Bananas can detect invisible light?!?
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- Опубликовано: 29 сен 2022
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In this video, I will test if something as common as a banana can be used to detect invisible UVC light. Will it react to UVC only or does UVA and heat from a lamp have an effect too? And can you get sunscreen that protects against UVC?
As a bonus, I also share a nice recipe for a barbeque banana dessert :)
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Video including suncreen, initial test of the banana and spectrum of sunlight: • Handheld DNA eraser?!?
Video on odd hybrid UVC lamp: • Ingenious hybrid lamp ...
Did you miss one of my videos?: / brainiac75
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#Banana #UVC #Sunscreen 
Наука
casually wiping lotion on a banana
Felt surprisingly natural to me :D I have done weirder things in my videos... Thanks for the early watch and comment!
Imagine the comments' section on this shot, but then, in -say- 2012.. Ahh, the horror.
@@brainiac75 …
I didn't even know about the effect UVC has towards bananas, and it's honestly quite interesting. My real question is: How many people are gonna try the dessert recipe listed in the video? Other than that, this was a great watch, and I can't wait for your next experiment, whatever it may be!
I was sceptical but had credible feedback from people sterilizing groceries with UVC and noticing bananas reaction. I wonder why they are particularly susceptible? In any case, it is a good demonstration of the impact of UVC light over visible light! More to come and thanks for watching :)
@@brainiac75 It would be a cool little experiment/demonstration to try using a black and white photo negative (colour photo negatives don't work so well) against the banana skin with UVC lamp to try develop a photograph on the banana skin. I did this experiment back in 1990 with success. I posted a comment on your other video about how I did my experiment.
Skeptics said it was impossible as the camera film doesn't let UVC pass through the clear film material. I guess I must have dreamed those several days experimenting or just got lucky with the photo film type, lol.
As we can see from this video, the best sunscreen is actually electrical tape. I know that's what I use!
🤣🤣🤣
It's the best skin protection for those of us severely demelanated folks! Lolol
I'm starting to wonder if he's secretly a super villain and these videos are research notes.
What my family usually does with BBQ banana is to cut a slit in it, put milk chocolate in (more is better) wrap in foil and put on the coals after making a meal when they arnen't quite as hot anymore but still hot.
Yummy, chocolate goes well with bananas too. Like in the classic banana split. Thanks for the early watch!
What a fantastic idea!!
If you have excess bananas after the coals have gone cold, try let them ripen well - peel them, add a popcicle stick in one end and freeze it.
It makes a really good banana ice - even better after a few minutes (a fully frozen banana is a bit hard)
I wonder how well it will go if you could freeze one of the BBQ'ed with milk chocolate in it :ø)
@@EgonSorensen Interesting but probably not with the milk chocolate in my experience it becomes rock hard when frozen and what I like about chocolate bananas is the molten chocolate with hot banana.
Sounds delicious
I think normal glass at least partially blocks UVC. That is why UVC bulbs are made of quartz glass. It is a shame quartz lenses are expensive because it would be cool to use a banana as photographic film. I'm not sure if aluminum reflects UVC but if it does, perhaps you could use an old aluminum coated telescope mirror to take a picture of a banana on a banana. Might need a very long exposure though.
You can get a wide variety of near Infrared colored LEDs.
UV LED technology has come a long way with some very recent breakthroughs. Just this year I got an 18W LED 255nm UVC flashlight, that I use for fluorescent rock/mineral hunting. It's tiny, but focused and has a similar output to a large 35W fluorescent bulb lamp I used to use. I was able to turn a banana red with about 5 minutes of exposure. (Yes, I wear appropriate safety gear.)
Wow!
For anyone interested (and in the US), I got it from 'Engenious Designs.' (Not paid for this, just a happy customer.) Their LED flashlights range from $95-$350 and come in UVA, UVB and UVC, all with VIS block/UV pass filters. The latter two just came out earlier this year with new LED advancements.
The UVB/midwave I most recently got, has helped me to discover new minerals and rocks previously unknown to fluoresce. It's a pretty exciting time for the hobby. :)
@@codbug That's really interesting. I've always been fascinated with UV and fluorescent (and glow in the dark) items of all sorts since I was a kid (I'm 47 now). I just never had the money for the more serious equipment and materials. Though I have been messing about with a UV laser and a panel with a glow in the dark covering drawing stuff on it using the laser. I burned the back of my hand when I focused the beam to a fine point though there was no injury, it hurt. lol
@@EzeePosseTV Nice, I've always wanted a decent UV laser, closest I've got is some cheap ~5mw 405nm purple laser pointer. With blue blocking safety glasses you can still see good fluorescence on some minerals with it though. I too am generally obsessed with fluorescence and phosphorescence (well, light and the EM spectrum in general). Started when I got a blacklight for my 13th birthday after having a cool science teacher who introduced us to them. I'm 40 now.
