| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| warren | "Super tnx! " | Read more » | over 9 years ago | |||
| mathew | "that is the latest file, yes. its only slightly modified for die cutting. " | Read more » | over 9 years ago | |||
| warren | "It looks like the cut files are both the same, but I dug out the 2nd file from the staff design folder -- is this it? all-together-10-2.pdf " | Read more » | over 9 years ago | |||
| mathew | "wow! that's a real clear match! " | Read more » | over 9 years ago | |||
| chongyukwai | "My physical address has been sent to this Email address:jeff@unterbahn.com. I don't mind you guys send it to me and I will do the test! " | Read more » | over 9 years ago | |||
| warren | "Oh, we'd be happy to send you one if you'd do the test! " | Read more » | over 9 years ago | |||
| chongyukwai | "I am willing to test the oil testing kit but I don't have any UV laser " | Read more » | over 9 years ago | |||
| warren | "Hi, @chongyukwai - would you be willing to try it out and document the results if we sent you an Oil Testing Kit? " | Read more » | over 9 years ago | |||
| mathew | "hmm.. Looks like the PCR tubes are close to perfect-- but they're round, which will be troublesome for aligning the laser light path, although we c..." | Read more » | over 9 years ago | |||
| warren | "Huh, interesting! Are they available in materials which don't fluoresce? Do you have a UV laser to test that out with and would you be able to post..." | Read more » | over 9 years ago | |||
| chongyukwai | "PCR tube fits your requirement of the container I think! " | Read more » | over 9 years ago | |||
| btbonval | "These instructions are really great, except I feel like there's a gap between the laser attenuator and the completed assembly. "Place in front of ..." | Read more » | over 9 years ago | |||
| liz | "can i just say i am still really into this " | Read more » | almost 10 years ago | |||
| liz | "this is so great! a very important step forward! " | Read more » | almost 10 years ago | |||
| patcoyle | "Ingenious, seems like a great approach. " | Read more » | almost 10 years ago | |||
| ygzstc | "Himmm...I was aware of straylight's great research note but the linearity you mentioned there is not about webcam but about peak heights vs. concen..." | Read more » | about 10 years ago | |||
| warren | "Automatic exposure control is not disabled -- but some tests have shown webcams to be pretty linear: http://publiclab.org/notes/straylight/05-13-20..." | Read more » | about 10 years ago | |||
| ygzstc | "Thanks Chris :) As far as I know, this seems to be the standard way to compare absorbance spectra...But modelling part may vary depending on the t..." | Read more » | about 10 years ago | |||
| cfastie | "I proclaim this study to be highly replicable, and encourage others to reproduce Yagiz's results. Not that we should have any doubts about Yagiz's ..." | Read more » | about 10 years ago | |||
| mathew | "updates: http://publiclab.org/notes/mathew/12-06-2014/a-paper-spectrometer-design-pt-2 " | Read more » | about 10 years ago | |||
| mathew | "Thats a good idea. I was thinking of making a version of the paper grating support that had a protractor-like series of angles so someone could fo..." | Read more » | about 10 years ago | |||
| cfastie | "Mat, That's a pretty nice spectrum. Are you going to try adjusting the grating angle by 5° or so in either direction? I'm not sure it would make an..." | Read more » | about 10 years ago | |||
| mathew | "@spectraljugad The distances and angles come from @cfastie's empirical tests linked above in "relationship between grating, slit, and camera" for s..." | Read more » | about 10 years ago | |||
| spectraljugad | "Hi Mathew, Nice work and than you for posting detailed steps. I have two questions: Why is DVD diffraction grating pasted at 60° angle? How do ..." | Read more » | about 10 years ago |