College Physics

Figure 25.17(a) Astronauts placed a corner reflector on the moon to measure its gradually increasing orbital distance. (credit: ...

Figure 25.19Light cannot easily escape a diamond, because its critical angle with air is so small. Most reflections are total, a ...

Dispersion Dispersion is defined to be the spreading of white light into its full spectrum of wavelengths. Figure 25.22Even thou ...

Figure 25.23(a) A pure wavelength of light falls onto a prism and is refracted at both surfaces. (b) White light is dispersed by ...

Figure 25.25(a) Different colors emerge in different directions, and so you must look at different locations to see the various ...

Figure 25.26 Geometric Optics (http://cnx.org/content/m42466/1.5/geometric-optics_en.jar) 25.6 Image Formation by Lenses Lenses ...

Figure 25.28Sunlight focused by a converging magnifying glass can burn paper. Light rays from the sun are nearly parallel and cr ...

a diverging lens are defined to be negative. For example, if the distance toFinFigure 25.29is 5.00 cm, then the focal length isf ...

Figure 25.31Thin lenses have the same focal length on either side. (a) Parallel light rays entering a converging lens from the r ...

Image Formation by Thin Lenses In some circumstances, a lens forms an obvious image, such as when a movie projector casts an ima ...

Figure 25.34Real images can be projected. (a) A real image of the person is projected onto film. (b) The converging nature of th ...

Figure 25.35A light bulb placed 0.750 m from a lens having a 0.500 m focal length produces a real image on a poster board as dis ...

A different type of image is formed when an object, such as a person's face, is held close to a convex lens. The image is uprigh ...

Figure 25.37Ray tracing predicts the image location and size for an object held closer to a converging lens than its focal lengt ...

Discussion A number of results in this example are true of all case 2 images, as well as being consistent withFigure 25.37. Magn ...

Solution To find the magnificationm, we must first find the image distancediusing thin lens equation 1 (25.39) di =^1 f −^1 do , ...

Step 2. Determine whether ray tracing, the thin lens equations, or both are to be employed. A sketch is very useful even if ray ...

Figure 25.41(a) Parallel rays reflected from a large spherical mirror do not all cross at a common point. (b) If a spherical mir ...

A ray approaching a convex diverging mirror by heading toward its focal point on the opposite side is reflected parallel to the ...

image significantly farther away. As the object gets closer to the focal distance, the image gets farther away. In fact, as the ...