| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| warren | "Testing @icarito and @cfastie - pls confirm? Thanks. " | Read more » | over 7 years ago | |||
| warren | "@icarito - confirm? " | Read more » | over 7 years ago | |||
| warren | "@ygzstc - pointing you at this note since you've ordered some very bright UV LEDs. Oops, missed your comment mathew - we'll have to try that, thou..." | Read more » | almost 8 years ago | |||
| warren | "I tried to find gel caps but CVS didn't have them; I was going to order online but saw your note about the fluorescence... should I still order them? " | Read more » | over 8 years ago | |||
| warren | "Do you (or jack) mean getting the laser to be in the same place each time with relation to the slit? If the laser is fixed in place by the cardboar..." | Read more » | over 8 years ago | |||
| warren | "Actually, kind of amazing -- for the Creative webcam ones, not enough laser was actually reflected into the spectrometer to get the 405nm peak... c..." | Read more » | over 8 years ago | |||
| warren | "Oh, edit: the Creative had a wider than usual slit -- maybe 1.25mm or so. So maybe the clipping in the blue channel wouldn't be as bad with a littl..." | Read more » | over 8 years ago | |||
| warren | "Hi, Livio - I was so fascinated with your post -- where exactly did you collect a sample from, and was it soil? Water? " | Read more » | almost 9 years ago | |||
| warren | "Wow chris the barcode scanner filter idea is great!!! " | Read more » | almost 9 years ago | |||
| warren | "I think a lot of the challenge of using an Infragram camera well is the need for comparison. Comparing an area treated in one way with a "control" ..." | Read more » | almost 9 years ago | |||
| warren | "I think i found the data on Yagiz's Spectral Workbench profile, and I made a set: https://spectralworkbench.org/sets/show/1369 Embeds don't seem t..." | Read more » | almost 9 years ago | |||
| warren | "Oh I was just hoping for links to the raw data you collected. " | Read more » | almost 9 years ago | |||
| warren | "Sorry! Spectral Workbench. " | Read more » | almost 9 years ago | |||
| warren | "Wow, very cool! Can you link to your spectra on SW? " | Read more » | almost 9 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 » | almost 9 years ago | |||
| warren | "Also can you share any of the spectra you did get? Links? Thanks! " | Read more » | almost 9 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 » | almost 9 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 » | 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 » | over 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 » | over 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 » | over 9 years ago | |||
| warren | "Sorry -- he is going to try to reproduce this experiment. :-P " | Read more » | over 9 years ago | |||
| warren | "Scott has ordered some laser pointers and is going to try to reproduce. " | Read more » | over 9 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 » | over 9 years ago |