Don't use a green laser in the cold!

Рет қаралды 5,120,393

3 жыл бұрын

Does a green laser pointer stop working when it is cold? Or does it turn into an invisible laser? That is nice to know for safety reasons if you are using a green laser pointer to point out stars on a frost-clear night.
And what about those decorations lasers for your garden? Are they safe at a freezing winter night? Time to find out in this video!
My Patreon-page: / brainiac75
Links for some of my videos on the subject:
Test of garden decoration lasers: • DECORATION LASERS | St...
Wavelength drifts with temperature: • Lasers drift with temp...
The issue with green laser pointers: • THE ISSUE WITH GREEN L...
You can see infrared?!? Failing safety glasses: • You can see infrared?!...
Monster magnet meets lasers...: • Monster magnet meets m...
Strongest lasers in my collection | Power and wavelength measured: • Strongest LASERs in my...
Did you miss one of my videos?: / brainiac75
FULL MUSIC CREDITS
Time codes: 0:01 + 0:46
"Consequence" Kevin MacLeod (incompetech.com)
ISRC: USUAN1100283
Time code: 0:36
"Gathering Darkness" Kevin MacLeod (incompetech.com)
ISRC: USUAN1100849
Time code: 0:57
"Winter Chimes" Kevin MacLeod (incompetech.com)
ISRC: USUAN1100009
Time codes: 2:32 + 6:41
"Darkness is Coming" Kevin MacLeod (incompetech.com)
Edited to be loopable.
ISRC: USUAN1100584
Time codes: 3:54 + 8:41
"Lightless Dawn" Kevin MacLeod (incompetech.com)
ISRC: USUAN1100655
Time code: 5:28
"Echoes of Time v2" Kevin MacLeod (incompetech.com)
ISRC: USUAN1300030
All music above licensed under Creative Commons: By Attribution 4.0 License
creativecommons.org/licenses/b...
Time code: 7:57
Mix of two tracks:
1) The Shimmering by fran_ky (freesound.org/s/237363)
Licensed under Creative Commons 0 license
2) "Spacial Harvest" Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 4.0 License
creativecommons.org/licenses/b...
ISRC: USUAN1100653
#Frozen #Laser #Brainiac75

Пікірлер: 4 000

@BarryTGash 3 жыл бұрын

"Never eat yellow snow"

@joelchristensen9744 3 жыл бұрын

Or red snow

@valinromania9639 3 жыл бұрын

@@joelchristensen9744 oh no

@machtharry 3 жыл бұрын

Never pet a burning dog!

@yaykruser 3 жыл бұрын

BarryTGash Why? Its so tasty!

@yaykruser 3 жыл бұрын

Joel Christensen What flavour is that?

@milokeskinen1681 3 жыл бұрын

When i was a kid i got my hands on a 100mw green laser decided to take it outside during winter i thought its batterys were dead and pointed it at my left eye. i lost about half off my eyes accuracy and now i see very badly with my left eye and depend on the right eye.

@RisinT96 3 жыл бұрын

Damn

@avi8aviate 3 жыл бұрын

Ouch.

@onefastslimjim 3 жыл бұрын

Yikes

@carageenan9652 3 жыл бұрын

Jeepers

@TheAechBomb 3 жыл бұрын

krikey

@techtinkerin 2 жыл бұрын

Had a 'legal' limit blue laser and a slight reflection off shiny metal gave me a spot in my vision that didn't go away for years..😐❤️🇬🇧

@Peter-wo4uo 2 жыл бұрын

Damn, that sucks.

@taube637 2 жыл бұрын

Hope you are better off now Cheers mate

@nothinghere8056 2 жыл бұрын

Laser goggles?

@mwill2509 2 жыл бұрын

Legal doesn't always mean that the product is safe.

@cannaisuer2091 2 жыл бұрын

I bought a legal blue laser off of eBay. Tested it. It was 5x the legal limit. Smh. I love it tho Edit:I just broke it... Fucking water logged it.

@-.._.-_...-_.._-..__..._.-.-.- 3 жыл бұрын

Treat every laser as if it were on. Never point a laser at anything you do not intend to blind. Keep laser safety goggles on while laser is in use. Keep power disconnected from laser until you intend to use.

@viniciomonge3960 2 жыл бұрын

Underrated comment

@ericpurvis2262 2 жыл бұрын

So basically treat it like a firearm

@aaroncalderon5513 2 жыл бұрын

Rah

@Majima_Nowhere 2 жыл бұрын

SMH why haven't we banned assault lasers yet? 🙄

@cdavid469 Жыл бұрын

@@Majima_Nowhere lasers don't blind people, people blind people, I have never seen a laser sitting on a desk decide to get up and hurt someone /s

@EastBayFlipper 3 жыл бұрын

"Do not look at laser again with remaining good eye" was the warning sign on a laser equipped device in one of my workplaces.😉

@Aragubas 3 жыл бұрын

lol

@TomKappeln 3 жыл бұрын

And on my Spectra Physics is written : "This device will not only kill you, it will hurt until you're dead ..."

