Introduction to Optics

What is Optics?  that branch of physical science which deals with the nature and properties of light, the laws of its modification by opaque and transparent bodies, and the phenomena of vision Webster’s Dictionary Illusion Effect The Power of Optics

What I know about optics…  in point form write down a list of "facts" to demonstrate your current knowledge of optics  you have 3 minutes to complete this quietly on your own

What I know about optics once I talk to others…  walk around the room and talk to others  share your knowledge with others  in point form write down a list of "facts" about optics that you have learned from others  you have 3 minutes to complete this activity

What I want to know about optics…  in point form write down a list of questions you would like to have answered about optics  you have 3 minutes to complete this activity

The Science of Light Video

Sources of Light  Can you provide an example of a light source?

“Classifying Sources of Light” Consider 15 sources of light listed on the next slide Your group will classify the items based upon certain characteristics or criteria. Look at all of the items on the list. Discuss ways to classify the items. You must use a minimum of two groups or categories. Choose the categories you wish to use. Create the required number of columns on a separate piece of paper. Put a heading on each column to identify the categories. Copy each item on the list into the correct column.

“Classifying Sources of Light” Think of additional light sources (not found on the list below) and add these items to your classification groups, using a different coloured marker. Present your classification charts to the class.

LIST OF LIGHT SOURCES a light bulb a campfire the sun a forest fire a flashlight stars a glow in the dark sticker headlights on a car a firefly the northern lights fireworks a lit candle propane barbeque flames a glow in the dark tube necklace a fluorescent light tube

Classifying Sources of Light Activity  NATURAL LIGHT  light which occurs without human intervention as a result of a natural process  ARTIFICIAL LIGHT  light which can only occur because of human invention (technology)

LIST OF LIGHT SOURCES a light bulb a campfire the sun a forest fire a flashlight stars a glow in the dark sticker headlights on a car a firefly the northern lights fireworks a lit candle propane barbeque flames a glow in the dark tube necklace a fluorescent light tube What sources of light did your group add?

Homework  between now and tomorrow, start paying attention to LIGHT in your everyday life  describe three different events when you encountered natural light  describe three different events when you encountered artificial light