Figure 10.7 A lightbult, turned on.
10fig07.wrl	Click on the image to view the VRML scene.

#VRML V2.0 utf8
# The VRML 2.0 Sourcebook
# Copyright (c) 1997
# Andrea L. Ames, David R. Nadeau, and John L. Moreland
Group {
    children [
    # Dark gray light bulb hanging wire
        Shape {
            appearance Appearance {
                material Material {
                    diffuseColor 0.4 0.4 0.4
                }
            }
            geometry Cylinder {
                radius 0.05
                height 2.0
            }
        },
    # Yellowish light bulb socket
        Transform {
            translation 0.0 -1.0 0.0
            children Shape {
                appearance Appearance {
                    material Material {
                    diffuseColor 1.0 1.0 0.4
                    }
                }
                geometry Sphere { radius 0.5 }
            }
        },
        Transform {
            translation 0.0 -1.5 0.0
            children Shape {
                appearance Appearance {
                    material Material {
                        diffuseColor 1.0 1.0 0.4
                    }
                }
                geometry Cylinder {
                    radius 0.5
                    height 1.0
                }
            }
        },
    # White light bulb
        Transform {
            translation 0.0 -2.95 0.0
            children Shape {
                appearance Appearance {
                    material Material {
                        diffuseColor  1.0 1.0 1.0
                        emissiveColor 1.0 1.0 1.0
                    }
                }
                geometry Sphere { }
            }
        }
    ]
}