@@codbug Aah, I was the same. I got a black-light 2 foot tube and ballast after seeing one for sale cheap in my mid teens. I then bought fluorescent model paints and painted trippy/psychedelic artistic designs on my bedroom wall that looked amazing under the black light. Yes I got the 405nm laser too but mine is more powerful than the 5mw stated on the label. I got a green and a red one too, I want a blue one too but they are pricey af. I love going outsie at night when there is a bit of fog/mist and fire up the lasers. Those beams are bright and go for miles, lol
The opening line killed me XD
I would like the banana to be exposed to the UVC in an inert atmosphere (such as argon) to eliminate the possibility for the browning of the banana skin being caused by actual ozone generation as opposed to the direct result of UVC.
For the record I don't really expect this to be terribly significant, but for the sake of completeness if you ever do more banana testing you should actually measure the IR transmittance of your window. Also, when close enough some heat will conduct/convect down as well as radiate so even a perfect window will make a little difference to temperature experienced by banana. I also noticed that in every trial you placed the extra-hot base of the lamp at the UV-exposed end of the banana. I do not doubt the UVC sensitivity of the humble banana, but those would be interesting things to consider if you ever revisit this. Of course if your meter isn't good in that range it would do about as well to just feel the temperature difference with a thin leather work glove on your hand where the banana would be. Pretty well all of the temperature confusion goes away though if you just place the lamp a meter or so away and leave it for a couple of hours.
Well I would not want to touch my banana for 15 minutes.
…let me lube up the banana 😂
Wish I could say it is the weirdest thing I have done in a video, but no. Not even close x) Thanks for the early watch!
They should have been eating bananas on the set in the Czech Republic of "Blade II", Guillermo del Toro thought that some old military blue lights looked extra special (UVC), and as it says on IMDB "Over 30 members of the cast and crew were temporarily blinded by the misuse of UV lights in the vampire autopsy scene."
Kris, get the (slightly radioactive) banana!
I love your content so much, thank you for making it!!! 😊😊
I always learn something new and interesting with your videos thank you for your time and dedication.
I remember going on a family road trip in the Northern Territory of Australia and we got some fresh bananas straight from the farm. They were sitting in the back of the car in direct sunlight for 3-4 hour drive. When we got to our destination they all looked like they had been cooked by UV like in your video. Makes sense as not only were we getting more direct sunlight but also the massive hole in the ozone layer over Australia.
They still tasted wonderful though.
7:30 "Alright, let me lube up the banana" 🤣
hahaha
Hej Brian fedt at du stadig laver videoer🎉😊
Today I learned there exists industrial/professional sun cream.
Outfitted like a burglar, puts sun screen on banana. Love your passion for science!
Great video ! Also cool 400W Mercury Vapor lamp : )
Another banana experiment! Exciting!
Radioactive, universal size scale and now UVC indicator. The science value of bananas is bonkers :D Thanks for the early watch!
Best start to any video: HI! It's time, to tan a banana.
4:52 you can never be too safe, unless of course your PPE becomes a hazard 😆
I simply love how you say "banana" :D
Great and Interesting Video! 👍
Thanks, JustPyro. Much more to come. And thanks for the early watch!
You are legend on all video in yt app
You can't even say, 'No 🍌🍌🍌 bananas were hurt during the making of this video.'😱😱😱🤔🤔🙄🙄 Not a good day to be a banana... A great day to learn some real science. And a recipe. Perfect Friday video. Cheers and thanks from England.
I assume they were humanely despatched.
I read somewhere online that in the UK, bananas that aren't compliant with CE Standards are labelled as "curved yellow fruit" 🍌😂
4:58 He looks like a PMC in Tarkov
I dunno why but the brief detour into cooking channel territory made me laugh. It makes sense don't get me wrong, cooking is a good source of preexisting knowledge on how bananas react to heat. It was just funny.
Oh No!
Someone ate my UVC light detector! ;D :P
I wonder if you could use cyanotype sensitiser that's been modified to have UVA/UVB absorbing compounds so to shift the spectral response to UVC? As a cheaper alternative to specialised glass filters that are UVC passband
Mind you cyanotype reacts much differently to different UV sources, my UVC tubes I tried to use for PCB manufacturering (to much fail lol) would instantanously expose the sensitised paper, like, < 5 seconds. where is my blacklight tubes which had same rating took upwards of a few minutes
4:52 smart Anomaly
0:48 i typically think of UV as "higher" than visible light since it is of higher energy and frequency. but maybe your perspective is more accurate since it is based on the main characteristic of light, i.e., its wavelength.
How exactly is wavelength any more important than the other characteristics? They're all pretty much interchangeable
wavelength is independent of relativism.
Maybe some hardbass to go with that green ski mask haha.
Hehe, it is unbelievably warm to wear indoors. Slow movements to soothing music is more suitable ;) Thanks for the early watch!
You should do testing and see what uv is best for uv cure glues
Yep, can confirm the result, had a very similar test myself back when corona was raging wild.
