TIL Lighthouses had different techniques for rotating the light, most being too slow, making the light less visible. Augustin Fresnel proposed a mercury flotation system in 1825. Despite some lenses weighing over 6,000 lbs. the design reduced friction, increased rotation, and ultimately saved lives. uslhs.org/lens-rotation
Visible light produced by a meteor. v.redd.it/e07ed3rx51h61
Applying sunscreen, a visible-light vs. UV-light comparison
TIL the human body literally glows, emitting a visible light in extremely small quantities at levels that rise and fall with the day, scientists now reveal. Past research has shown that the body emits visible light, 1,000 times less intense than the levels to which our naked eyes are sensitive. nbcnews.com/id/wbna320909…
**NLD** Weltool M2-BF. Both pics taken with my bedroom light on. This has almost zero visible light. Pretty damn cool.
Beyond invisibility: multiple research groups have made metamaterials that work in the infrared; some are skirting the fringe of the visible portion of the spectrum. A group in Germany has created a thermal cloak, preventing an area from heating – just as an invisibility cloak bends light. ponderwall.com/index.php/…
Tallinn was visible from Helsinki on Monday (1st March) night due to extremely clear atmosphere that caused light beam deformations and refractions.
In The Descent (2005), at about 25 mins in, the group light a red flare in a wide shot. To the left, you can see a small monitor from the camera crew who will film the subsequent, closer shots for the sequence. It's visible right before the flare is lit until the scene cuts.
Visible light produced by a meteor. v.redd.it/0ykbso7ve3h61
Walk the visible spectrum of light v.redd.it/t4l89r8bptg61
Why are the people in Lakewood like this? Not Visible: The small sedan in the oncoming lane that had been waiting patiently to turn left, and then didn't get to because this asshead pulled out at the very last possible second and blocked the intersection. Light turned red before anyone got to go.
I have a rl useless power, I can see non-visible light but it hurts and i cant see pee under blacklight and it literally does nothing else
I was visiting up north with my family in Ashland Wisconsin taking a picture of Lake Superior from our hotel room. I “accidentally” got a view of the northern lights. Wasn’t visible with the naked eye but my camera magically caught it on the IPhone 11. I’m back at home in Appleton still confused.
Can a super-efficient incandescent light-bulb be created by coating it with infra and UV reflective coating, that lets out only visible light.
The idea is that IR and UV is reflected back on the filament, so only useful light can escape.
Ships of the US fleet at Ulithi Atoll, Caroline Islands, 8 Feb 1945. Visible are 7 large carriers, 3 light carriers, 3 battleships, and numerous cruisers, destroyers, and support vessels including 1 hospital ship. (2176x1709)
The importance of applying sunblock, a visible-light/UV-light comparison
Anyone know why characters’ Visions will pulse with light at times, even if not using their powers? In the video I took, both Kaeya & Sucrose’s Visions are glowing, with no visible cause. v.redd.it/f60eaofhiam61
[WP] One day you wake up only to find you are completely blind. In panic, you reach for your phone and its screen lights up. Only your phone screen is visible. Everything else is complete darkness.
The snow-covered Himalayan Mountains and the bright city lights of New Delhi, India, and Lahore, Pakistan, are also visible below the faint, orange airglow of atmospheric particles reacting to solar radiation, taken from the International Space Station.
Glendronach cheatsheet. In reference to myballs post, the 2019 bottling of the 18 puts the liquid at about a 24 year age statement. Best bang for the buck. You can see the laser code on the back blow the label. Kinda hard to see but in the right light it is visible.
Lmk if I’m fucked. Anybody know what this is seems internal way more visible with light coming through.. hoping this is what nute burn looks like up close and not a mold 🤞🤞🤞
Mandala fox from a kit I got for Christmas. First time using thread to cinch the fabric in a circle behind the frame... but how do I make it not visible?? I used dark green felt to cover the back, should I have used a light color? Help me collective knowledge of reddit!! reddit.com/gallery/lttyx7
Holo scratch question. I have several holos with scratching like this, but with NO other errors, including whitening. This is only visible under direct, focused light. What’s the grade damage?
