1. L ET THE LIGHT SHINE Sources of Light Luminous Produces light Incandescent Light due to high temperatures Electromagnetic Spectrum A range of electromagnetic radiation ranging from very short wavelengths to very long wavelengths Long waves Short waves Low energy High energy Radio Visible X-rays

2. L ET THE LIGHT SHINE Remember this from the well know Physicist: Roy G. Biv Colors of the spectrum Red Orange Yellow Green Blue Indigo Violet Red = Short word = Long wave Violet = Long word = Short wave

3. L ET THE LIGHT SHINE Path of light Always in a straight line Why can we see when in the shade of a tree ???? Transparent Light passes through Opaque Reflects & absorbs light Translucent Light can pass through Speed of Light 186,000 mi./sec.

4. L ET THE LIGHT SHINE Reflection & Refraction: Which is which Law of Reflection & Refraction Angle of incidence is equal to the angle of.... Reflection We see something because light “bounces” reflects off of the object Reflecting surfaces Concave (in) Convex (out) First surface mirror

5. L ET THE LIGHT SHINE Refraction Light passing through but is bent as it passes through the medium Refraction is due to a change in the velocity of light Chromatic aberration

6. L ET THE LIGHT SHINE A System of Lenses Camera and The Eye The Rainbow Conditions A process of refraction & reflection Greenhouse Effect