Reflection

• Light stimulates sight and makes objects visible to human eyes.
• Illuminated objects are objects that can be seen because they reflect light waves
• Luminous objects emit or give off their own light because of the energy of their oscillating particles
• Light behaves differently in different materials Different types of materials have different effects on light
• Transparent objects – allow light to pass through clearly
• Translucent objects – allow some light to pass through resulting in fuzzy or blurry images formed.
• Opaque objects – do not allow light to pass through, they only absorb and reflect some light.
• REFLECTION OF LIGHT Bouncing of light off a surface
• Regular/Specular Reflection that occurs from smooth surfaces.
• Diffuse Reflection which happens from rough surfaces.
• Both luminous and illuminated objects emit/reflect light in many directions.
• Your eye sees only the very small diverging cone of rays that is coming toward it.
• Incident Ray – leaves the object and strikes the mirror.
• Reflected Ray – leaves the mirror and strikes your eye.
• The reflected ray is on the line of sight from the image to your eye.
• Normal – line perpendicular to the mirror surface.
• Angle of incidence – the angle between the incident ray and normal.
• Angle of reflection – the angle between the reflected ray and normal.
• The angle of incidence equals the angle of reflection.
• A concave mirror is silvered on the inside of the sphere.
• A concave mirror is also called a converging mirror because it converges parallel light.
• A convex mirror is silvered on the outside of the bowl.
• A convex mirror is also called a diverging mirror because it diverges parallel light.