Par Meaning In Light

The term mr is usually only used for small lamps 2 inches in diameter or less. Rather it defines the type of. What do the numbers mean.

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Par is measured by the amount of micro moles of light per square meter per second.

Par meaning in light. The usual standard or condition 3. Photons at shorter wavelengths tend to be so energetic that they can be. Par is not a measurement or metric like feet inches or kilos. Color filters commonly known as gels are often placed in front of pars to modify the color of the light and due to their punch pars can produce deep saturated colors without losing as much intensity as other theatrical lighting instruments.

The number after par or mr indicates the diameter of the face of the lamp expressed in 1 8ths of an inch. The same as or equal to someone or something. A parabolic aluminized reflector lamp par lamp or simply par is a type of electric lamp that is widely used in commercial residential and transportation illumination it produces a highly directional beam. Usage includes theatrical lighting locomotive headlamps aircraft landing lights and residential and commercial recessed lights cans in the united states.

Although par is a key measurement it only tells one part of the story. Par is a much used and often misused term related to horticulture lighting. Par instruments produce a light that is commonly called punchy because it maintains its intensity well over distances. Photosynthetically active radiation often abbreviated par designates the spectral range wave band of solar radiation from 400 to 700 nanometers that photosynthetic organisms are able to use in the process of photosynthesis this spectral region corresponds more or less with the range of light visible to the human eye.

This represents the area of light that plants use for photosynthesis or to grow. These are called mr16s or mr11s. Par is essentially a measurement of light emission within the photosynthetic range of 400 700nm. Again a technique for reflecting the maximum light out the front of a halogen lamp.

Par light is the wavelengths of light within the visible range of 400 to 700 nanometers nm which drive photosynthesis figure 1.