DIY Spectroscopy: The Basics
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- Опубликовано: 29 май 2019
- In this Video im finally dipping my Toes into the Field of Spectroscopy / Spectrometry. I wanted to learn and try out some Stuff in this field for a long time, just never foud the time ;) Just a basic how to make one and whats cool to look at for now. Next Video ill try to build a proper Spectrometer and connect it to some Software, maybe well get us a little "Proper Data" this way! :)
Background Music by Daniel Sommer:
www.danielsommer.biz/ 
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Thank you for your video! It's cool to finally find someone who not only had built diy spectroscope but also covered not only sunlight but other light sources as well
This video is amazing! You have the ability to present optical physics as "how to do it at home" at the lowest possible budget. In means of introduction to advanced science, you are among those who stand out with easy and effective demonstrations. Keep it that way :) Best 73's from Norway.
Wow, thank you for youre nice comment! :D
The gas filled tubes should flouresce if you put them near your plasma ball. CFL and small flourescent tubes WILL light up near a plasma ball. Point your scope at the plasma ball and show your viewers the results
Thank you for the informative and entertaining content. I'm moving on to the next video in the series.
Been looking for a channel like this for ages and only now finding it 😮
Thanks for sharing your knowledge, I learned a lot in this short time.
Really good video. Thanks so much for all of it especially the DIY viewer from cardboard.
Nice video. If you like to see some interesting lines try to find neodymium glass. If you put that between you spectroscope and light source you we'll see really nice absorption lines.
you're a hero man
COSMIC BARCODES!!!!
Thank you for explaining why not to use a PVC tube , I was going to do that. but now i look for something else.
Dude. A cosmic bar code. Talking with people who are not familiar with energy this topic can be difficult to talk about. But i love that explanation. Straight forward and relatable. Thanks for the viddo senior.
excellent explanation. Where is part 2?
A hand-held device that could identify thousands of substances by their spectra would be useful for a wide variety of purposes. Such a thing doesn't seem to exist. It seems like it could be a DIY project using an Arduino or maybe something more powerful. It could identify types of plastic, plant species from leaves, blood or wine, what illicit drugs actually are, metal alloys, and I'm sure many more.
Could you put a cuvette with a liquid sample in front of a light and get a spectrum to identify the liquid? Thanks great work!
honestly i am not shure, but i guess in theory mayyybe yes? ;) there are many different techniques of spectroscopy, its a really interesting but also diverse and complex field. i got more into gamma spectroscopy recently since meanwhile there are affordable gamma spectrometers for hobbyists vailable :)
Great video! I tried making a spectrometer myself using a webcam without IR/UV-Filter and it kind of works, but I never got it to work well. Getting the right amount of light is a huge problem for me, and there are always reflections in the far UV/IR of my spectra. It's also not really exact and my spectra are kind of messy with very distorted intensities. Your spectra look very nice, what exactly do you use for them? That spectroscope mounted to your phone? I hope I can improve my spectrometer using your next few videos, mine works using a CD I removed the metal film from as diffraction grating. Using the reflection to send it through the grating two times might improve mine, I really don't know, it took me several hours to get at least some spectrum from it... if you have some tips or encountered similar problems, I'd be happy to know how you solved them.