@tuser8 3 жыл бұрын

It’s a winking face because the laser hit one

@Qaptyl 2 жыл бұрын

... @@TomKappeln ...and keep hurting youre corpse

@xyxxxy3845 2 жыл бұрын

Looking at a laser is a mistake that you will only make twice :D

@valeriavagapova 3 жыл бұрын

"Lazer beams are always an eye hazard, especially the invisible ones in this video..." *puts on safety goggles and carefully peeks at the screen*

@HillsWorkbench 3 жыл бұрын

I always feel like that when watching TV or video where they are welding!

@kshatriya1414 3 жыл бұрын

Hill's Workbench Hahahaha sameee

@rey4874 3 жыл бұрын

@Dr. W.D Lefty {yandere 0wU} is a joke

@tmdosu 3 жыл бұрын

@Dr. W.D Lefty {yandere 0wU} Yeah, no shit Sherlock.

@anothrto1045 3 жыл бұрын

@Dr. W.D Lefty {yandere 0wU} you don't have full spectrum 64k tv?

@Yourname942 2 жыл бұрын

the worst part about those lights are: it typically points at your front of the house where you walk past it (and potentially directly at it)

@sbalogh53 2 жыл бұрын

I think they might be "safe" because the beam is split into hundreds of smaller spots so the power reaching your eye would be very low.

@dirtrider88 Жыл бұрын

@@sbalogh53 exactly. thats the reason it didnt even show up when he did the warm test. because that thing was over the laser just as you would use it in your yard.

@djea3589 Жыл бұрын

IT seems to me that as this is a safety issue, that laser pointers should possibly be banned altogether, along with these "star" generators for Christmas and other uses. I can see no real purpose in every day use beyond some "convenience uses. There is not even a good cause for use as sighting devices for pistol and rifle. There are other devices that give just as accurate or more accurate firearm alignment. Regardless of "splitting" the beam into hundreds, that relies on a diffraction plate which can be damaged or come loose or fail.

@Paul....... 7 ай бұрын

@@djea3589ban everything!!

@N2RI1 7 ай бұрын

and in windows reflecting who knows where

@Soandnb 3 жыл бұрын

Cold sensitivity is part of the reason I used a 520nm direct diode when building my astronomy laser. VERY expensive, but it was absolutely worth it!

@pokemoncrusher1246 Жыл бұрын

Can just wrap in heater wire

@alexandermcclure6185 7 ай бұрын

@@pokemoncrusher1246 Still could take a bit to heat up, meaning it still releases dangerous light that we can't see!

@DKNguyen3.1415 7 ай бұрын

@@alexandermcclure6185 I guess you could add a temperature interlock.

@HanTheProphet 5 ай бұрын

@@DKNguyen3.1415 yeah itd be like a 7$ diy solution using esp32 chips even

@johnjordan3552 3 жыл бұрын

Don't use a green laser in the cold! -Blue laser

@brainiac75 3 жыл бұрын

Blue DPSS 473 nm lasers have the same issue - maybe even worse since they are less efficient and need a stronger infrared pump diode. But 445-450 nm direct diodes have no issues in the cold. Thanks for watching!

@bluethefoxyt 3 жыл бұрын

@@brainiac75 what about UV purple lasers I own a UV purple laser that was marketed at a purple laser I know it is UV because if I shine it at stuff that glows under UV it glows very bright

@necrobynerton7384 3 жыл бұрын

@@bluethefoxyt I could be wrong so do your research but I think UV lasers are if not even more powerful because the UV spectrum is way above the visible range and requires more energy to produce Again, i could be totally wrong since i don't know exactly.

@Dogetuberyt 3 жыл бұрын

@@bluethefoxyt that would most definitely be worse

@bluethefoxyt 3 жыл бұрын

@@Dogetuberyt yeah but I follow standard safety procedures of lasers so the risk is small but its still there so eh

@Dogetuberyt 3 жыл бұрын

Yes I will!

@Coyote0874 3 жыл бұрын

Yes I will!

@Dogetuberyt 3 жыл бұрын

@Sixhawk yes, for science!

@beanbop373 3 жыл бұрын

Yee

@swiftbeats4310 3 жыл бұрын

Don’t do iiiit

@vacuumboy6.0 3 жыл бұрын

*For science!*

@jayluck8047 3 жыл бұрын

“Remember... if it comes with a warning label, somebody did it.” - Stephen Colbert My first slot-load DVD-ROM drive came with this label: “Do not use the accompanying tool to manually eject any disc from this drive while the disc is still spinning. Doing so may cause a variety of serious injuries including decapitation.”

@tomfson8609 3 жыл бұрын

Damn poor guy "decapitated by putting stick in dvd slot"

@jayluck8047 3 жыл бұрын

The, “tool” was just a glorified push-pin that went in your standard manual eject hole. Difference being, there was no tray or front-flap to stop the disc from firing out when you shoved the pin in when it was spinning away at 32x while doing say, a large file transfer. If you pointed it away from yourself, it became a formidable weapon at medium range. Kinda like my tower was a cannon.

@assassinonprozac 3 жыл бұрын

That’s kinda like Rocket Launchers having “Point at enemy” printed on them. Also I saw a label on a saw that said “do not put penis in front of saw” really want to know what happened to that guy.

