question:foldable-mini-spectrometer
question:foldable-mini-spectrometer


Author Comment Last activity Moderation
Nelari "I did just that, four months ago, so that problem has already been solved – but thanks all the same. However, I could not make sense of Spectral Wo..." | Read more » about 3 years ago
Skorex "Can you cut the bottom side, glowing with rainbow colors? Thank you  On Sat, May 25, 2019 at 6:26 PM \<notifications@publiclab.org> wrote: ..." | Read more » about 3 years ago
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Nelari " Thank you; I now have a meter that seems to work OK. I gave up on the paper version, though – it was just too wobbly. I used wood, instead, to get..." | Read more » over 3 years ago
warren " Hi! The bottom side with the purple tint is the one you want. There are some good pictures on these pages: https://publiclab.org/notes/warren/12-..." | Read more » over 3 years ago
UHF "DVDs work better with smaller track separation and therefore greater diffraction. " | Read more » almost 5 years ago
warren "Hi! There are a few posts exploring this question here: https://publiclab.org/questions/dsvilko/06-13-2017/any-way-to-improve-on-the-dvd-grating ..." | Read more » almost 5 years ago
warren "Indeed I think it's possible to answer this empirically - for example in @xose's, horizontal is the correct orientation. It's hard to describe ver..." | Read more » almost 6 years ago
xose " Hi @wlkwong! I've built my personal mini spectrometer using a 1" PVC tube. The collimation slit is attached to a 1" cap so I can pull it out and r..." | Read more » almost 6 years ago
warren "Just another note here -- starting to look for someone interested in creating an activity out of a beer's law demonstration -- for determining conc..." | Read more » about 6 years ago
stoft "@warren has a good point; the smaller the change in transmitted light (as a function of attenuation caused by concentration change) the greater the..." | Read more » over 6 years ago
gretchengehrke "Hi @FoxClass, This is a great question. As the other commenters have mentioned, to compare intensities across different wavelengths, an intensity ..." | Read more » over 6 years ago
warren "However, if it's possible to either turn off exposure compensation between your two scans, or to scan both spectra at the same time (side by side),..." | Read more » over 6 years ago
warren "Yes, as @stoft mentions, an absolute intensity calibration is not required for demonstrating the Beer Lambert law; @mathew refers to a post about g..." | Read more » over 6 years ago
stoft "The Beer-Lambert law primarily states there is a relationship between attenuation and wavelength of light through a substance. The attenuation is l..." | Read more » over 6 years ago
mathew "The spectrometer requires intensity calibration in order to detect color consistently. The active research is here: https://publiclab.org/notes/st..." | Read more » over 6 years ago