1Demo:

Print:Supplies:

Warm-Up Exercise What is optics? Is it possible to emit light without heat? How many different types of light can you

think of?

Agenda

Final Clicker-Quiz Introduction to

Sound EMR Optics

Classwork

What is optics?

The Science that deals with the properties of both visible and invisible light and with vision.

How many technologies can you think of that use radiation?

Uses for radiation

Television Radiation therapy Microwave MRI X-rays Cell phones Tanning beds Fiber-optics Microscopes Lasers CD/DVD players/Blu-ray

players Photon cannon Photo radar

WIFI Radios Photocopier UV food treatment R I’s Mirror Blue-tooth Satellites/radar Nuclear Radiation NMR Camera/video Ovens Night vision

Light Transmittance Light is transmitted in the form of

electromagnetic radiation. (EMR)

Now you see himNow you don’t

Why?

An overview in lighting

•Light that is emitted from an object because it is hot

Incandescence

•Fluorescence

•Phosphorescence

•Chemoluminescence

•Bioluminescence

Luminescence (light without

heat)

Light Interaction-Ray Matter of Light

Transparent Translucent Opaque

Transparent Something that transmits light freely

Ex. Clear glass or plastic

Translucent

Something that transmits some light but not enough to see through the material clearly Ex. Frosted window pane

Opaque

Something that absorbs and reflects light but doesn’t transmit it Ex. Everything else!

Shadows

Umbra• blackest part of the shadow-all light is cut off

Penumbra• partial shadow around an umbra

• i.e: An eclipse

Light Reflection

Regular• Light rays hit a

smooth surface and reflect parallel to each other

Diffuse• Light rays hit a rough

surface and scatter in different directions

Create a reflection using light in the classroom…

Homework

Pg. 409 # 1, 3, 5, 6, 9, 15