@londonuntergunther252 3 жыл бұрын

Ahh...negative entropy [aka natural selection]

@yona9798 3 жыл бұрын

@@londonuntergunther252 what a reply

@snoozyyaloozy5511 3 жыл бұрын

Honestly, I don't trust those lawn laser shows because I'm scared they're gonna make me blind if they shine through my window.

@juzniewiem 3 жыл бұрын

Don't look at them then

@michaelkessler3813 3 жыл бұрын

I thought they just use prisms

@Keterius 3 жыл бұрын

Just close the curtains/blinds lmao

@juzniewiem 3 жыл бұрын

Bro don't smoke rubbing alcohol it'll make you say things this stupid

@dsrM 3 жыл бұрын

But not all types of lasers

@nathankellogg2640 3 жыл бұрын

This is actually really scary stuff. Random people buy those green laser lights for Christmas all the time and completely and unknowingly carry an extremely dangerous weapon. And they don't even know it's on.

@Superabound2 3 жыл бұрын

Not to mention all the terrorist Antifa scum taking them to riots to intentionally blind people for life

@rberry494 3 жыл бұрын

Most products sold in the US seem to have a high lvl of danger. This doesn't seem to be an accident.

@deathbydeviceable 3 жыл бұрын

@Akhenaton yes, but do your own research. I find it easier that way cause once you're on one side, it kind of sticks. If you do, you'll be surprised how misleading media can be

@mem7806 3 жыл бұрын

@@Superabound2 when has that happened?

@squeaky2384 3 жыл бұрын

@@Superabound2 this comment didn’t age well

@Limara64 3 жыл бұрын

I burnt my retina in the 70’s looking at eclipse of sun with no eye protection. I can’t tell how much hassle it is only having 1.5 eyes. Play safe kids!

@tejasdixit4417 3 жыл бұрын

@Akhenaton its ussually a sudden procces. At furst you only feel a bit warmth but that turns into burn in matter of milliseconds.

@yummyliciosable 3 жыл бұрын

first question, i'm sorry, but did you begin with 2.5 eyes?

@gabriella2902 3 жыл бұрын

I once looked into sun eclipse without eye protection, glad i didnt burn my eyes.

@randallsanders1766 3 жыл бұрын

@@gabriella2902 i'm pretty sure i was only fine when did it because the clouds dulled the light.

@cwickwitted 3 жыл бұрын

@@yummyliciosable is not a joke, a fire ember while drinking beers on the beach burned a hole in my cornea... I can't describe the feeling. It's like a never ending and outrageously frustrating to have 'empty white dot' about 10% to the right, from the center of my left eye. I can't track lines when, let alone speed, reading anymore... I feel like I have something in my eye that won't go away even years later, almost like a small flake of skin will never fall out... Optometrist says it's likely a disfugred piece of 'eye meat' lol, from searing from hot ash. Know how it is supposed to go away? Years of blinking... Every minute, every day, hour, etc... Until the feeling of a sliver in your eye goes away

@kashphlinktu Жыл бұрын

Wow, I didn’t know green lasers could make infrared when cold. I took a laser safety training course in college, we were very careful about locking the door, taking off all jewelry, putting a filter in front of the laser till we had it aligned, etc. lasers are scary!

@paca_bill4863 3 жыл бұрын

Intersting. I've got two of the green 5mW pointers like you show here. One functions correctly. With the other, it appears that the green lasing went out on it; not sure if it is due to a misalignment or whatever, but you can see inside the bezel that there still is some activity going on. Not sure I would have guessed it could still be lasing in the infrared spectrum, but I've seen enough here that I think I am going to permanently disable it.

@rich1051414 3 жыл бұрын

Today I learned Europeans have upside down refrigerators.

@Imdor 3 жыл бұрын

We use both, small freezer and it goes at the top, big it goes to the bottom.

@rich1051414 3 жыл бұрын

@@Imdor Ah ok, maybe we do here as well, but I only ever see top freezer, or left side freezer. The very bottom is the 'crisper' for fruit and veg. I think it's supposed to have a different humidity down there or something.

@GeekIWG 3 жыл бұрын

In the USA I see all configurations. In older refrigerators the freezer is usually at the top. In more modern ones I tend to see the freezer at the bottom or on the side.

@forksandpopsticles9183 3 жыл бұрын

@@rich1051414 to the left?

@tinymetaltrees 3 жыл бұрын

That means you’d need a very level floor or need to use shims, since the adjustable feet will be on the top. Heck, the condenser drip tray would be up there too. Seems impractical to me. Why don’t they just flip them over?

