As a desert lizard stuck inside a room, I greatly appreciate these lights.

Lamps like these have been used to help children in arctic and sub-arctic regions as well. I found an article about it decades ago. There was a picture of a one room schoolhouse with a bunch of kids standing around a giant mercury lamp in nothing but their underclothes. It was apparently mandatory in some places to prevent bone issues.

You would love the UV lamps we make. 72” 46,800 watts. I’ve gotten sunburned from just a few seconds of light reflecting off of the floor.

I use these to help plants get ready for outside after starting them indoors over winter and early spring. It helps avoid sunburn.❤

9:04 I noticed the box states: "Unlike people, reptiles require UV-A rays to be able to perceive their surroundings effectively." I hadn't heard that before, but from what I can find it is true, at least for some reptiles.

Thanks for enLIGHTening us with the science everyone can understand!

Used those bulbs for many years when I had a box turtle in an indoor enclosure. You needed to replace them every 6-9 months due to the UV output dropping over time. A proper UV bulb is required for most reptiles kept in indoor enclosures.

I noticed one of the bulbs is an Arcadia bulb. A few years ago, Arcadia bulbs were difficult to find in the US. However, they are supposed to be much better quality reptile bulbs than other brands such as Repti-sun and Exo-terra. As a note, some rain forest reptiles also require these type of bulbs as well.

The exposure to ultraviolet B (UVB) light is necessary for humans as it plays a crucial role in the production of vitamin D in the body. Vitamin D is essential for bone health and is involved in various functions such as calcium regulation and immune system health. The primary source of vitamin D for humans is through cutaneous synthesis, which occurs when the skin is exposed to sunlight, particularly UVB radiation. When the skin is exposed to this radiation, an inactive form of vitamin D is converted into an active form that can be utilized by the body. However, the recommended amount of UVB exposure may vary depending on factors such as geographic location, season, skin color, and sunscreen use. Generally, experts recommend exposing a significant area of the skin (such as arms, legs, and face) to the sun for about 10 to 30 minutes, two to three times a week, to obtain adequate vitamin D. To ensure the presence of UVB, the shadows should be shorter than the height of the person. UVB radiation is most effective when the sun is at a certain angle in the sky. When the shadows are shorter than the height of a person, it indicates that the sun is high enough in the sky, allowing for a higher concentration of UVB rays to reach the skin. It is important to note that excessive exposure to UVB radiation can increase the risk of sunburn, premature skin aging, and even skin cancer. Therefore, it is essential to find a balance between adequate exposure for vitamin D production and protecting the skin from sun damage. In cases where sufficient sun exposure is not possible, obtaining vitamin D through diet or vitamin supplements may be necessary. Always consult a healthcare professional for specific guidance on the recommended amount of UVB exposure based on your location and individual circumstances.

Once I worked next to a black light bulb for a few hours while I was purifying water for an experiment for my undergrad thesis. I got the worst sunburn of my life without even noticing it.

It said 'only for reptiles' in the beginning of the video. The title and your channel told me the entire story from that.

Sealing Molten sulfur in glass ampule creates a sulfur vapour inside making it glow a brilliant blue cyan near a Tesla coil, maybe you could test it out? I've got some pictures too

metal clips have another problem, it shortens the lifespan of the fluorescent lamp, if you notice with time of use where the clip is, it starts to turn black

this reminds me of that one case, some years ago, where a club in china celebrated it's grand opening with a black light party, only lit with 60W UV-C tubes. they sure looked amazing, but...

Went to college in a place where we don't see the sun for 6 months (clouds & snow). Therapists would commonly prescribe short tanning lamp treatment as a first step for depression treatment. Worked for a lot of people. Given the choice between possible skin cancer and certain liver failure, most picked the former.

Hey, I’m a desert lizard stuck inside a home, and I feel great!

Are these good for Lounge Lizards or will normal black lights and polyester leisure suits suffice?

That would be something that people in my region might purchase. I live in NW Washington state, USA. We have 9-10 months cloud cover, so we get insufficient sun exposure. We suffer from Seasonal Affective Disorder, get Multiple Sclerosis at a higher rate than others, etc. Our physicians often recommend that we take vit D supplements, fish oil, and other over the counter products to combat it. This video is especially helpful for us! Thanks so much!

