Garden Tips Light Intensity VS Brightness

One of the biggest causes of confusion and discord in the world of grow light is the word "brightness". The problem is that we always describe the word colloquially, as "appearance" of things to us - it's a beautiful sunny day that the bulb is a bit light, etc. It is not possible a scientific definition of intensity - the number of photons striking a given area over time - and wavelengths of light ignored that people are less sensitive.

Take, for example, X-ray light. Is this hell? Now you can not see and you would not be able to read a book with X-rays But when you consider that a very short from an X-ray machine can proceed directly to a sheet of film, where the shadows have bones in their way, you may find that the brightness and intensity are not one and the same thing after all.

Also, since LEDs accurately target the wavelengths of the two plants should not be and in fact does not seem so clear we preferred, even if they can provide a greater amount of "useful" light. This perception is reinforced by the fact that many HID light in the green / yellow part of the spectrum, which increases the intensity perceived by the human eye (as opposed to plants that we use to light around the brand 550 nm). But the fact is they lose all this extra light, as it is of little use to plants.

If we have a 400w HID Take for example, about 260 watts, is completely out of range available for photosynthesis (PAR) is at least 65% of light (and energy used to produce it) is totally lost. produced less than 40% of light HPS MH is absorbed by plants, and pay nearly 10% of the electricity you to ensure its operation while the light is converted in the first place is not very promising for the traditional lighting (on the landed value of about 4% of the energy to do something good for installation).

Some LED grow light systems be additional wavelengths to improve about the visual appearance of plants because the leaves often looks black when turned pure blue and red light. But he can not escape the fact that plants benefit from capacity with LED lights smooth balance between the blue and red vary exactly as required. This way, you can simply replace the MH lamps for rapid growth and HPS lamps later in the cycle with a unique and dynamic variable operating costs and maintenance are reduced simultaneously.