Light Spectrum Chart

Here s a color temperature chart for reference.

Light spectrum chart. The above chart shows the par range the spectrum of light plants use for photosynthesis. As a comparison the uvb lights are only 280 to 315 nm. These also fall into a whole different category of the light spectrum and thankfully most are reflected back by the ozone layer. What shape led should i choose.

Plants use light for photosynthesis and photomorphogenesis. There are blue diodes green yellow red uv fr and of course white. The electromagnetic spectrum is a range of frequencies of different energy waves such as gamma rays x rays ultraviolet rays visible light infrared waves microwaves and radio waves. Each diode can be manufactured to emit any light color.

In many cases uv light is a very important contributor for plant colors tastes and aromas. Essentially that equates to the colors the human eye can see. How do plants respond to light. Grow light spectrum chart.

The visible light spectrum is the section of the electromagnetic radiation spectrum that is visible to the human eye. The light spectrum comes in wavelengths representing the visible colors and raging from 380 to 750 nm. It ranges in wavelength from approximately 400 nanometers 4 x 10 7 m which is violet to 700 nm 7 x 10 7 m which is red. Photosynthesis is the process by which plants and other organisms convert light energy into chemical energy.

It is also known as the optical spectrum of light or the spectrum of white light. The ancient greeks recognized that light traveled in straight lines and studied some of its properties including reflection and refraction the study of light continued and during the 16th and 17th centuries conflicting theories regarded light as either a wave or a particle. The visible spectrum or color spectrum is a subset of the electromagnetic spectrum. Electromagnetic radiation in this range of wavelengths is called visible light or simply light a typical human eye will respond to wavelengths from about 380 to 740 nanometers.

Leds are available in warm colors low k to match the yellowish light of incandescent bulbs but you can also choose cooler colors high k with whiter or bluer light. The visible spectrum is the portion of the electromagnetic spectrum that is visible to the human eye. Ultraviolet light 10nm 400nm though overexposure to radiation in the uv light spectrum is dangerous for the flora small amounts of near uv light can have beneficial effects. Grow light spectrum charts like this include both the par range and other spectrums as it s been discovered that wavelengths outside of the par range are also helpful for plant growth.

This grow light spectrum chart illustrates how par coincides with visible light spectrum. Why they are important and how to read them. In terms of frequency this corresponds to a band in the vicinity of 405 790 thz. Light color or color temperature is measured using the kelvin scale.