LED Plant Grow Lights

Effects of light of various wavelengths on plants Visible light wavelength (4*10-7m----7*10-7m) Light color --------- wavelength λ (nm) --------- represents the wavelength Red-----780~630----------700 Orange--630~600----------620 Yellow--600-570----------580 Green--570~500----------550 Qing---400~470----------500 Blue---470~420----------470 Purple--420~380----------420 In order to study the color properties of light, the visible spectrum is enclosed into a circle and divided into nine regions, called color rings. The number on the color ring indicates the wavelength of the corresponding color light, the unit is nanometer, and the color in the fan shape of any two opposite positions on the color ring is called complementary color. For example, the complementary color of blue (435~480nm) is yellow (580~595nm). It has been found through research that the color light also has the following characteristics: (1) The complementary colors are mixed in a certain ratio to obtain ...

Recently, in addition to the requirements of small and thin, energy-saving, and low-noise, electronic equipment is expected to meet the ecological needs of the global warming. Under such market demand, the LED bulbs that have been popular since 2009 have become small and thin, and have achieved high eco-friendship due to their long service life. The electronic components mounted on them are also required to be small and thin. It has a long service life. LED bulbs are equipped with a small power supply with a power of about 10W, mainly using electrolytic capacitors and film capacitors to achieve a smooth function, but the use of small and longer-life ceramic capacitors is also increasing. Ceramic capacitors with higher electrostatic capacity than conventional ceramic materials, this paper will introduce its characteristics, and introduce the recommended circuit for power supply of other electronic devices based on LED bulbs. New material ceramic capacitor performance The proper...

The good habit of raising fish is to check the water temperature every morning and evening, to observe whether the water temperature is constant, and whether the work of the constant temperature heater and the oxygenator is normal. Observe the activity of the fish. Carefully observe whether the fish swims normally, whether the body shape and scales are abnormal, and whether the appetite is strong. If abnormalities are found, they should be analyzed and treated in time. Observe the turbidity of the water, whether there is odor, etc., in order to change the water in time. Remove dead fish in time. If the dead fish is not removed in time, it will rot quickly and deteriorate the water quality. Especially when the water is turbid, dead fish are often difficult to find, so the inspection should be meticulous. Attention should be paid to fixed lighting time, regular water changes and disease prevention, fixed feeding time and feeding amount. Next, I will talk about some of the experience of f...