2W 120W LED Grow Light For Gardening Tomatoes Growing

Product Discription

Full spectrum:  Red: 660nm + 630nm, Blue: 475nm + 430nm, Orange: 615nm

Forms of electromagnetic radiation like radio waves, light waves or infrared (heat) waves make characteristic patterns as they travel through space. Each wave has a certain shape and length. The distance between peaks (high points) is called wavelength. Each shade of light along the visible spectrum can be measured in nanometers (nm) that range from 380nm to about 780nm, from blue/violet to red. spectral region influence the Plant Physiology:

• 280 ~ 315nm: The shape and the physiological processes of little effect. 315 ~ 400nnm Chlorophyll absorbs less, influence light cycle effect, prevent stem elongation.
• 400 ~ 520nm: (Blue) Chlorophyll and carotenoids absorb the largest percentage, the biggest influence on photosynthesis.
• 520 ~ 610nm:  Pigment absorption rate is not high.
• 610 ~ 720nm:（Red） Chlorophyll absorption rate is low, for photosynthesis and light cycle effect have notable effect.
• 720 ~ 1000nm: Absorption rate is low, stimulate cell extended, influencing flowering and seed germination In a word, the red, blue, orange is main wavelength/color energy for plants' photosynthesis.