Geometric Optics

Warm-Up!!!

Let's review the vocab we've learned over the past couple days as we get settled in for our lesson.
Check the chat for a link to a Quizlet - you choose how to review.

Object & Image size?

Object & Image distance?

Image Orientation?

Real or Virtual?

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Mirrors & Lenses work via reflection & refraction

​Recall the plane mirror:

Tell me all about plane mirrors on the Jamboard!

Plane Mirror Description - Google Jamboard

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• What each device does depends on its shape and the location of the object.

• We draw three rays, following a specific set of rules for mirrors, and a specific set of rules for lenses.

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Ray Diagrams help us understand how optical devices create images

​Main Application: Focusing Light

• Headlights

• Flashlights

• Microscopes

​Main Application:
Shaving / Cosmetics Mirrors

​Main Application: Spreading Light

• Automobile mirrors

• Street lamps

Geometric Optics - YouTube

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​Main Application: Magnification

• Magnifying glass

• Glasses for farsightedness

​Main Application: Spreading Light

• Glasses for nearsightedness

• Flashlights

• Peepholes

Geometric Optics - YouTube

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Home

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Open Ended

Based on what you've learned today, make three inferences about how the location of an object in front of a mirror or lens determines its image qualities (magnification, upright or inverted, real or virtual).

Next time, we will apply what we've learned about ray diagrams to describe images quantitatively,

using the Thin Lens Equation.