Chapter 30 Hewitt Presentation

10. Summary of the Characteristics of Images in a Convex Lens

13. The Parts of a Camera EXTERNAL INTERNAL Camera Body Film Swinging Mirror Viewing Lens Image Bearing Light Picture Taking Lens

14. The Basics of Photography No light is allowed into the camera, except for when the button is pushed. The aperture is located in the lens compartment. Its purpose is to control the amount of light that reaches the film. If either of these two devices doesn’t work properly, the picture will not come out looking as it should. LIGHT The most important aspect of photography is . The and the are the two parts of the camera that regulate the light that enters the camera. SHUTTER APERTURE The shutter is located in the camera box. It regulates the amount of light by allowing it to pass through for a certain amount of . TIME

17. OBJECTIVE LENS: EYEPIECE LENS: The first lens in a refracting telescope that light from a celestial object passes though. The light will then be inverted at the focal plane. The second lens, located behind the focal plane, which allows the observer to view the enlarged or magnified image. focal plane The simple refractor

18. A refracting telescope's light gathering power is proportional to the size of the objective lens and to the ratio of the focal lengths of the objective lens and the eyepiece.

21. The Human Eye Components Though the eye looks simple, it is a complex organ made up of many parts. Each part is needed to make the eye function as a mini camera relaying images to the brain. The main components of the eye will be described in greater detail in the following slides.