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Amith2006
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Does the luminous intensity due to an isotropic point source of light at a point on a surface depend on the angle it makes with the normal to the surface?
Luminous intensity refers to the amount of visible light emitted from a light source in a particular direction. An isotropic point source of light is a theoretical point in space that emits light evenly in all directions.
Luminous intensity is measured in units called candelas (cd), which is defined as the amount of light emitted in a specific direction by a light source with a power of one candela. This unit is commonly used to measure the brightness of light bulbs and other light sources.
The luminous intensity of a light source can be affected by several factors, including the power or wattage of the light source, the size and shape of the light source, the color temperature of the light, and the type of light source (e.g. incandescent, fluorescent, LED).
Luminous intensity measurements are commonly used in the lighting industry to determine the brightness and efficiency of light sources. They are also important in fields such as photography, astronomy, and vision science.
The luminous intensity of a light source is directly related to its perceived brightness. However, the perceived brightness may also be affected by other factors such as the distance from the light source, the reflectance of the surrounding surfaces, and the sensitivity of the human eye.