@Sweet4Swirllix 3 жыл бұрын

"Do not point lasers In your eyes" Me who does it thinking the battery died: 👁️👄👁️

@Pablovru 3 жыл бұрын

❌👄👁️

@iiCounted2134 3 жыл бұрын

@@Pablovru lol

@LittleWhole 3 жыл бұрын

Kristina Petrov Haha xD

@astafire6810 3 жыл бұрын

Just point it at a mirror, away from your eyes, you should be able to see if its shining a light. Or just point it at a wall in a really dark room, no damaged eyes there

@vizar1653 3 жыл бұрын

@@Pablovru i laughed too hard

@khyleebrahh7 2 жыл бұрын

I wish i knew this when I was a younger. The amount of times I have looked directly into a laser beam is unbelievable. When my green laser was dead flat I would see a red light so id look directly into it. But now I am a lot safer with lasers. Especially knowing just how powerful and dangerous they are

@cerebrummaximus3762 Жыл бұрын

Me too

@3800S1 7 ай бұрын

Yep, me too and probably explains the inexplicable blind spots in my right eye many years after ever touching a laser. Back then it was a very very early red pointers, when they first started to appear on the market back in the late 90s. I've had retina scans done when I noticed this and again a few years later but my eyes show up very healthy. So it might not be visible physical damage but probably biologically my photo receptors are buggered. I first noticed these blind spots some 10+ years after stuffing around with the pointer, but I also welded lots without a mask and guilty of the magnifying lens on a hot summers day lol.

@baseddepartment1645 6 ай бұрын

@@3800S1Yeah I'd say the welding without a mask is probably what did it lmao

@nuguns3766 5 ай бұрын

@@3800S1it was the welder dude it's gotta be. I got a blind dot from a worker building a bank in traffic. I looked and now that spot shows up when I look at white web pages. West a freaking mask when u weld man seriously. Think

@3800S1 5 ай бұрын

@@nuguns3766 Tell that to a 14 year old that acquired a dodgy welder with a even more dodgy mask that would couldn't see though so ended up flashing his eyes to see where the rod was before striking up and accidentally arcing. Young and dumb!

@gotyouchip1179 Жыл бұрын

This is pretty spooky to see. I had a friend with one that we were messing around with one late on a cold night. I don’t recall looking at it directly ever but it was only working when it was warm. Worrying to think I could’ve damaged my eyesight

@primrose6794 3 жыл бұрын

Well, there goes my Monday plans.

@Connor-zb4uo 3 жыл бұрын

First reply

@yugodeandrawirayudha4908 3 жыл бұрын

First second reply.

@ikillfurries 3 жыл бұрын

God help us, even normal comments aren’t safe from retards saying if they are “first”, even tho no one ever gives a shit.

@yugodeandrawirayudha4908 3 жыл бұрын

@@ikillfurries dude i'm joking sorry

@ikillfurries 3 жыл бұрын

Yugo Deandra Wirayudha You have no idea how bad it is, I just really hate people who think people care that they are first

@aarongreenfield9038 3 жыл бұрын

Or never stare into one with remaining eye.

@Kalvinjj 3 жыл бұрын

Reminds me of AvE's sign for "caution: laser radiation" written in braille

@heleavesthe99 3 жыл бұрын

😐

@JesusisJesus 3 жыл бұрын

Yet they do surgery with a computer controlled laser to reshape your eye so you don’t need glasses.

@liamhartrey9014 3 жыл бұрын

Spartan laser reference?

@aarongreenfield9038 3 жыл бұрын

@@liamhartrey9014. Technically yes, but it's a blanket statement for anything over a few milliwatts. Spartan certainly falls into that category. Spartan would be, do not aim at face while lighting cigarette.

@fattytfrompsd3901 3 жыл бұрын

This winter my electric fireplace kept kicking on randomly. I figured there was an IR leak but I had no idea it was in the front lawn. Awesome explanation.

@oligould8575 2 жыл бұрын

Those green lasers are as dangerous as they are fun... I definitely didn't play safe enough with the 150mw green laser I used to have... I never looked directly into the laser and was careful of reflections... but I was obsessed with seeing that green beam in the dark, it looked so cool on a dark night, and I'd also point it at the walls in my room sometimes, and occasionally pop balloons... I even used it to etch my name into black plastic once or twice. the beam was always defused, but still dazzlingly bright... Im convinced all that playing with the laser was what caused vision in my right eye to go blurry later down the line anyway with the current rate of technology I figure I'll be in line for a bionic eye in like 20 years... I wonder if I can get one that shoots lasers

@swayback7375 8 ай бұрын

There’s a dude who really lost an eye and he did infact construct a reasonably bright and useful flashlight eyeball… I’m pretty sure he made a red laser as well. I need to rewatch that

@swayback7375 8 ай бұрын

Oh… yea… I meant to say, so long as you want a bionic eye that emits then you’re good. One that receives and receives and displays is probably more than 20 years away… but I don’t know… maybe they’re find a way to grow a new eyeball from like slug and salamander genes… in fact I bet we’re closer to that tech being reality than a real functional bionic eye… I’m now intrigued but it’s 4am

@oligould8575 8 ай бұрын

@@swayback7375 honestly between things like nuralink and the constant improvement and shrinking of technology… I wouldn’t be surprised if we’re only 20 years away from a useful bionic eye Heck I’d say the technology is there to fit the components of a smart phone into something the size of an eyeball, when you consider most of a smartphone is screen and battery… so making the eye isn’t a problem… it just comes down to how we plug it in and make it compatible with the human brain… but I think scientists working with AI could help solve some of these problems in the coming decades 🙂

@Destructocorps 5 ай бұрын

Remind me not to make eye contact with you in 20 years time

@GINeric_ 3 жыл бұрын

"Don't look at directly at the laser" Proceeds to look directly at his laser

@oxymoron296 3 жыл бұрын

Is that how you lost your eye, Grimmes?

