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Author Comment Last activity Moderation
Bronwen " Oh, wow, I totally missed the mark, that's even cooler. " | Read more » over 3 years ago
warren "Although, "tell these apart" may also be a relative term. When you see the light or dark regions, you dont see the pits themselves but rather diffe..." | Read more » over 3 years ago
warren "And to answer a question above, I /think/ this would put all "long" pits in the 1 regions, and all "short" pits in the 0 regions. So, you'd have to..." | Read more » over 3 years ago
warren "Oh, actually this technique doesn't use a laser cutter - it forms an image by copying data onto the DVD at differing densities, so that the actual ..." | Read more » over 3 years ago
Bronwen " You know what, forget what I said about kerf width-- I'm used to the range I listed, but I'm finding some charts for lasers that makes it seem lik..." | Read more » over 3 years ago
Bronwen "Oh cool, this is a super interesting question. I think this would be tricky to do at the scale that our calibration slides currently have (the rul..." | Read more » over 3 years ago
warren "That's right! We thought 0-100 would be more familiar to people, but the original values are preserved in the raw data. " | Read more » over 4 years ago
Dr_Z "So I take it the percentages that come from scrolling along the graph are the ratio of the data pixel values to the max of 255, correct? " | Read more » over 4 years ago
warren "They are the RGB image data pixel values, from 0-255. And note that due to image processing, noise, etc, this may not directly correspond to absorb..." | Read more » over 4 years ago
xose "Hi there! I've been trying to use the spectralworkbench with IOS with no success using Browser app. That web browser is suupposed to use WebRTC but..." | Read more » almost 6 years ago
warren "On iOS, there is the Bowser browser, which I've heard has the correct features to work with Spectral Workbench live recording, but I've never been ..." | Read more » almost 6 years ago
liz "There is no iPhone app, or any app, actually! To capture a spectrum with iPhone, use your camera to take a still picture of the spectra and then up..." | Read more » almost 6 years ago
liz "Hi @CanfieldC ! It's great to meet you. I was the one who organized what i now understand to be your students' work into https://publiclab.org/note..." | Read more » almost 6 years ago
chem350vsap "@cfastie Thank you for the comment, and we do agree that it was quite an interesting project, and we very much appreciate the link to the spectra. ..." | Read more » over 9 years ago
chem350vsap "We added links to the spectra we took. LEDs would be an interesting comparison. I guess the range of the spectrum would all depend on the type of p..." | Read more » over 9 years ago
cfastie "This was a good project. Take a look at this figure of a spectrum of a fluorescent lamp: http://en.wikipedia.org/wiki/File:Fluorescent_lighting_sp..." | Read more » over 9 years ago
warren "Great write-up. Do you have any photos or links to spectra? I'm curious about white LEDs, because if we ever make a built-in light source for the ..." | Read more » over 9 years ago