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 »

Illuminated objects are objects the reflect light to the eye, but they do not generate their own light. There are two categories of objects that the human eye can see: illuminated objects and luminous objects. A luminous... 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 »

www.reference.com Science Physics Optics & Waves

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 »

A frame of reference is a method of describing the position, velocity and acceleration of an object. This is usually some type of coordinate system. More »

Objects appear upside down when viewed using a microscope due to the fact that many microscopes use multiple lenses; this causes rays of light to cross, which results in an inverted object. A microscope that utilizes mul... More »