61–70 of 117 posts
This seems dubious. What in world would be the mechanism? On the other hand, I don't see the harm in doing this and it seems easy to replicate. Hopefully others will quickly try to replicate it, and if they do, try to figure out why.
Questions: (a) Does this study sound plausible? (b) Would staring at the correct red color on a monitor work? Or would that not work since monitor colors are generated by mixing R, G, and B pixels and therefore not a pure wavelength? (c) Would it be reasonable methodology to test one eye to see if it improves over the other eye?
This is the hex value for 670 nanometre red. #ff0000 Per https://academo.org/demos/wavelength-to-colour-relationship/
Earlier quoted context omitted.
Shouldn't it be quite cheap to determine the frequency using a prism, using the angle of refraction? I think you should be able to use known missing frequencies in sunlight to calibrate your set up. Back in a minute going for duckduckgo
So it looks like you need a bit more than a prism to see Fraunhofer lines, but there seem to be online description of how to do it with a with a prism and a CD, maybe you don't even need a prism, there seem to be 'make your own spectroscope' tutorials than mention building one with cereal box, and maybe a lens of some kind
https://en.wikipedia.org/wiki/Emission_spectrum#/media/File:...
Earlier quoted context omitted.
Frankly my experience with posting sources on HN has almost never been good. It's often just taken as a reason to pick those apart and start a flamewar. My comment above has been downvoted at least 5 times which makes me confident that this is one those times. For what it's worth I have no stakes in anything and no sources at hand. I remember having read at least two different studies about this, but it has been year…
Surely it’s not controversial to post a scientific publication supporting your claims. I suggest you Google-fu yourself.
2017: Aging Retinal Function Is Improved by Near Infrared Light (670 Nm) ...
"Our data suggest, 670 nm light can significantly improve aged retinal function"
https://pubmed.ncbi.nlm.nih.gov/28129566/
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2016: Red Light of the Visual Spectrum Attenuates Cell Death in Culture and Retinal Ganglion Cell Death in Situ
" Low, non-toxic levels of red light focussed on the retina for a short period of time are sufficient to attenuate an insult of raised IOP to the rat retina"
https://pubmed.ncbi.nlm.nih.gov/26928988/
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2015: Mitochondrial Decline Precedes Phenotype Development in the Complement Factor H Mouse Model of Retinal Degeneration but Can Be Corrected by Near Infrared Light
"we provide evidence for a mitochondrial basis for this disease in mice and correct this with simple light exposure known to improve mitochondrial function"
https://pubmed.ncbi.nlm.nih.gov/26149919/
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2013: 670 nm light mitigates oxygen-induced degeneration in C57BL/6J mouse retina
"These results suggest that pretreatment with 670 nm light may provide stability to photoreceptors"
https://pubmed.ncbi.nlm.nih.gov/24134095/
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2013: Low-Intensity Far-Red Light Inhibits Early Lesions That Contribute to Diabetic Retinopathy: In Vivo and In Vitro
"Daily 670-nm PBM treatment resulted in significant inhibition in the diabetes-induced death of retinal ganglion cells"
https://pubmed.ncbi.nlm.nih.gov/23557732/
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2013: Paranode Abnormalities and Oxidative Stress in Optic Nerve Vulnerable to Secondary Degeneration: Modulation by 670 Nm Light Treatment
"Light at a wavelength of 670 nm may serve as a therapeutic intervention for treatment of secondary degeneration following neurotrauma"
https://pubmed.ncbi.nlm.nih.gov/23840470/
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2012: Age-related Retinal Inflammation Is Reduced by 670 Nm Light via Increased Mitochondrial Membrane Potential
"670 nm light [...] significantly increased mitochondrial membrane polarization and significantly reduced macrophage numbers and tumor necrosis factor-alpha levels"
Earlier quoted context omitted.
It's not implausible. How many modern "ailments" are simply the result of not doing what our bodies were adapted to.
This is why I bought a squatty potty and make sure to walk for an hour most days. Physical evolution does not keep up so well with modern society's pace of change and understandings therein.
I've started doing the 10,000+ steps for a couple of years, and yes there does seem to be a difference to my health and energy.
Questions: (a) Does this study sound plausible? (b) Would staring at the correct red color on a monitor work? Or would that not work since monitor colors are generated by mixing R, G, and B pixels and therefore not a pure wavelength? (c) Would it be reasonable methodology to test one eye to see if it improves over the other eye?
This is the hex value for 670 nanometre red. #ff0000 Per https://academo.org/demos/wavelength-to-colour-relationship/
Earlier quoted context omitted.
This is the hex value for 670 nanometre red. #ff0000 Per https://academo.org/demos/wavelength-to-colour-relationship/
This only makes sense on a precisely calibrated display. On everything else, there's no way to tell what wavelength you actually end up with when you fill your screen with a color.
Questions: (a) Does this study sound plausible? (b) Would staring at the correct red color on a monitor work? Or would that not work since monitor colors are generated by mixing R, G, and B pixels and therefore not a pure wavelength? (c) Would it be reasonable methodology to test one eye to see if it improves over the other eye?
(a) not a medical person so can't answer this (b) unlikely, monitors work by essentially filtering out undesired colors from white light. I don't believe that >650nm light is within the color gammut of monitors. That's quite a long wavelength and close to infrared. To give you an indication, the Helium Neon lasers which used to be very common in schools etc for laser demonstrations have a wavelength of 632nm. Even if…
