Regarding red light therapy, is 808 or 830 better than 850nm and 630 vs 650 or 660nm any difference? Over use, whereby diminishing effects set in, is a time period more than 20mins? - Quora
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![5mm Super Bright Red LED - 630 nm - T1 3/4 LED w/ 30 Degree Viewing Angle|RL5-R8050-C|Through Hole LEDs 5mm Super Bright Red LED - 630 nm - T1 3/4 LED w/ 30 Degree Viewing Angle|RL5-R8050-C|Through Hole LEDs](https://www.smartbrightleds.com/images/RED-LEDS-RL5-R8050-C.jpg)
5mm Super Bright Red LED - 630 nm - T1 3/4 LED w/ 30 Degree Viewing Angle|RL5-R8050-C|Through Hole LEDs
![Reflectance Spectroscopy Lab. Different colors correspond to different wavelengths of visible light 665 nm 630 nm 600 nm 550 nm 470 nm 425 nm 400 nm. - ppt download Reflectance Spectroscopy Lab. Different colors correspond to different wavelengths of visible light 665 nm 630 nm 600 nm 550 nm 470 nm 425 nm 400 nm. - ppt download](https://images.slideplayer.com/20/6063969/slides/slide_2.jpg)
Reflectance Spectroscopy Lab. Different colors correspond to different wavelengths of visible light 665 nm 630 nm 600 nm 550 nm 470 nm 425 nm 400 nm. - ppt download
![SOLVED: The power of a red laser (? = 630 nm) is 1.25 watts (abbreviated W, where 1 W = 1 J/s). How many photons per second does the laser emit? SOLVED: The power of a red laser (? = 630 nm) is 1.25 watts (abbreviated W, where 1 W = 1 J/s). How many photons per second does the laser emit?](https://cdn.numerade.com/ask_previews/761851bd-0efe-47f3-ab2f-347fd7c4c179_large.jpg)
SOLVED: The power of a red laser (? = 630 nm) is 1.25 watts (abbreviated W, where 1 W = 1 J/s). How many photons per second does the laser emit?
![Joint Pain Portable Led Near Infrared Infra 850nm Handheld Medical Lamp 630nm 660nm Red Light Therapy Torch Therapy Lamp - Face Skin Care Tools (none Electric) - AliExpress Joint Pain Portable Led Near Infrared Infra 850nm Handheld Medical Lamp 630nm 660nm Red Light Therapy Torch Therapy Lamp - Face Skin Care Tools (none Electric) - AliExpress](https://ae01.alicdn.com/kf/S1a77ffa3bec84c3c940ca06c594c51ean/Joint-Pain-Portable-Led-Near-Infrared-Infra-850nm-Handheld-Medical-Lamp-630nm-660nm-Red-Light-Therapy.jpg)
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![In a Young's double slit set - up, light from a laser source falls on a pair of very narrow slits separated by 1.0 micrometer and bright fringes separated by 1.0 millmeter In a Young's double slit set - up, light from a laser source falls on a pair of very narrow slits separated by 1.0 micrometer and bright fringes separated by 1.0 millmeter](https://dwes9vv9u0550.cloudfront.net/images/1833028/136a7152-dc26-4b9c-9923-7881952d7a79.jpg)
In a Young's double slit set - up, light from a laser source falls on a pair of very narrow slits separated by 1.0 micrometer and bright fringes separated by 1.0 millmeter
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![Spectrum of Indoorlux. Light is mostly emitted between 570nm and 630 nm. | Download Scientific Diagram Spectrum of Indoorlux. Light is mostly emitted between 570nm and 630 nm. | Download Scientific Diagram](https://www.researchgate.net/publication/323070715/figure/fig7/AS:597156125757441@1519384523224/Spectrum-of-Indoorlux-Light-is-mostly-emitted-between-570nm-and-630-nm.png)
Spectrum of Indoorlux. Light is mostly emitted between 570nm and 630 nm. | Download Scientific Diagram
![SOLVED:Red light of wavelength 630 nm passes through two slits and then onto a screen that is 1.2 m from the slits. The center of the 3rd order bright band on the SOLVED:Red light of wavelength 630 nm passes through two slits and then onto a screen that is 1.2 m from the slits. The center of the 3rd order bright band on the](https://cdn.numerade.com/previews/c607922b-8f68-472d-9a8e-ddee12a5635b_large.jpg)