| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| warren | "Sorry! Spectral Workbench. " | Read more » | over 10 years ago | |||
| ygzstc | "Sorry but what is SW? " | Read more » | over 10 years ago | |||
| warren | "Wow, very cool! Can you link to your spectra on SW? " | Read more » | over 10 years ago | |||
| Henry0815 | "Hi Jeffrey, "Was there a reason you mostly used the green? A blue laser will excite a broader range of colors, since light can only excite colors a..." | Read more » | over 10 years ago | |||
| warren | "@stevie did you see this note now that Henry's added images? Pretty neat, and perhaps one of the only posts I've seen of the oil testing kit in the..." | Read more » | over 10 years ago | |||
| warren | "Also can you share any of the spectra you did get? Links? Thanks! " | Read more » | over 10 years ago | |||
| warren | "Wow the photos are amazing. Was there a reason you mostly used the green? A blue laser will excite a broader range of colors, since light can only ..." | Read more » | over 10 years ago | |||
| warren | "Hi, Henry - what is your fluophore? Did you purchase the alpha oil testing kit with the blue/uv laser pen? I've been able to line up the desktop ..." | Read more » | over 10 years ago | |||
| ferguspitt | "Hi Josh, I'm doing some research on public labs' use of spectrometers, and I was wondering if you could confirm a few details for me? ferguspitt@co..." | Read more » | over 10 years ago | |||
| warren | "We are now putting together an initial spectrometry oil testing kit... it'll need a lot of refinement but we really want to get moving on this. Che..." | Read more » | almost 11 years ago | |||
| warren | "Hmm, do you have enough UV light? No, the sample container shouldn't matter, as long as you are seeing a glow coming from the sample. Can you post ..." | Read more » | almost 11 years ago | |||
| salem | "hey guys..i am trying to do the same experiment but i am not getting any result. it seems that the uv light can't enter the spectrometer in order t..." | Read more » | almost 11 years ago | |||
| pwe11 | "Hey guys- I'm new here and apologize if this has already been stated. If you want to see the maximum fluorescence, you must first look at its absor..." | Read more » | almost 11 years ago | |||
| eustatic | "I'm also trying to reproduce. it's on an much longer time frame, though, than this experiment. " | Read more » | about 11 years ago | |||
| warren | "Note to self: found possibly-suitable boxes: http://www.uline.com/Product/Detail/S-12694BL/Retail-Boxes/9-x-6-1-2-x-2-3-4-Black-Colored-Mailers?mod..." | Read more » | about 11 years ago | |||
| warren | "Sorry -- he is going to try to reproduce this experiment. :-P " | Read more » | about 11 years ago | |||
| warren | "Scott has ordered some laser pointers and is going to try to reproduce. " | Read more » | about 11 years ago | |||
| eustatic | "woah! " | Read more » | about 11 years ago | |||
| eustatic | "cool " | Read more » | about 11 years ago | |||
| jeffh | "There are tradeoffs, but it's certainly worth trying violet/UV LEDs. The wavelengths are roughly equivalent, but the LED emits across a broader ran..." | Read more » | about 11 years ago | |||
| warren | "@jeffh - do you think it'd be possible to do such analysis using a blue or ultraviolet LED, instead of a laser? I wonder if it would be safer (for ..." | Read more » | about 11 years ago | |||
| jeffh | "Very nice experiment, and a great set-up for measurements. I bought a 405-nm laser a couple of months ago, and that's a much better wavelength for ..." | Read more » | about 11 years ago | |||
| warren | "@stoft - the reference was just the UV laser. I didn't have an empty vial at the time but you're right that we should do that test. The sample is a..." | Read more » | about 11 years ago | |||
| greggbone | "I would love to be able to characterize oils, olive oil in particular. Two areas of characterization: Adulteration and Quality. A very high perce..." | Read more » | about 11 years ago |