4:14pm Gorkius SA According to the inverse square law of distance, the light intensity is inversely proportional to the square of the distance from the emission point. This means that with increasing distance the lamp plant the intensity of light greatly reduced, so that twice the distance reaches the quarter light. This law is summed up in the following formula: I = L / D2, where I is the intensity of light emitted L the lamp and the distance D to the plants. Given this law, how much light finally reached when plants using a reflector? Half of the light emitted by the lamp, which leaves from the bulb down goes directly to plants which are, for example, 30 centimeters. Other half goes upward and must bounce off the reflector before starting route towards plants, ie addition 30 inches should tour other 30 more, return to the reflector. Fifty percent of the light emitted the bulb, leaving the entire direction the reflector, must travel twice distance to reach the plants and, therefore remains at 12.5% (50:4 = 12.5). This is ie plants directly receive one 50 percent of the light, which was emitted downward, and 12.5 percent light bounced, totaling 62.5 percent of the light emitted by the bulb. Only two thirds! In short: if you place the bulb in horizontal position and reflector, is lost a third of the lumens. These figures are indicative and depend on accurate data largely on the characteristics of each reflector, but even with the most advanced, the percentage of wasted light is remarkable. Of the 90,000 lumens which gives a 600w HPS lamp, the plants are only receiving about 60,000. Changing the vertical culture can enjoy the 90,000, 50 percent more, without spending more and saving electricity the reflector. What can you do to not wasting light? The most effective is to use all the light directly, without having to bounce anywhere. Instead of direct the light to where the plants must place plants where light. There are many different techniques to grow with bare bulbs vertically, but all agree on one aspect, the plants are not located under lamps surrounding it, taking advantage light emitted at 360. In this position high lamps pressure emit practically all light sideways, a small part almost nothing down and up, by what plants should be located around the bulb and the distance ideal for making light at its best intensity, but without burning by heat. say what you will according to professional growers around the world it makes no difference PPP
Posted on: Wed, 03 Jul 2013 23:45:29 +0000
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