Why Red Should Be Your Favourite Colour

Have you ever heard of red light therapy? That’s when red light is shone on your skin to help with various skin problems. It’s supposed to reduce wrinkles and help treat acne and scars. As well it’s supposed to help with the appearance of the skin in general.

Meanwhile blue light, at the other end of the visible light spectrum, is considered bad for your sleep. Hours before you go to sleep, you are supposed to stay away from screens, especially blue light screens, because the blue light can negatively affect sleep by suppressing the production of melatonin.

So that’s red light good, blue light bad.

Then there is the red shift of all the galaxies in the known universe except one. All those galaxies are headed away from us. We know this because of the Doppler shift. The further they are away from us the bigger the red shift and the faster they are going away from us.

The exception is the Andromeda Galaxy. It has a blue shift and is headed towards us. Indeed it will hit us in about 5 billion years. Stars are really far away from each other. As a result, it is almost a certainty that none of the stars in Andromeda will hit any of the stars in the Milky Way (our galaxy). However, I think that the Oort cloud will be so disturbed that comets will rain down on us and might cause an extinction event.

So if you’re counting that‘s red shift good, blue shift bad.

Staying with astronomy, astronomers use red light flashlights. This is because red is known not to throw off our dark adaption. Using red light allows astronomers to read sky charts, coordinates on their equipment and anything else, like following instructions. Astronomers stay in the know because of red light.

The rest of the spectrum does throw off our dark adaption. So if you turn on a blue flashlight for instance, to read something, expect to wait another 5 minutes for your dark adaption to come back and you are useful again.

Again that’s red light good, other light bad.

As a useful home hack, do not buy clock radios that don’t have red light numbers. You both lose your dark adaption and if the numbers are blue, you are suppressing the production of melatonin both of which can negatively affect you at night.

What have we learned about all this? Well we have decided that your favourite colour cannot be blue. Red would be the obvious choice for your favourite colour. Make life make sense. Make it red.

Why Total Screen Luminance Matters More Than Blue Light Filters for Sleep

📰 Original title: Blue light filters don’t work

🤖 IA: It's clickbait ⚠️
👥 Usuarios: It's clickbait ⚠️

View full AI summary: https://killbait.com/en/why-total-screen-luminance-matters-more-than-blue-light-filters-for-sleep/?redirpost=454aa918-6b67-46c7-b49a-4e2f184387f8

#neuroscience #sleep #circadianrhythm #bluelight

Interesting (but controversial in the HN comments 😬):

“Blue Light Filters Don’t Work”, Patrick Mineault, NeuroAI (https://www.neuroai.science/p/blue-light-filters-dont-work).

Via HN: https://news.ycombinator.com/item?id=47091606

#Sleep #Health #Brain #CircadianRhythm #BlueLight #NightShift #DarkMode #Light #Eyes

"Is exposure to blue light before bed reducing your sleep quality by 60%?

Prolonged exposure to blue light, emitted by smartphones, computers, and TVs, suppresses melatonin production, making it harder to fall asleep. This is because blue light tricks the brain into thinking it's still daytime.

A good night's sleep is just as vital as a meal, it's not a luxury, it's a necessity.

What do you do to avoid the blue light sleep killer?

#SleepTips #BlueLight #Insomnia"