@indodinoyoutube 3 жыл бұрын

@@oxymoron296 😂

@MadScientist267 2 жыл бұрын

Lemme guess. You licked the frost too...

@sbalogh53 2 жыл бұрын

I thought he looked at the laser with his camera, not directly with his eyes.

@55Ramius 3 жыл бұрын

I would say you have prevented a few eye damage cases with this information. Thanks for presenting it.

@ThomasGrillo 3 жыл бұрын

Thank you very, very much for this. I had NO idea this was happening with cold lasers.

@beanmchocolate3900 3 жыл бұрын

Thanks for the heads up, and also educating others on this as well.

@trashcompactorYT 3 жыл бұрын

Invisible light is terrifying but so cool. Also my uncle had one of those laser displays inside his house and one of the green beams hit me directly in the eye and I was dazzled for a full day. I feel immensely lucky to still have my vision. My uncle is so stubborn he still refused to turn the thing off.

@danl.4743 3 жыл бұрын

Maybe he can't see the off switch but doesn't want to admit it... ;)

@gajbooks 3 жыл бұрын

I think they're horrible and ugly anyway. Just arrange an accident for it.

@jheanelltabana8713 3 жыл бұрын

INSIDE his house? Wow, that's got to be blinding even on a good day.

@Loverboy6027 3 жыл бұрын

Don't you have something smarter to do???

@SirDella 3 жыл бұрын

@@Loverboy6027 ?

@mannys9130 3 жыл бұрын

I've learned a lot about "harmless consumer grade" lasers from your channel. I honestly don't even want to play with my cat using the laster pointer anymore because I'm afraid it's improperly constructed or rated and it'll harm his eyes if it hits them directly while he chases the dot. :( I have lost all trust in cheap laser manufacturers and I don't assume that wavelength or power rating labels are anywhere close to being correct anymore.

@No-pm4ss 3 жыл бұрын

bdf2718 Lol no I’m not buying that :P

@sheepish2159 3 жыл бұрын

@@fireemperorzuko8756 Damn, the joke flew higher over your heads than the plane in their story.

@oh-ox9sj 3 жыл бұрын

Well hitting eyes for not long enough is not that dangerous

@loganiushere 3 жыл бұрын

bdf2718 “And then they went to tailspin and crashed into a hillside, and the plane exploded in giant fireball, and everybody died! Except for me. You know why? Cause this story is fake, and my seat was back in the full up right position, cause this story is fake, and my seat was back in the full upright position! Cause this story is fake, and my seat was back in the full upright position! Hahaha, haha, oh!" Maybe listen to Albuquerque?

@truenull. 3 жыл бұрын

Obviously the answer is using proper quality industrial grade megawatt lasers for playing around with like you would a those "harmless consumer grade" stuff.

@plixplop 2 жыл бұрын

Really interesting and a little worrisome! It would be cool to see a followup that goes into the physics of why laser diodes are affected this way by cold?

@Albanian_History 3 жыл бұрын

I had a little red laser pointer and I was at a cousins party and the laser stopped working then I swear I pointed it at my eye but nothing bad happened and I’m so thankful

@papazype 3 жыл бұрын

probably didn’t hit your retina and only got really close

@vincentrobinette1507 3 жыл бұрын

You showed me a very interesting thing indeed: I tried using the camera on my phone to view the IR LED in my television remote, and the camera showed the IR as red. I cannot see the LED with my own eyes, but my phone camera picks it up clearly! Now, I've got a good way, to tell if a remote control is working or not. Thanks for showing this.

@BierBart12 3 жыл бұрын

Makes me wonder why some remotes do emit visible light.

@InimicalDivinity 3 жыл бұрын

I saw a post a while back about doing this in hotels. If you look around the room with your phone camera you can catch the IR from hidden cameras. Same with changing rooms

@TerrisLeonis 3 жыл бұрын

For anyone else trying this: the back camera of a smartphone often has a filter to remove infrared light, but the front "selfie" camera usually doesn't. If you test this out and it doesn't work, try the front camera instead!

@sleetskate 3 жыл бұрын

if your in a dark room you can see light form a remote control with your naked eye

@hlessiavedon 3 жыл бұрын

@@sleetskate only if it also has a red visible light led in it as well, infrared is invisible to humans

@subjectc7505 3 жыл бұрын

DON'T USE GREEN LASER IN THE COLD Military Special forces: about that...

@sandordugalin8951 3 жыл бұрын

well, when you're shooting people with depleted uranium slugs, blinding them becomes a lesser concern.

@blackirish781 3 жыл бұрын

It's legal to kill people in war, but not to maim/blind them on purpose. There are also no rounds for small arms that use depleted uranium. Armour piercing rounds for rifles and machine guns use either hardened steel or tungsten. Some tank rounds are DU however.

