A luminous object is one that can create its own light, powered by an internal energy source. Luminous objects tend to generate heat due to the light they emit. More »

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Some examples of luminous objects are a burning candle, a light bulb, the sun and other stars, fluorescent materials and tube lights, among other things. Any object is considered luminous if it emits its own light, eithe... More »

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 ... More »

Sound waves occur when an object vibrates and transfers that energy into the air or another medium. When a vibrating object moves forward, it compresses the air molecules in front of it, and when it moves backward, it le... More »

Wien’s law, also known as the displacement law, reveals the wavelength at which any object emits the majority of its energy. The formula used to calculate the wavelengths using Wien’s law is λmax (wavelength) equals 3 x ... More »

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Shadows are created when an object, animal or person blocks out a portion of a light source. Shadows form in the opposite direction of whatever is blocking that source. For example, if the sun is shining to the right of ... More »

A common example of diffraction of light is looking at an object that is partially immersed in water, where the object appears to be in a different place. Sound diffraction is usually not visible, but it is audible throu... More »