@E Van Yeah, I am sure you were too busy licking door handles.
im thinking if sunscreen works by transforming the uvc light to heat, you should also notice a temperature difference between the treated and untreated side of the banana when watching the process with a thermal imaging camera
Hi! Are you using the Ajax smart socket?
just love a light the buzzzes great video 2x👍
After this video, I love the word banana.
I want to see how diode laser linewidth and center wavelength are affected by diode temperature. Can you do a video on this? Thanks!
0:21 - I have the same 400w UV cannon. We use it for halloween. It's so good.
Much better than the terrible LED blacklight options available on the market.
>the first 8 seconds< 😧
>the remaining seconds< 🤔🤯
Imagine the people who didn't have their volume on and just saw a guy lubing a banana in the beginning 💀😂
You investigated it further!
The DNA eraser video is finally complete!
Is it possible to focus the uvc light into a small spot with a lens and see how far or deep it burns into the banana.
bananas are also really good at detecting visible light
if you can see it, light is present
Good old man is back 😀
Well, never really left? Been going with monthly uploads for years now :) Thanks for the early watch!
Yes
Man found more users for a banana nice
Bananas are surprisingly universal... Taste well too :D Thanks for the early watch!
@@brainiac75 yeah :D
Bro, cameraman survived the radiation
So, is the black tape absorbing the uvc, insulating the banana, or both?
The lubed up banana made me pucker a little 😱
Surely, not lubing it would be worse...
Uvc is bloody scary. Is there a UVD spectrum section or is it all “sub UVC”? If so just how horrifying is that and what even creates that?
So, here's an idea; how about letting a bunch of bananas get to that over ripe state that illuminates the skin. Then try scraping that off to see if it will remain phosphorescent after it's dried...
If so, maybe one could make a sensor out of that....?
i have to point out that the infrared filter might be blocking some heat, and the sunscreen might be absorbing some of the heat. if you want to really prove it, maybe putting normal (uva/b only) sunscreen on one side and the industral (uva/b/c) sunscreen on the other side would be a more equivalent test
I don't think that would change anything, but that is probably the better methodology there.
2:22 is it fluorescent, or is it... *phosphorouscent*
lol
Wouldn't a "specialized infrared lamp" just be known as a heating element?
My question is what did the banana taste like after the test?
idk
👍
Doesn't that black tape take care of the blocking UVC and not blocking heat?
How do they use ultraviolet emissions for sterilization while it is destructive?
👌
If it was the heat, you would expect the black tape to have warped or melted..
Try using a ripe banana, those are super green...
Episode 2 of "banana for scale"
If you put a banana in the freezer it will also turn completely black and get limp like hell
+Brainiac75 Cinnamon with grilled bananas are very tasty too!
3:22 looks like chocolate icing on the banana
honestly I don't want to be a banana under UVC...
*OOO BANANA*
What about UV B ?
eyy new video :)
How is it that when You try to tan a banana it's Science and when I try to do it's Indecent Exposure?
Is there such a thing as a UV-C laser? 🤔
but how does this effect bananas phoning capabilities?
It's said that UVC rays from the sun isn't supposed to reach ground level. I know my skin has not been lying to me for years. Seems to burn more when Im close to a cell tower 🤔
Maybe you should buy some of that industrial sun lotion.
Haha, bullshit lol
thumbnail: banana burglar?
Quite a banana of a video.
I had assumed there would be cinnamon in the banana recipe. Forgive me for stereotyping Danish dessert practices.
Sikke en skuffelse med den der røde lampe der kunne fornemme du også selv var skuffet hehe
Let's genetically modify bananas for UVC detection! How hard can it be??
Yes please :D Or just something to smear on them to make them more sensitive... Thanks for the early watch!
Bananatan, ba naa banana, bananatan ba bana na. Bananatan ba na banana banana bana ta ta ta tan
😀
Makes me feel sad that you can't even see a bit of 365 nm light :C
Okay fine i will use 30 SPF or more on my banana outside... grr
So... Answer is both Yes and No?
Notification Squad!
Thanks for the early watch ;) Glad to see notifications are working!
Honestly I would not do sun tans in sun beds it would likely cuase cancer! ☢️ 🌞
Why is Boris's cousin testing bananas?
Brainiac is Anomaly?
Hi
Hi
Hi
I'm just going to conclude that anyone talking about the UV detection abilities of bananas is referring to 2:24.
The browning from the UVC tests just seems like regular burning caused by the energy you're dumping into it rather than any particular interaction with UVC light.
That industrial sunscreen does not look good for the skin
could you be a bit more specific with "contains heat"? i'm sure you mean "infrared radiation", right?
I don't mention 'contains heat' in the video? I mention convective heat (not IR), conductive heat (not IR) and heat radiation (IR). Hope that clarifies. And thanks for the early watch, Justin!
He looks like boris.
just buy something fluorescent. more simple and easy.
It won't differentiate between UVC, B, A and violet light.
he protects himself but not those poor plants in the background . U MONSTER!!!!!!!!!!!
Ah, the power of the inverse square law will protect them enough for a while ;) Thanks for watching!