Thanks for this video! I hoped that you cover this topic with the UV-B lamps! I have heard that the UVB-content decreases over time and you have to replace the lamp after a year or so. People with no equipment but their eyes don't have a chance to see the "expiration" of the UVB part of these lamps. It still shines bright, though, in the rest of the spectrum.

Я даже не знал, что рептилиям требуется особое освещение и для них даже делают специальные лампы. Спасибо за науку!

Brainiac in 2026: Testing some X-ray and transmitter vacuum tubes to see if they emit UVB. Ngl it'd be a great project.

Mine most dangerous light was one that hit my head after it fell from celling. I'm not sure how much uvb it had but I remember Lots of "F" after it hit my skin...

I know nothing about lighting or lazers or Denmark but these videos are amazing. Hypnotic and informative

I have a UVB florescent for my lizard. The tank has a steel mesh that I cover with aluminum to maintain humidity - in only a few months, the UVB light burned hundreds of tiny holes through the aluminum in the pattern of the steel mesh. I gather that steel resists UV damage but aluminum does not!

I really love this channel… I remember the time when you where able to answer to every single comment XD I’m really proud that I found this channel so many years ago

Wow, I noticed a very low grid power there! Only 221.1V @ 49.98Hz? Is it always that low in Denmark? I've been to Denmark often, but never measured the outlet power. I'm used to seeing 238V-242V @ 50.02Hz out of the wall..

For the TL/DW this is a review of a reptile lamp, as reptiles require exposure to UVB light to produce Vitamin D3.

Cant wait to enjoy this video!

I like the work gloves for 10 seconds of UV exposure, a nice touch

Really very nice, thank you for this interesting video! I am amazed and a bit surprised that the spectrum is so well printed on the box, except for the horrible colors... And I did not realize that reptiles need this kind of light. Good stuff!

Correct me if I'm wrong but uvb and uvc are largely blocked by regular glass, so when these lights are running in an enclosed terrarium they pose no danger to you

Это лампы для содержания рептилий, без таких ламп много животных из пустынных биомов плохо себя чувствуют, у них появляются проблемы с усваиваением кальция. Появляются болезни кожи, развивается рахит. Так же падает общий тонус и активность. 🤓

Kinda tempting to get the lower output one for my room for the winter...

I was very happy 😃 when I got a new video notification 📢 from KZfaq. Thanks for this video

Thanks for the tan.

Thanks for enLIGHTening us with the science everyone can understand!. Thanks for enLIGHTening us with the science everyone can understand!.

I actually have a lizard, and wondered about the spectrum of these bulbs. I guess if they weren’t accurate, a lot of people’s lizards would be sick and die. Mine is very healthy, BTW.

i have been using those light and Mercury Vapor Bulb for more then 10 years for my reptiles

Thank you very nice❤

1:02 Lights, fixtures... now you need to buy some reptiles to go with the lights.

Pro tip: don't wear shorts and a tee shirt in a room full of welders for very much related reasons

Thanks 👍

nice video. are you going to do UVC germicidal lamps next?

i may have bought something similar to get some uv radiation in winter cus it seems to help my mental and physical health. ofcourse i checked that it doesn't have uvc and also i keep the dosage low enough so that my skin don't burn oh and also i wear sunglasses when i use it.

These bulbs could also be used in a plant growing tray I guess, but then again there are higher power UV lights available.

I use lights like these. Some reptiles absolutely need UVB, to prevent MBD (metabolic bone disease) as they use it to process calcium and get even get diseases if the Vitamin D isnt included in their diet or from the lamps, sometimes both. It has to do with their first pass metabolism among other things. I have them for my Leopard Geckos and as an extra thing (it also keeps mold away in a humid terrarium lol) for my snakes, which eat whole prey, contributing to them not needing it. Keep in mind in reference to animals the sun is much further away, and the various animals environment may normally filter the light specifically depending on location - less so in arid or desert environments, moreso in the tropical, subtropical or other environments which indicate use of 5.0 bulbs. Theres Mercury vapor bulbs that also provide heat and UVB in one bulb, various companies and methods etc that have varying quality - tho UVB is really what matters most, with UVA and such being helpful too (tho various species and even overall, its widely debated at least regarding specifics)

This is honestly quite an interesting choice of light, but it makes sense for its intended purpose, though I do wonder if the risk of DNA mutation is worth it. I'm not an expert on the matter, though desert reptiles do sound like a challenge to keep healthy thanks to lights like these. Great video as always!

