Principles of Optics Crossword Puzzle

QUESTIONS LIST:

• optics: the branch of physical science that deals with the properties of light and vision
• physical optics: describe the nature of light in terms of its wave properties
• geometric optics: deals with the transmission of light as rays and is concerned with the effect of lenses on light and the production of images
• opaque: substances that block light completely
• translucent: substances that transmit light but significantly interfere with its passage
• transparent: substances that permit the passage of light without significant disruption
• refractive index: the ratio of the speed of light in a vacuum to its speed through a specific substance
• prism: a triangular piece of glass or plastic with plane (flat) sides, an apex (top), and a base (bottom)
• converge: to come together
• diverge: to spread apart
• convex lens: a piece of glass or plastic in which one or both surfaces are curved outward; thicker at the center and thinner at its end
• concave lens: a piece of glass or plastic in which one or both surfaces curve inward; thinner at the center and thicker at its end
• parallel: refers to rays that travel side by side in the same direction, neither diverging or converging
• focal point: a point somewhere along the principal axis from a distant source that is refracted by a lens and converges in the case of a convex lens and diverges in the case of a concave lens
• vergence: a measure of the ability to converge or diverge light ray
• focal length: the distance between the focal point and the lens
• diopters: the unit of measure of the power of the lens
• virtual image: the image formed by a concave lens when the par-axial rays from a distant source are refracted and diverge
• paraxial rays: light rays that enter a lens system away from the center