| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| mimiss | "I did this! " | Read more » | about 5 years ago | |||
| warren | "Here's a convenient page to print a black square on the back! https://docs.google.com/presentation/d/1ATMBoR9voChWq-a4fTnyQvniVj2sEyn-ZookA3K-Uts/..." | Read more » | about 6 years ago | |||
| warren | "OK, my next thought on this would be to scan 2 at once instead of 3, so that at least any non-evenness would be symmetric horizontally. But I'm not..." | Read more » | over 6 years ago | |||
| programmer1200 | "Hi Warren I'm also working on a beers law based machine for testing one cuvette at a time and measuring the amount of light penetrating through the..." | Read more » | over 6 years ago | |||
| zengirl2 | "Yes, this seems to be an easy solution :) " | Read more » | over 6 years ago | |||
| warren | "I think the light is not evenly distributed, and in the scan I took, there's just more light in the middle. I'd like to correct for this but it's e..." | Read more » | over 6 years ago | |||
| warren | "I'm sorry - the tag should be #gain-control -- and although I don't have time myself at this point to do a live chat, you could perhaps ask on the ..." | Read more » | over 7 years ago | |||
| Iqbaljurist | "Dear Warren, @warren I could not click the hashtag. Also, could we have a live chat which we can discuss this topic any further? I do wait your r..." | Read more » | over 7 years ago | |||
| warren | "Hi, there are some steps for intensity calibration outlined in #exposure-calibration, but they're not that easy to follow -- we would love if you'd..." | Read more » | over 7 years ago | |||
| Iqbaljurist | "@cfastie Chris, I am now able to measure my spectra using iPhone, i dont know why using mobile device is way more effective than PC. Also, how do..." | Read more » | over 7 years ago | |||
| cfastie | "Jurist, I tried to calibrate your spectrum but Spectral Workbench would not complete the task. I don't know why it did not work. The intensity sc..." | Read more » | over 7 years ago | |||
| Iqbaljurist | "@warren Hi Warren, let me introduce myself. My name is jurist, im freshmen of physics engineering student in University of Gadjah Mada. Currently,..." | Read more » | over 7 years ago | |||
| warren | "I'm also looking for a better photo of a Desktop Spectrometry Starter Kit pointed at a CFL bulb, so if you have one please help me improve this post! " | Read more » | over 7 years ago | |||
| shubham | "Simply use some nailpolish remover (from your sister's cabinet :P) to remove all the dye within seconds. You can make reflective as well as clear t..." | Read more » | about 8 years ago | |||
| DonV | "I used Everclear 180 proof (ethanol) and the point of a sharp Exacto knife to both tease the layers apart and remove all the dye. The ethanol seem..." | Read more » | about 8 years ago | |||
| chongyukwai | "stick the plastic tape onto the large aluminium part, tease off the tape and at the same time the aluminium part will be tease off at the same time..." | Read more » | over 8 years ago | |||
| warren | "Translation: I submerged the DVD in diluted hydrochloric acid, of the kind used in sanitary cleaning, and it eliminated the aluminum residue, and ..." | Read more » | about 9 years ago | |||
| edilberto | "Yo sumergí el el dvd en ácido clorhídrico diluido, del que se emplea en limpieza sanitaria, y se eliminaron los residuos de aluminio, no daña al po..." | Read more » | about 9 years ago | |||
| mathew | "confirmed. Denatured alcohol pulled it off and dried without residue. That was really fast--it makes me wonder if we should use this method to mak..." | Read more » | about 9 years ago | |||
| sharky | "Ethanol remove immediately organic dye and evaporates in few seconds. " | Read more » | about 9 years ago | |||
| MrBumper | "Matthew - I found that static soaking helps soften the dye. But then the dissolved dye just sits in solution above the surface of the DVD-R fragmen..." | Read more » | about 9 years ago | |||
| mathew | "I just tried this out-- I didn't find warm water alone effective, nor did I find just soaking in soapy water enough to remove the dye. I found tha..." | Read more » | about 9 years ago | |||
| stevie | "In regards to your comment "grooves in the DVD-R surface must be oriented as close to parallel with the spectrometer slit as possible," in the past..." | Read more » | about 9 years ago | |||
| MrBumper | "As far as I know the guide groove on a DVD+R would be indistinguishable from that on DVD-R as far as using it for a diffraction grating is concerne..." | Read more » | over 9 years ago |