(Ich bin übrigens Deutsch, Antworten gerne auch auf Deutsch, wenn das geht)
..my plans also involve a Webcam, think ill try something similar for the next video like you did :) I ordered some "Diffraction Gratings" for very very cheap (i ordered 10, i can send you 1 or 2 to germany if you want?) i read that these work pretty good! ...maybe also one thaught of mine.. did you try with a piece of the cd without removing the thin film? i could imagine you get difformations when you remove that thin film, maybe the cd plastic helps to keep stuff straight? (i was quite amazed how detailed the cd/cardboard one looked, just used the other one because its easyer to mount in the end) Yes in the end i used the little plastic spectroscope from the china shop with my camera, this one uses a classical prism (not shure if glass or acrylic or something..) I think most of the problems are with the camera settings (focus, exposure time), maybe try "Sharpcap" or a similar software with youre webcam, its for astronomy but its a great recording software for all kinds of webcams! lets you mess with all kinds of settings :) PS: hope you dont mind i reply in english, but since the majority of my viewers seem to be from english speaking countries, id like to keep my channel in that language as far as possible ;)
@@BremsstrahlungChannel Thanks for the reply, I'm fine with English. For now, I don't think using an actual diffraction grating would make much of a difference, but thanks for the offer. To remove the thin film from the CD, I used some electrical tape, which works very well once there is a scratch to start. As it's very gentle, it shouldn't deform the CD to any noticeable extent, so I don't think that's the problem. I tested the CD's transmittance using a commercial spectrometer and it actually has a bit of weird absorbance in the red part of the spectrum, but nothing that should affect things too much. I actually believe that my webcam is the greatest problem: I use a "Trust SpotLight Pro" (as far as I still remember) because its UV/IR filter is kind of easy to remove, but it has some weird automatic adjustment, horrible resolution and probably is the cause of the differences in sensibility to certain wavelengths, as the camera itself is probably less sensitive to blue and red. I can actually change a few settings for it, but I can try Sharpcap to change some more, thanks for the tip! I've also had trouble finding good software. "Theremino spectrometer" is something like the standard software for DIY spectrometers and worked mostly well for me, but my spectrum was so narrow that Theremino didn't allow me to calibrate it correctly, which makes it impossible to get exact numbers so it was useless to me. I then used "Spectragryph", which probably is a great program, but very hard to work with as it hasn't got any good explanation. I spent hours messing around until I got some real spectra. It's still kind of weird to work with and also just a free test version, although you can apparently contact the developer and get the full version for free, so I'm still looking around for better software that actually gets live data instead of saved images and forms a calibratable spectrum from it. I had my spectrometer laying around as-is for a while, but maybe it's time to make a few adjustments. I look forward to hearing from your experiences!
By the way, I also found a tiny and incredibly cheap gamma spectrometer on eBay (60€) which I'll probably buy, if you're interested I could try it out and send you the results. Judging from its size, though, it might take days to get a reasonable spectrum.
@@swabianscience Wow! Gamma Spectrometer for 60 bucks sounds very interesting! ;) im curious how it works out for you! :) About the Webcams, i used some in the past for Astrophotography, they are really good to capture Planets and close us of the Moon! For Astronomy i remove the lens and the filter, i have good exerience with a Logitech C270. But in general i am starting to buy every Webcam i can find in Flea Markets / Thrift shops, they are mostly around 5 bucks, and i guess its good to try some different models :)
@@BremsstrahlungChannel Sounds good, I'll keep my eyes open for cheap webcams, and if you find one that works especially well, I might just buy it directly. I could probably mount one to my telescope too, until now I've only made photos by holding my phone to it, and the results are - as you can probably imagine - not really great and often the object moved away before I could even take a picture. I'll let you know how the gamma spectrometer works out, it might take several weeks to months though.
Nice video!
Which one do u prefer? A blank CD disk or burnt one?
honestly i didnt compare blank vs burnt CDs.. but i have to say i liked the cheap little plastic Spectrograph more then the CD version, it ws easyer to take photos with this ;)
Dear Sir,
Actually, I want to plot that curve from Spectra getting from Smart Phone for different concentrations of DYE on a single window for wavelength-Absorbance.PFA. Thanks. Seeking Software tutorial of software for that like IMAGE J Or any other else.
Actually, I want to plot absorbance & wavelength curves in a single frame or window with all possible concentrations of methylene blue DYE. From spectra
I want you to guide me about that software for the requirements. Spectra is also attached as my possible setup. This means an optical path for the spectrophotometer
You know I bought one of those plastic diffraction scopes. It looked like a toy but I was very impressed.oh and by the way you are too cool. Haha
Servus, in deutsch wäre es besser...
Sonst ganz interessant und erstaunlich wie einfach manches sein kann...
Danke.
Where do we find the hand spectroscope?
..i dont want to do commercials here, but its from aliexress ;) i guess youll fint these on most chinese online shops, should cost around 10 bucks! ...its plastic, but im quite happy with the results!