laser
laser


Author Comment Last activity Moderation
warren "Hi, @chongyukwai - would you be willing to try it out and document the results if we sent you an Oil Testing Kit? " | Read more » about 9 years ago
mathew "hmm.. Looks like the PCR tubes are close to perfect-- but they're round, which will be troublesome for aligning the laser light path, although we c..." | Read more » about 9 years ago
warren "Huh, interesting! Are they available in materials which don't fluoresce? Do you have a UV laser to test that out with and would you be able to post..." | Read more » about 9 years ago
chongyukwai "PCR tube fits your requirement of the container I think! " | Read more » about 9 years ago
btbonval "These instructions are really great, except I feel like there's a gap between the laser attenuator and the completed assembly. "Place in front of ..." | Read more » about 9 years ago
amysoyka "http://home.hiroshima-u.ac.jp/er/EV_EI_A(2)_07.html ...If you scroll down in the page linked above, it tells you the different refractive indexes ..." | Read more » over 9 years ago
warren "Ooh, great idea mathew! " | Read more » over 9 years ago
mathew "I'm wondering if two off-the-shelf Shinyei sensors could be coupled together with an electromagnet to make this work: http://publiclab.org/notes/do..." | Read more » over 9 years ago
el_tonio "My initial thought was an electromagnet might be best. Reading the journal though, they use two small neodymium magnets. The major issue with rough..." | Read more » over 9 years ago
amysoyka "@el_tonio Your image has me thinking it might be worth using a piece of metal piping & turning it into an electromagnet. Also, found this art..." | Read more » over 9 years ago
el_tonio "Further questions that need exploring: Following some literature * What does the data look like * What is a positive result? * What is a negative ..." | Read more » over 9 years ago
Henry0815 "some more info on airborne laser induced oil spill detection and fluorescence measurements in Germany are here: http://www.havariekommando.de/en/c..." | Read more » over 9 years ago
mathew "ok, trying to see if I can get good results from the Sanm camera, since all these spectra are from the discontinued Syba camera.... nope. the Sanm ..." | Read more » almost 10 years ago
mathew "nice! " | Read more » almost 10 years ago
warren "OK, added "equalize area" and scripting to the sets page: https://spectralworkbench.org/sets/show/1461 It still doesn't save, but makes that part ..." | Read more » almost 10 years ago
warren "Diesel, gear oil, and N. Dakota crude: " | Read more » almost 10 years ago
warren "Just a quick followup on area normalization: We really need smoothing that we can save too. " | Read more » almost 10 years ago
mathew "What happens if you unscrew the lens on the laser and put it in front of the LED? can you concentrate the light to make a brighter point? " | Read more » almost 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 » almost 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 » almost 10 years ago
warren "Also can you share any of the spectra you did get? Links? Thanks! " | Read more » almost 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 » almost 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 » about 10 years ago
warren "Hey jay - this is a great post - it seems like your camera is just extremely sensitive and is being badly blown out (or clipped) by pointing your s..." | Read more » over 10 years ago