1. Notes 2-5 OPTICAL TOOLS

2. Cameras: How do they work? Light from object travels through one or more convex lenses Lens focuses light Puts an image on film in back of camera

3. Cameras: What type of image is produced? Real image that is upside down

4. Cameras: Special notes: Has a device called a diaphragm with a hole called an aperture. Aperture is made smaller or larger to control amount of light Similar to how iris controls the size of pupil in your eye Digital cameras have a light sensitive screen inside camera for image to form on

5. Telescopes: How do they work? Use a combination of lenses or mirrors to collect and focus light from distant objects

6. Telescopes: What type of image is produced? Real image that is upside down

7. Telescopes: Special notes: Refracting telescopes use 2 convex lenses, an objective, and an eyepiece Reflecting telescopes use a large concave mirror, then a small plane mirror, then a convex lens in the eyepiece

8. Microscopes: How do they work? Light passes through object, then through objective lens (convex lens that magnifies), then through eyepiece (convex lens that magnifies even more)

9. Microscopes: What type of image is produced? Real image that is upside down and backwards

10. Microscopes: Special Notes: Light microscopes- what we will be using in this class Electron microscopes- uses a beam of electrons to make a magnified image of very tiny objects; VERY expensive