| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| Matej | "Cool! Thanks Jeff! This is helpful. " | Read more » | over 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 » | over 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 » | over 8 years ago | |||
| warren | "Actually this looks calibrated, no? " | Read more » | over 8 years ago | |||
| Matej | "@warren: in response to: "Can you try re-calibrating this one, as I think it was calibrated during a brief bug (it shows being calibrated on 1/26/1..." | Read more » | over 8 years ago | |||
| Matej | "@ethanbass for calibration I am not smoothing the spectra. I just thought it could be helpful when comparing them and adding them to a set. " | Read more » | almost 9 years ago | |||
| Matej | "Hi Jeff, Thanks for the info about the bug! I Will recalibrate right away. I discussed with Gretchen and I think I will keep using this bulb since ..." | Read more » | almost 9 years ago | |||
| dhaffnersr | "Hey Jeff, your right I just thought about it, it will calibrate, it's just you can't get a good fit. " | Read more » | almost 9 years ago | |||
| warren | "that continuous band on the blue spectrum gives poor calibration Dave, I don't think it's quite accurate to say that they give poor calibration. T..." | Read more » | almost 9 years ago | |||
| warren | "Can you try re-calibrating this one, as I think it was calibrated during a brief bug (it shows being calibrated on 1/26/16) which was since fixed. ..." | Read more » | almost 9 years ago | |||
| warren | "Hi, Matej - it also looks like some of your spectra are not calibrated, or perhaps not properly? I'm seeing some not aligned. But all of them seem..." | Read more » | almost 9 years ago | |||
| dhaffnersr | "Hello Matej! Those "humps" that you are getting from the daylight bulbs are the very reason I don't use them, that continuous band on the blue spec..." | Read more » | almost 9 years ago | |||
| ethanbass | " " | Read more » | almost 9 years ago | |||
| ethanbass | "Hey Matej, there's something going wrong with the way your second and third sets are showing up there! They've got all of those squiggles showing u..." | Read more » | almost 9 years ago | |||
| homechemist | "hcl is a strong acid but it won't work with cooper unless you add hydrogen peroxide, so i would recommend nitric acid for dissolve samples " | Read more » | over 10 years ago | |||
| straylight | "good work amy, I like the thinking. I've had the optic fibre tactic on the backburner now for a while, I have the fibre, just need to work on a le..." | Read more » | over 10 years ago | |||
| warren | "If you look at some of Chris Fastie's work on the Infragram technique, he's posted a lot about theater gels as a way to filter certain wavelengths ..." | Read more » | over 10 years ago | |||
| mathew | "hmmm... neat idea. Some paints have aniline dyes, but many higher quality paints have just pure mineral pigments. the spectrum of the reflectivit..." | Read more » | over 10 years ago | |||
| stoft | "So, the translucent paint would provide a filter and you'd select the paint color to select the spectral wavelength to detect? ...which is similar ..." | Read more » | over 10 years ago | |||
| stevie | "Ohh I understand. Ok I might get this wrong (I'm still new to the science) but we were using the mineral oil as a sort of base sample. We know how ..." | Read more » | over 10 years ago | |||
| amysoyka | "The purpose of the paint is to act as a filter so that only the exact colour wavelength that matched the colour will be absorbed and trigger the li..." | Read more » | over 10 years ago | |||
| stevie | "Interesting.. with the oil testing kit we've been using mineral oil. Might that serve a similar function? " | Read more » | over 10 years ago | |||
| warren | "I agree, dan - i assume we'd have to have a flame too... just thinking of a compact way to mist a sample, in a way that can be done inside a small ..." | Read more » | over 10 years ago | |||
| danbeavers | "I think the e-cigarette is just vaporizing the liquid. I don't believe it burns anything (unless it runs dry or gets too hot) " | Read more » | over 10 years ago |