAR / REGULAR Reflection: Reflection on smooth surfaces (mirrors, or calm bodies of water)
• DIFFUSED / IRREGULAR Reflection: The light rays are scattered in all directions (ROUGH SURFACES).
• The incident rays of a CONCAVE mirror are parallel to each other, and converge at a focal point after reflection.
• The reflected rays converge at the focus behind a CONVEX mirror.