Thank you.😊

mark zuckerberg is buying those in bulk

Hey Brainiac, what kind of spectrometer do you use? I am looking to get one myself, as the cheap handheld one I have is, well, not accurate.

If "only for reptiles" is not enough evidence that it is ONLY for reptiles, I don't know how else it could be noted...

oh this trube is made in Germany at 1:56 (might be Osram) ... 220V AC is a bit low for Denmark (see the "DKK"), it usually has 230V like Germany

I use a similar type uvb florescent bulb in a handheld medical unit to treat psoriasis with uvb light therapy in short exposures every 2 days can burn very quickly

I'd like to ask something: if you use this lamp in a terrarium and it is in your house isn't that UV light bad for you or the terrarium glass will filter it?

Looks like a good bump around 405...wonder if these would be good for curing resin

Which spectrometer do you use - please?

What's the spectrum of an old, off-the shelf CCFL? How does the spectrum of a new one compare to that of an old one?

Check the spectrum of some of those super cheap red light therapy led panels

So I am a desert lizard... I clicked like. 🦎

If you could spare the excess electricity cost, it would be very interesting if you could investigate the claims that these lamps need to be replaced before they visibly stop working, because of the degradation of the UV emission. If you could set one up on a timer to run for 12-16 hours every day for 6 months and then re-measure the spectrum, it could let the amateur reptile keepers among us know whether they really need to buy a new one every 6-9 months like the manufacturers (and internet) claim.

What spectrometer do you use?

you can power the bulbs from a high voltage source directly.

You revealed the answer at 1:34 for those not already aware of these. It states it on the tube.

Nice Video! :-)

If the spectrum meter shows UV wavelengths then why does the lamp display white light?

I guess some marketing guy cut off the black "borders" (UV-C / IR) of the spectrum leading to the shift.

What does the 75 mean in your channel name?

Hvor købte du rørene Braniac?

Favourite lights of Mark Zuckerberg

i'm a house plant not a desert lizard but close enough.

4:40, made it to low mun orbit, preparing for landing burn in T-00,00,02,00.000

UVB isn't what's DNA mutating. DNA mutation is only possible from 285 nm and lower wavelengths. Potassium gets ionized at those levels.

O̶N̸L̶Y̵ ̶F̶O̶R̷ ̷R̴E̶P̷T̸I̶L̶E̸S̵

*licks eyeballs*

Yes, that's totally me, a crazy wizard stuck at home. Like from me.

Do you maybe have a friends that is a Tig welder. I would love to se the spectrum of a TIG arc.

What protection did you use? From general understanding, Cotton and even polyester aren't great protectors of UV. Did you just slap thick layers of sunscreen to protect yourself when you recorded this video?

Plastic holders will no last long because of UV.

The kelvin ratings don't make sense. Why is the light bluer and colder when it's rating is higher? Normally higher kelvin means the light gets more yellow. Or am I missing something?

As a lizard person, I approve this video.

Don't tell mehow to live i use these in my office because I like the look mixed with ordinary lamps.

Why the thick orange gloves?

It didn't specify that it was a desert in our solar system

When the ex wife takes the house so you replace all the lights with these things

Both UVA & UVB can cause DNA damage. A=Aging & B=Burn. Thank you for your video and information.

Maybe someone else bought those cheap UV-B tubes for a solarium, with human users 😬

Does this mean that we are exposed to UV-B radiation under the sun?

(Boat cat meme) I need too buy a wide range spectrometer

Do "Sun" LED lamps work? Which is the best emulator of the real Sun?

Think about the light that would wipe the planet out if not for our atmosphere or magnetic field.

Noticed it said for reptiles only

I bet the houses of Klaus Schwab, Henry Kissinger, the Clintons etc have these in every room.

they say "desert", maybe it's just on another planet xD

Can't you give a desert reptile vitamin D supplements?

What languages do you speak?

I am an American, and I haven't heard alot of different versions of the English accents but your voice sounds identical to King Diamond, Thanks

Light CFL VS LED PHILIPS KRISBOW 3W 9W 5W 10W 12W 13W lndonesia 🇮🇩👍👍

That can be a strong light on your *EYES* so don't buy that light is too dangerous...

Mark Zuckerberg lamp

I was wondering why Hillary Clinton ordered so many of these.