| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| Pushpaw | "OK well if I remember rightly Settings as you show above doesn't change the camera settings. It allows you to select your sample slice through the ..." | Read more » | almost 6 years ago | |||
| Tomas0413 | "Also tried both Safari and Firefox (while having Chrome closed). In both cases, there was a request for the permission to use the USB webcam, but n..." | Read more » | almost 6 years ago | |||
| Tomas0413 | "Also worth noting that when I press on "Settings" here, nothing happens: " | Read more » | almost 6 years ago | |||
| Tomas0413 | "I should also add that the spectrometer connected to the MacBook, so checking how to control the USB webcam settings (hopefully for free, as some p..." | Read more » | almost 6 years ago | |||
| Tomas0413 | "Warren and Pushpaw, thanks a lot for the suggestions, I'm still looking at multiple things you suggested. This is what I can confirm right now: 1...." | Read more » | almost 6 years ago | |||
| Pushpaw | "Darn - just went to edit a long answer and the PL web site deleted my save. Check the camera in the spectrometer works just as a web cam. If you ha..." | Read more » | almost 6 years ago | |||
| Pushpaw | "I would thing the first thing to check is whether or not the camera is working. Try removing the grating support or even pull the base out of the b..." | Read more » | almost 6 years ago | |||
| warren | "Hi! Sorry you're having trouble. My first thought is what direction are the grating lines going? They should be horizontal, or for the DVD, the edg..." | Read more » | almost 6 years ago | |||
| dsvilko | "Ups, I meant mercury, not sodium, of course. The line I can't identify is the one at 445.1 and 445.9nm. Any ideas? Also, are the two faint lines on..." | Read more » | almost 7 years ago | |||
| cfastie | "I didn't know sodium was used as a phosphor in CFL lamps. That green line is one of the brightest in CFL spectra and in all mercury spectra, and me..." | Read more » | almost 7 years ago | |||
| dsvilko | "By comparing my spectra of the Sun (more lines for precise polinomial callibration) with that of the CFL lamp, I can confirm that the green line is..." | Read more » | almost 7 years ago | |||
| Vman | "Thank you so much for the idea on using heatshrink material as a material for making the slit. This is better than paper or cardboard because it di..." | Read more » | about 7 years ago | |||
| liz | "Thanks @zega! " | Read more » | over 7 years ago | |||
| zega | "Oh and i suggest using QTI plot (you can zoom into graph data way better then excel, plot traces with just right click/plot) very nice open source ..." | Read more » | over 7 years ago | |||
| zega | "Yes i do, here: FC__long.txt " | Read more » | over 7 years ago | |||
| warren | "Oh, great -- do you have raw data for these as well, like CSVs? " | Read more » | over 7 years ago | |||
| zega | "I will start with long CFL tubes that i just did... Unfortunately i don't have bare tube (diffuser in front/office lights) that might play same ro..." | Read more » | over 7 years ago | |||
| cfastie | "Hi Robert, In this note and comments we were lamenting the lack of replicate spectra of CFL lamps to confirm the information at the Wikipedia page...." | Read more » | over 7 years ago | |||
| warren | "Oh thanks! I believe, but Chris may correct me, that it'd be sufficient to measure a cold long tube fluorescent lamp and compare it to pretty much ..." | Read more » | over 7 years ago | |||
| zega | "@warren , @cfastie I see i'm kinda late to the party, i can offer source verification (you can ship CFL source to me) with 3rd party device, Ocean..." | Read more » | over 7 years ago | |||
| Matej | "Cool! Thanks Jeff! This is helpful. " | Read more » | almost 8 years ago | |||
| warren | "What I did to compare is to calibrate on a CFL, then scan a tube fluorescent, so that the methodology for calibration is the same: https://spectra..." | Read more » | almost 8 years ago | |||
| Matej | "Interesting. I actually did kind of an "educated guess" calibration but I couldn't find more but one blue peak. I know that in the "usual" CFL ther..." | Read more » | almost 8 years ago | |||
| warren | "Actually this looks calibrated, no? " | Read more » | almost 8 years ago |