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Author Comment Last activity Moderation
straylight "A rather nice exercise, well done. Quite surprising results I think, I would have predicted the extra sugar to have had minimal effect on the trans..." | Read more » over 8 years ago
btbonval "I just saw an article about detecting if a drink has been drugged: http://www.gadgetify.com/pd-id-tells-drink-drugged/ How much sugar is in wine? ..." | Read more » over 8 years ago
warren "Oh I was just hoping for links to the raw data you collected. " | Read more » over 8 years ago
ygzstc "Info about the spectra is in the appendix already but I guess you mean something different by linking? Am I missing something? " | Read more » over 8 years ago
warren "Sorry! Spectral Workbench. " | Read more » over 8 years ago
ygzstc "Sorry but what is SW? " | Read more » over 8 years ago
warren "Wow, very cool! Can you link to your spectra on SW? " | Read more » over 8 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 8 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 8 years ago
warren "Also can you share any of the spectra you did get? Links? Thanks! " | Read more » over 8 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 8 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 8 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 » almost 9 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 » about 9 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 » about 9 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 » about 9 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 » about 9 years ago
eustatic "I'm also trying to reproduce. it's on an much longer time frame, though, than this experiment. " | Read more » about 9 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 9 years ago
warren "Sorry -- he is going to try to reproduce this experiment. :-P " | Read more » about 9 years ago
warren "Scott has ordered some laser pointers and is going to try to reproduce. " | Read more » about 9 years ago
eustatic "woah! " | Read more » about 9 years ago
eustatic "cool " | Read more » about 9 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 9 years ago