crude
crude


Author Comment Last activity Moderation
mathew "@stoft Dave, we're getting similar brightnesses between our readings of different oils by varying the concentration and/or light path, which seem t..." | Read more » over 9 years ago
warren "I don't know the word for this kind of thing, but maybe @btbonval does :-) The line divides the graph into two equal areas: " | Read more » over 9 years ago
stevie "Good work here. I like the blowout warning idea. Experimenting with the oil density is def. another good step, but I agree that the distinct variat..." | Read more » over 9 years ago
stoft "Looks promising. Maybe these are obvious but... - Pick 3-5 oils, or oil mixtures, as a reference test set -- low to high density -- then use them f..." | Read more » over 9 years ago
warren "Unfortunately some of these lines are covered by others. I guess I should make the key show a wavelength too? " | Read more » over 9 years ago
warren "OK, I added a couple more features -- one which bisects a graph with a vertical line where the area of the graph is equally divided -- what's that ..." | 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 » over 9 years ago
mathew "nice! " | Read more » over 9 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 » over 9 years ago
warren "Diesel, gear oil, and N. Dakota crude: " | Read more » over 9 years ago
warren "Just a quick followup on area normalization: We really need smoothing that we can save too. " | Read more » over 9 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
warren "Another draft of the paper research note: I also made a Post-It notepad of these on Zazzle.com: http://www.zazzle.com/public_lab_paper_research..." | Read more » almost 10 years ago
stevie "Draft event guide posted: http://publiclab.org/notes/stevie/08-13-2014/working-oil-testing-event-guide " | Read more » almost 10 years ago
stevie "I agree! In this event, we were testing out a number of different bottle options, trying to source the best ones. (you can see some of the ones we..." | Read more » almost 10 years ago
bsugar "hmmm...well, this presents a dilemma in that Public Lab will be the only ones with the purchasing power to buy them inexpensively, but people will ..." | Read more » almost 10 years ago
warren "The orig bottles were basically square, but not very precise -- sort of that wavy crude surface from molded glass. But I have a sense that there's ..." | Read more » almost 10 years ago
bsugar "regarding the new bottles, in my search to find alternatives, it seems like even the squarest of bottles on the outside have some curvature on the ..." | Read more » almost 10 years ago
warren "Ooh, 36 articles which cite this one: http://scholar.google.com/scholar?cites=12262006161023041861&as_sdt=40000005&sciodt=0,22&hl=en t..." | Read more » almost 10 years ago
bsugar "@stevie, it would be very helpful. I think all and all this makes an excellent framework for any workshop, in particular the part where you have t..." | Read more » almost 10 years ago
warren "I like the idea that if there are 4 tables, four different organizers can sort of "staff" the tables, focusing on the parts they know best. " | Read more » almost 10 years ago
stevie "hey all, Great thread. Scott thanks for writing up the materials list. Also, I'll add we had sticky notes and markers on each table with a post-it ..." | Read more » almost 10 years ago
warren "Unexpected yes -- it was for some reason much harder to get light into the webcam! But very easy on a smartphone. We're working a bit on this probl..." | Read more » almost 10 years ago
eustatic "1) yes 2) there's not enough light, so perhaps angling the laser a certain way, or shining it through at the right level would help, so that the ca..." | Read more » almost 10 years ago