Presentation on theme: "18.3 Behavior of Light Light and Materials – How light behaves when it hits a surface depends on the material it is made of Materials can be Transparent."— Presentation transcript:
18.3 Behavior of Light Light and Materials – How light behaves when it hits a surface depends on the material it is made of Materials can be Transparent - A material that transmits (allows through) light unaffected Translucent - A material that transmits light but scatters it into different directions Opaque – A material that does not transmit any light. Light is either absorbed, reflected, or both.
18.3 Behavior of Light Interactions of Light – When light strikes a new medium there are three possible outcomes I Reflection II Absorption III Transmission
Reflection - Light bouncing off an object to form an image. We depend on reflection to see. Regular reflection – light bounces off an object in the same direction to from a reflected image Diffuse reflection – light bounces off an object in different directions no reflected image formed
NOTE: Absorption of light produces the colors we see. Only the color reflected reaches our eyes
When light is transmitted there are three possible outcomes I Refraction – Bending of light as it enters a new medium (Chapter 17) II Polarization – Occurs when light waves vibrate in only one plane. III Scattering – Light waves are bent as it diffracts around tiny particles in the atmosphere