This web page allows you to convert the different light intensity units and answers the following questions in particular: What are some of the historical ways in which light intensity has been measured? What are some examples of units used to measure light intensity? How can light intensity be converted from one unit to another? What are some interesting facts about the relationship between different measurements of light intensity? What are some practical applications for measuring light intensity?
Light intensity has been measured and used in different ways since the beginning of recorded history. In ancient Egypt, candles were used to measure illumines, while in Medieval Europe, people used tiny pieces of wood called “parters” to measure brightness. In the modern era, intensity measurements of light were refined through different units of measure, including lumens, foot-candles, lux, candelas, and lamberts.
These units are used for measuring and comparing light intensity for different types of applications. For example, illuminance or lux measurements can be used when evaluating lighting needs for homes or businesses. Similarly, candelas and lamberts can be used to measure the level of brightness for television screens or other displays.
The following are examples of reference or record values measured in different units of light intensity:
Light intensity can be converted from one unit to another by using a simple equation. For example, lux can be converted to foot-candles by multiplying it by 0.09290304. Similarly, Lumens can be converted to candelas by multiplying it by the angular size of the luminous flux in steradians. Other conversions require the use of complex algorithms, such as those used to convert lumens to lamberts.
Light intensity can be measured in several different ways, and each of these measurements are related in different ways. For example, a higher lumen measurement typically translates to a higher lux measurement. Additionally, the brightness level of an object may be related to its luminous intensity, but not necessarily its luminance, as the brightness depends on several other factors such as distance and ambient light.
Light intensity measurements are used for several different purposes, including illumination and display brightness measurements, light analysis for industrial and research applications, and even for general interest purposes. For example, an enthusiast astronomer may use a light meter to measure the strength or intensity of the moonlight in order to capture clearer images of the night sky. Similarly, an industrial engineer may use lux measurements to analyze the illumination of a warehouse and adjust the necessary lighting fixtures.