Tova, some se Narica Illuminators
Lightening is an important characteristic, which affects the level of comfort, performance and health. In order to organize the correct clarification of the flock, it is necessary to clearly understand what is the same characteristic. In the article, we will analyze how lightening is and how it depends.
containment: 1. Definition and measurement unit 2. How can we calculate the luminosity, for we know the light stream 3. Inverse square law in lightening
Definition and measurement unit
The definition of clarification is the amount of light, equal to the ratio of that to the flow of light, falling at the top, the area from the surface is determined, the area of the area on the back of the region:
Tazi stability showing sharply strongly illuminated object. The cost is measured in Lux (Lux in SI). Tova depends not only on the strength of the light stream (measured in lumen (lm)) and the surface, the top of the fall, but also on the distance from the source to the surface and the light on the padan on the light line of the light above it:
Kadeto:
- IV e light intensity per candela (1 candela = 10.7 lumens);
- r is the distance to the light source;
- i e gult on the padan on the bright light beams.
More details for the concept for illuminance and neinat vrazka with other physical quantities, you can and intend to state "In what units are the measurements of illuminance and brightness per light - how does the apartment represent“.
How and how can we measure
For measurements on the pelvis, this characteristic is used by a special device - luxometry. They all consist of a photosensor and an electronic device that somehow converts the signal from the sensor into packets, which are shown on the display.
Measuring for illumination at the work area with the help of a lux meter
Depending on the type of clarification (artificially from one or another type, naturally, combined - naturally + artificially), which device is connected to the photo sensor, the desired type is configured.
An example for an interesting device for changing the parameter for clarification is Radex Lupin. Struva $75. There are a lot of goods, but the price is justified from the characteristics. You can measure the illumination, brightness and ratio on the pulsation. The last parameter is not measured by any device. Ako tova e skopo for you, togava you can use the Chinese luxury, chiyato the price of the soil is from 15-20 dollars.
How can you calculate this lightening, know the stream of light
Almost all the flasks, with an exception on the lamp with a burnt flask, showing a bright stream, which is good.
Tazi LED lamp manufactured 450 lumena svetlina
How can you figure out what kind of light is being sent? Theoretically, if a light stream falls on a surface with an area of 1 m2, then the light intensity is still 450 lux.
Ako illuminating 1 m2 with one lumen, illuminating on a surface even 1 lux
But not everything is sensible simply. First, the crumbs shine under different angles. From tov depend on the area for clarification. Secondly, the size on the light-line depends on the distance to the surface and from the angle on the padan to the light beam.
Approximately the illuminance on the surface is calculated from the last beginnings: we know how to calculate the dispersion on the lamp and the distance from the source to the surface, at the top of the fall the whole stream is light, estimating the area on the bright spot.Let’s leave and divide the stability into a light stream into areas on a light-colored surface and turn the illumination into a surface, at the top of a light fall. Obviously, the stream is bright in a high-pitched way and the stream is high-pitched in a little light-smooth fashion, sensible in a high-light way.
Nyama and davame formulas - theses, which they taught at the school, they can and will calculate the area based on the cone on the glare on it, it is ready to boil (the distance is from the source to the light on the surface). E, the possible light flow is divided into a dory zone with three enorian classes.
Compute the method for calculating giving approximate results. Ako look for and calculate exactly the lightening in one flock, you can yes you will find a statiyata "How can we calculate the lightening in flocks“.
Inverse square law in lightening
Somehow it is more whitened in a mountain, the illumination depends on the distance from the source to the light. Vz is based on the formula, which we will give again, and the dependence is quadratic.
All the same, some lawsuit, but you know more about the topic on the tazi, maybe yes, you can see the object, give it to the text.
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