Issue after updating to OOS11. I noticed that when using front camera, there is no longer any black trim displayed around the fron camera like on OOS10, and this results in screen light being visible while using wide angle camera, sometimes visible even with normal front camera
Is it posible to have two invisible light beams combine and form a visible spot on the wall? (to the naked human eye at least)
Hello guys,
Let me try to be more clear on my question. With invisible light beam i mean a light with a waveform not in the visible spectrum of human eyes, could be infrared or ultraviolet not dangerous to us, but when combined with other light beam that has a slightly different waveform make a visible spot in a wall or in a surface they hit.
One light by itself of course wont be visible to us. But is there any combination of short/long wavelenght lights that when combined become visible to the human eye? If you guys imagine it as laser lights it might make more sense.
I made a crappy drawing but it might help me explain more.
here is the link: https://imgur.com/I8R8K19
Thanks a lot in advance!!!
Beautiful Weather. Column backgrounds change as weather changes. Bonus: hidden rain chart, only visible when due. Light/Dark mode. Swipe for QR. reddit.com/gallery/krm0e5
FF VIII Discs 2 & 3 Respectively (They are under a direct light, so not always this visible) reddit.com/gallery/li1art
There are only 4 colours in the visible light spectrum.
TIL about structural coloration, the production of colour by microscopically structured surfaces fine enough to interfere with visible light. Peacock feathers are actually pigmented brown! magazine.scienceconnected…
Day 4 of foam yellowing my DS LJR OW AJ1. Placed the UV light inside 1 pair of the shoe. Noticeable yellowing after 8-10hrs. Visible results in comparison pics. reddit.com/gallery/l8cqq2
TIL the last bursts of light in the universe will not be visible from any of the other last remaining stars. The distances will be so large that the photons will decay before crossing them. popularmechanics.com/spac…
ngl I kinda miss when the cybertruck not having visible police lights so you could go undercover
Northern Lights visible tonight through Friday night! Any suggestions on less light polluted places to check them out?
Hi guys, does anyone know the name of this issue? It’s an almost white light in the same place on the screen. It is always there but mostly visible where the screen is dark
Pls fix. You can clearly see that only the guys shoulder lights are visible + desync v.redd.it/xxy5sr40e2861
If we could perceive waves like infrared and UV like we do with visible light, how different would our surroundings look?
Despite adjusting the sun size and light bounces to 'direct lighting', my renders still don't match the look I want as visible on the viewport. Any advice? reddit.com/gallery/lng16b
Lagoon Nebula in visible and infrared light (Credit: NASA, ESA, and STScI)
Do you see the cyclist? I almost didn’t. Get some lights and be visible my non motored road friends.
Is this contam?? After the first flush it dumped spores on the cake so there was visible dark spots but then these light orange/pink circles started popping up. No smell. What should I do?
Rhode Island in Visible Light reddit.com/gallery/l4dqyy
Lighthouse on a cliff (west coast of the Ocean). Unpainted and de-actuated version on page 4. Keep in mind that the light effect is inconsistent because it is achieved with fog machines (visible on the far left and right sides 50% of the time). reddit.com/gallery/laakuk
55+ct Pink/Champagne Topaz. Nearly flawless with a 10x visible crystal in crown. Watch whole video for multiple lights! $2200 v.redd.it/mm0zfpzebz761
38 Male 5'10" 210 Lbs - Does my palm look normal? I never noticed the white patches before. I see them better under different light. Most visible with my arms at my sides
Sorry I couldn't get my image to post directly.
https://imgur.com/a/7v1ElIM
These lights were visible all over the sky yesterday. These are light pillars, caused by little ice crystals in the air that reflect the light of the light sources on the ground
Radiant Northern Lights could be visible over the Midwest tonight timeout.com/chicago/news/…
There's a geomagnetic storm (aurora) visible in Michigan the next 3 nights and I wanted to see how far I'd have to drive to see it. Anyway, here's a light pollution map of Southeast Michigan that I thought I'd share if anyone else is interested.
Quick question about visible distances for light sources
So I'm a long time player of the mod, and I'm just starting to get back into the standalone now because it seems to be in a much better place. I've been playing on the first person official servers and holy crap the nights are dark.
In the mod flashlights and flares could be seen from basically an infinite distance but chemlights and the red tactical torch couldn't be seen past a certain distance (I think it was like 55m or something). Are there similar limits visual limits for light sources on the standalone or am I lighting myself up like an xmas tree every time I use a chemlight?