@Syphaxis 3 жыл бұрын

@@blackirish781 Don't forget the A-10 Vulcan cannon!

@cutiebunnyamber3447 3 жыл бұрын

they use red

@TomKappeln 3 жыл бұрын

@@cutiebunnyamber3447 No we don't.

@Luna-Fox 6 ай бұрын

I'm very glad this got recommended to me right before the holidays

@KellyStarks Жыл бұрын

Woah! I never would have thought of this as a risk!

@RayMak 3 жыл бұрын

This is interesting

@CaptianTitan 3 жыл бұрын

Hey

@CaptianTitan 3 жыл бұрын

Ray mak

@CaptianTitan 3 жыл бұрын

You have 100 k subs

@CaptianTitan 3 жыл бұрын

Nice

@RayMak 3 жыл бұрын

{Captian Titan} nice bro

@catkeys6911 3 жыл бұрын

0:55 "...and don't lick the frost." But, more importantly, watch out where the huskies go, and don't you eat the yellow snow.

@maxsolo2652 2 жыл бұрын

People always want to break rules.

@jekku9468 4 ай бұрын

zappa chad

@NuisanceMan 3 жыл бұрын

It's true. Once I was at this football game in freezing weather and tried to use a green laser. The enemy quarterback wasn't dazzled at all and threw a touchdown pass. We lost the game and then he went blind. So humiliating. :(

@erikblue7842 Жыл бұрын

Only when you said "In Denmark", I realised how danish your accent was. Great video man!

@DragonoidOmega 3 жыл бұрын

"and don't lick the frost" jokes on you I'm eating icecream while watching this

@theomasters1977 3 жыл бұрын

me too

@michaelheinrich44 3 жыл бұрын

don't eat yellow snow

@bluesillybeard 3 жыл бұрын

I'm starting to realize that my chances of becoming (at least partially) blind are a lot higher than I thought.

@alecwhatshisname5170 2 жыл бұрын

Yes, I bought one of those "5mw" lasers at a gift show when I was younger. Was v bright, and could even see the beam quite well. Dont know how many mw it really was. Quite scary in hindsight.

@memejeff 2 жыл бұрын

@@alecwhatshisname5170 same

@travcollier 2 жыл бұрын

When an old fart (like me) tells you about something stupid they did which didn't turn out ok... That's the sort of advice you should probably pay attention to. ;)

@memejeff 2 жыл бұрын

@@travcollier condescending as hell

@travcollier 2 жыл бұрын

@@memejeff No. Condescending would be pointing out that you have apparently low reading comprehension skills and an immature habit of interpretating statements in the worst possible way (even when other interpretations are more obvious). :p Seriously though... What I wrote was clearly self deprecating ("old fart") and basically amounts to "don't be as dumb as we were" along with an implicit but obvious dig against the common "in my day we did X and I turned out OK" BS. So, yeah, *woosh*

@Ohne_Silikone 3 жыл бұрын

Learned something today, thanks!

@thestrangegreenman 2 жыл бұрын

I love this channel. I learn so many new things every time I watch.

@PatchworkRose567 3 жыл бұрын

I’ve always been told to never, under any circumstances, bring an active laser near my eyes or anyone else’s. My grandmother has cats and she would only let us use the laser pointer when we were younger if she was watching us and that we were careful with where my brother and I pointed it. If the button was being pressed, then you could no longer look at it directly.

@i_never_asked_for_an_alias 3 жыл бұрын

This Video most likely saves a lot of eyesights. Thank you.

@csmith9684 Жыл бұрын

This is great work - Hardly anyone knows about lasers (cold) this needs to be past on

@henry55430 Жыл бұрын

This is one excellent safety video. This should be shown at any profession where lasers are present at workstations

@yourcaseworker6916 3 жыл бұрын

The following only applies to DPSS Laser pointers... Direct green diode lasers work fine...I use a Nichia 9mm direct green equipped pointer pushing 1250mW and never had an issue in subzero temperatures. Keep the optics from fogging up as the pointer thaws and you're good to shine.

@Laundry_Hamper 3 жыл бұрын

This sounds like a phrase to reawaken a sleeper agent

@radiotruck8135 Жыл бұрын

Thankyou for looking into it

@Timei 2 жыл бұрын

When the button on those green lasers doesn't seem to respond often times the entire unit inside the casing is twisted and doesn't allow the button press to be correctly recognised. Just remove the foamy ring and turn it around with a pair of tweezers so the button lines up. Don't know if that is the case with your unit but worth a try.

@AndrewBeals 3 жыл бұрын

The first diode laser I used was cooled by liquid helium and the experiment software I wrote for it drove a heater underneath and read the resulting spectrum after it passed through a CO2 sample. Thus, this isn't much of a surprised to me. As to the heater, in the yard decoration, I'm surprised they didn't spend an extra fifty cents and keep the laser off until it was up to temp. Oh, the grand profits they must have reaped.

@Streamtronics 3 жыл бұрын

7:30 I mean they're not lying with the

@RedLine_Renesis 3 жыл бұрын

You literally wrote 'Less than' symbol, so they lied.

