F11Physics1CLec26A

# F11Physics1CLec26A - Physics 1C Lecture 26A "If Dracula...

This preview shows pages 1–7. Sign up to view the full content.

Physics 1C Lecture 26A "If Dracula can’t see his reflection in the mirror, how come his hair is always so neatly combed?" --Steven Wright

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Announcements Today discuss mirrors and lenses Magnification Focal length Mirror equation
Mirrors and Lenses As we have noted before, light rays can be diverted by optical systems to fool your eye into thinking an object is somewhere that it is not. The simplest optical systems are mirrors and lenses. Mirrors and lenses will divert light rays from an object source and create an image. Mirrors use reflection of light to divert the light rays. Lenses use refraction of light to divert the light rays.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Mirrors and Lenses Images are formed at the point where rays actually intersect or appear to originate. There are two types of images: real and virtual . A real image is one in which light actually passes through the image point. Real images can be displayed on a screen. A virtual image is one in which the light does not pass through the image point. The light appears to diverge from that point. Virtual images cannot be displayed on screens.
Mirrors and Lenses For both mirrors and lenses: The object distance , p , is the distance from the object to the mirror or lens. The image distance , q , is the distance from the image to the mirror or lens. The lateral magnification , M , of the mirror or lens is the ratio of the image height to the object height . To find where an image is formed it is always necessary to follow at least two rays of light as they reflect from the mirror or refract through the lens.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Mirrors The simplest possible mirror is the
This is the end of the preview. Sign up to access the rest of the document.

## This note was uploaded on 12/11/2011 for the course PHYS 1C taught by Professor Smith during the Fall '07 term at UCSD.

### Page1 / 23

F11Physics1CLec26A - Physics 1C Lecture 26A "If Dracula...

This preview shows document pages 1 - 7. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online