The moon and Earth are examples of non-luminous objects. Non-luminous objects become visible only when they reflect light produced by a luminous object. A luminous object, such as the sun, emits its own light, because it has its own source of energy.Know More
According to Penn State University's Astrology Department, the Moon has a very dark surface that only reflects about 3 percent of the sun's light. The moon's cycle is determined by the amount of light that reflects from the moon's surface in relation to its position in orbit around Earth. When only half of its surface is lit, this is called the first or third moon quarter. As Earth and the moon orbit the sun, Earth regularly blocks the moon from the sun completely; this is called a new moon. A full moon is entirely illuminated by the sun's light.
Earthshine occurs when the Earth reflects sunlight onto the moon's surface when the moon is in its crescent phase. The crescent portion is brightly lit by reflected sunlight, while the rest of the moon dimly reflects light from the Earth. As this double-reflected light travels through space, it becomes even dimmer as some of it is absorbed into Earth’s atmosphere.Learn more about Optics & Waves
Tinted windows, frosted glass, sunglasses, wax paper, fingers and certain plastics are all examples of translucent objects. Translucent is defined as a material that blurs light as it passes through.Full Answer >
A list of transparent objects contains names of objects through which light can pass completely. Such a list includes objects such as glass bottles, glass jars, pure water, clear plastic bottles, a petri dish, a concave lens, a convex lens and the pupil of the eye.Full Answer >
Mechanical motion forms through the sound waves made by vibrating massive objects. Guitar, harp or piano strings are clear examples of the principle, but horns, percussive instruments and woodwinds also create vibrations that make sound waves. Even ordinary objects create sound waves if they vibrate.Full Answer >
Transparent objects are those that allow large quantities of light to pass through; air, water and shiny glass are all examples of transparent materials. Transparent objects vary in the amount or types of light that they let through their surfaces. Glass is transparent for all visible lights; it reflects all colors of the rainbow, while other objects absorb certain colors and reflect others.Full Answer >