@SouseMouse 3 жыл бұрын

@@RedLine_Renesis Technically no. One megawatt (MW) is not one milliwatt (mW).

@chrismofer 3 жыл бұрын

@@RedLine_Renesis they literally wrote megawatts soo

@sebaberny7170 3 жыл бұрын

lol

@darth_dan8886 3 жыл бұрын

When you really can't be bothered to measure...

@gloro8297 Жыл бұрын

I have that laser and this video has been a massive help to safety thank you❤

@bowiemtl Жыл бұрын

I thought the title was clickbaity going into the video but surprisingly it's not at all. Thanks for warning people about this

@Psychopatz 3 жыл бұрын

I frickin love your triangle hazard icons bro, it's so interactive in every video

@Curtislow2 3 жыл бұрын

I appreciate your sincerity of the severity regarding Laser safety. Thank you for the ever present and important education.

@xirtus 2 жыл бұрын

This guy answers the real questions... holy cow

@jin_woo_vip 3 жыл бұрын

Your project is mind blowing🤯

@ngiorgos 3 жыл бұрын

I had noticed on my own that my green laser pointer would produce a much weaker beam when cold. I just assumed it was the batteries struggling. This was really enlightening. Thank you

@SamSamuylik 3 жыл бұрын

enLIGHTening huh...

@richntampa 3 жыл бұрын

Please don’t use those to “point out stars”, that’s how you end up shining them on airplanes.

@omarrios2907 3 жыл бұрын

Sounds like you've done this before hmm 🤔😂

@richntampa 3 жыл бұрын

omar rios Nope. I’m a pilot. The laser flashing is getting more and more common. It’s a felony and dangerous. And we report it. Just aware that some folks don’t know any better and the potential harm it can cause is huge.

@tigerbhoy1996 3 жыл бұрын

@@richntampa what are the dangers?

@richntampa 3 жыл бұрын

tigerbhoy1996 Just google lasers and airplanes. Tons of articles and examples. abcnews.go.com/US/lasers-dangerous-airplane-pilots/story?id=32499432

@secretagb 3 жыл бұрын

@@tigerbhoy1996 you know how you can't see out of your car on a cool morning when the sun glare glances across your dirty/dusty/frost covered windshield? Yeah that x10 on an airplane. Then factor in color vision distortion, meaning you lose the ability to discern certain wavelengths of color. Imagine having to look at instruments and you can't properly read them because they're displayed in a specific color in which you are now blinded. Source: Am Naval Aeromedical Research engineer and we've done a lot of study and looking for solutions to this problem.

@DudleyIntelligence Жыл бұрын

Great video! Thank you for creating this! Very exciting

@somedude4805 7 ай бұрын

Good stuff. I learned quite a bit from this, thanks!

@DiegoBrando 3 жыл бұрын

I've never owned a green laser and live somewhere where temperatures never drop below 26°C, yet here i am

@alexdashwood4976 3 жыл бұрын

Where are you live?

@ibrahimqureshi2420 3 жыл бұрын

Za waradu

@KC9UDX 3 жыл бұрын

I own a green laser that works just like the broken one in the video, I live where it (thankfully) gets down to -30°, and I don't even know why I'm here.

@BankruptGreek 3 жыл бұрын

@@alexdashwood4976 wild guess, Singapore, it's about the same temp all year around from what I ve heard.

@diobrando4024 3 жыл бұрын

Sukeri Monstah

@beanus9471 3 жыл бұрын

Watching this while I'm from a tropical country where it's never colder than 27 degrees celcius.

@TheKillStreaker 3 жыл бұрын

Dude this is amazing

@waderich9904 6 ай бұрын

Thank you. This is a very good video to point out important safety knowledge

@HillsWorkbench 3 жыл бұрын

This is an important video, spread it wide. Super easy to damage your eyes when messing with lasers.

@Unethical.Dodgson 3 жыл бұрын

And the answer is simple: Don't mess with lasers :)

@itskaptainmikey4399 3 жыл бұрын

As soon as I started watching, I paused to google how dangerous old tv remotes were...

@fandyus4125 3 жыл бұрын

Are they?

@IkBenBenG 3 жыл бұрын

@@fandyus4125 No, they never used lasers. The IR LEDs they use are much less harmless than a laser as the light is much less focused (if it was focused, you'd have to aim it precisely at the receiver). Before IR LEDs they used (mainly ultrasonic) sounds to transmit the signal, or in rare cases radio waves. Some modern remotes use bluetooth. All those technologies are completely harmless.

@allbb96 3 жыл бұрын

man same, i knew they emitted IR but never even thought that they could potentially be dangerous (which they apparently aren't).

@boboften9952 3 жыл бұрын

TV INFRARED REMOTES , THEY ARE VERY DANGEROUS WHEN THROWN AT THE TV .

@vincentrobinette1507 3 жыл бұрын

TV remote IR LED's are diffused, so they will not concentrate their IR energy in a highly focused beam. Unless you all but touch your cornea with the center of the LED capsule, no worries. Looking at the emission end of a TV remote is harmless.

@starsiegeplayer Жыл бұрын

Wow... I had never thought of this.

@johnt.inscrutable1545 3 жыл бұрын

A brilliant video about a danger too few people know regarding green lasers. Thanks!

@syedmasudali9492 3 жыл бұрын

This channel needs way more subscribers than Netflix's.

@brianoof202 3 жыл бұрын

this is my first time here and im gonna say,your logo looks both cool,and functional,wow

@chispychisp1690 3 жыл бұрын

* *has flashbacks to childhood looking into lasers* *

@cutiebunnyamber3447 3 жыл бұрын

man same, i rememebr when i was 8-10 yrs old. used to looks into Red Laser lights, they're cheap like 20 cents. i look in them in my pupil like I can't see anything but the laser, i feel like I'm in space , it's cool. now the consequences i got was blurry left eye.. I'm saving my right for now...

@chispychisp1690 3 жыл бұрын

@@cutiebunnyamber3447 lol for now XD

@mellissadalby1402 3 жыл бұрын

Ahh, so the cold temperature is affecting the optical doubler (which doubles the frequency and cuts the wavelength in half). When it warms up, then the optical doubler starts working again.

@ZXLNT 5 ай бұрын

Yep yep.

@stevenkamala7238 3 жыл бұрын

Thanks for this video , really educative 💯👍

@VictorSilva-rq4kz Жыл бұрын

Thank you so much! I learned something today.

@MariusHarmse 3 жыл бұрын

This is an excellent video on laser safety! Thank you so much.

@pattheplanter 3 жыл бұрын

Still got a bucket of blood in your freezer?

@fritzwilhelm8258 3 жыл бұрын

Don't ask, don't tell.

@ohheylads 3 жыл бұрын

Don’t tell me i’m the only one who heard goofy’s voice. I love this channel 😂

@christophernunez6802 3 жыл бұрын

Dude! Sounds so much like Eckhart Tolle. If I'm lyin' I'm dyin'!

@intent2leavematrix939 3 жыл бұрын

Just sounds like a Dane. A lot of Danish people sounds funny when they venture into the English language. I'm Danish myself, but I'm all in on a cockney accent. I don't really know why 🤔

@damoclessword8078 3 жыл бұрын

I literally couldn’t understand anything in this video but I still watched to the end idk why it was just interesting

@VinhHan-yk4yt 3 жыл бұрын

you know it's gonna be good when there's THREE hazards

@GQuack 3 жыл бұрын

Ooh! New blue warning sign to mark the freezing temperatures, that's great! Overall, another interesting video, showing how cheap, green lasers can be really bad if misused.

@grecco_buckliano 3 жыл бұрын

thank you.

@alexp974 3 жыл бұрын

Great consumer info!

@PJHLR 3 жыл бұрын

Very well done. I was not aware of the IR hazzard at low temperatures. All of this danger simply because manufacturers are too cheap to add a low cost filter. They also fail to adequately warn against the hazzard.

@samiraperi467 3 жыл бұрын

7:38 Pet peeve: incorrect units. "DIODE LASER MAX OUTPUT

@hoorayforhawksbills 3 жыл бұрын

We all have dreams. Some of them just happen to include ionizing the air or lighting things on fire from a few kilometers away.

@nuclearshorts1243 3 жыл бұрын

Styropyro should show you a mere 100w can burn through metal. I could only imagine what a megawatt could do

@filanfyretracker 3 жыл бұрын

if someone could get 1MW of laser output from what I am guessing is two AAA or AAAA batteries, They would not only probably violate a laundry list of laws of physics but also would have every military on the phone with fat cost plus contracts for hand held laser rifles.

@hoorayforhawksbills 3 жыл бұрын

@@filanfyretracker oh you could definitely get a megawatt or two with the right capacitors. For a fairly brief time obviously.

@dalecarter923 3 жыл бұрын

How about 1.21 GW

@wilbur9416 2 жыл бұрын

Great intros on being safe period and great content

@nataskara1975 3 жыл бұрын

I love how he talks to us like we're masters at lasers too

@TAIR736 3 жыл бұрын

Yeah especially whe he shows graphs 😂😂

@JRQUION 2 жыл бұрын

Paraphrasing but Bart Simpson once said, you don't catch up by going slower than others

@hazex7563 Жыл бұрын

@@TAIR736 Fun Fact... What powers the internet is, people getting offended at the slightest hint of derision from total strangers, combined with condecending attitudes.

@tamashorneczki778 3 жыл бұрын

Thank you KZfaq, for putting this on my recommendations

@HelloKittyFanMan. 3 жыл бұрын

This is very interesting, thanks! I love videos like this and some from Action Lab and others, that show me interesting things that I didn't even know I was curious about but which simultaneously create and answer my curiousity!

@rufust33333333333333 3 жыл бұрын

This is awesome 😁

@hvnterblack 7 ай бұрын

Smarter everyday. Thanks.

@ghost_ship_supreme 3 жыл бұрын

I used a yard light one year. I turned it on but it wasn’t doing anything! Now I know why... good thing I never looked into it! Never look directly into any laser.