| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| warren | "I've submitted a bug report with steps to fix: https://github.com/publiclab/plots2/issues/885 -- sorry! " | Read more » | over 7 years ago | |||
| warren | "I'm actually having trouble editing this page -- must be a bug due to it being "converted" to a question instead of being one from the start. " | Read more » | over 7 years ago | |||
| warren | "Actually i haven't tried marking a question as an activity; i guess it works? Maybe not a good practice? I dunno -- new territory for us! As to you..." | Read more » | over 7 years ago | |||
| pdhixenbaugh | "Also: I'm not sure if you're testing (1) Hot Tap Water vs Cold Tap Water, or (2) Hot Tap Water vs. Hot Tap Water which has cooled down. Put another..." | Read more » | over 7 years ago | |||
| pdhixenbaugh | "So both questions and research notes can be marked as an activity? And at some point, folks replicating the activity can post their answers? I like..." | Read more » | over 7 years ago | |||
| warren | "I renamed this and converted it to a "Question" in the new Q&A system " | Read more » | over 7 years ago | |||
| QMTphysicist | "Hi Suiris, it good to see how filtering the tap water works. How do you take transmittance measurements using spectralworkbench? I am looking into ..." | Read more » | over 8 years ago | |||
| GreenChemist | "Hi Warren, Thanks. I am a chemical engineer who always worked in Medical and Safety industries. Currently I am looking for a new position anywhere ..." | Read more » | almost 9 years ago | |||
| warren | "It's a good point -- esp. always to be sure that the scope of the test is clear. The idea here was more exploratory, but in general this kind of co..." | Read more » | almost 9 years ago | |||
| GreenChemist | "Hi Warren, Indeed the test would not find the bacteria, you need a polymerase chain reaction (a PCR test), or grow a culture. I am not sure if this..." | Read more » | almost 9 years ago | |||
| warren | "Hi, Don - sorry, you never wrote back so I hadn't changed the title until now - it now says "Coqui" only - thanks. The conclusion you draw: it s..." | Read more » | almost 9 years ago | |||
| GreenChemist | "Hi Warren, I am new at this, so maybe I missing the ball, but isn't one of the reason why not to drink from the hot tap the possible presence of L..." | Read more » | almost 9 years ago | |||
| warren | "Great, thanks Don. I can change the title/body to reflect whatever name you think is more appropriate -- "Coqui-based water conductivity sensor"? ..." | Read more » | over 9 years ago | |||
| donblair | "Ah, this is all so great! This brings up a bunch of interesting issue for me that I'd love to get feedback on. Naming conventions. Maybe it'd be..." | Read more » | over 9 years ago | |||
| kanarinka | "Hey @warren @donblair and Katie - Nice work - this is simple and exciting. we did a home brewed test of Coquí here last weekend with hot/cold water..." | Read more » | over 9 years ago | |||
| Suiris | "The test was just to measure the difference in clarity between tap water and filtered water, using a single wavelength instead of a white warm LED ..." | Read more » | over 10 years ago | |||
| Ernie | "I afraid that using a laser will not tell you much about the chemical composition of any contamints in your water. The laser spectrum is much too ..." | Read more » | over 10 years ago | |||
| Suiris | "Hi drabanus, The time span between each spectra was less than 30 seconds and the LED light had been on for quiet some time before I began the tests..." | Read more » | over 10 years ago | |||
| Suiris | "Hi Ernie, Thanks for the great advice and information. To be honest I am completely new to te spectrometer hobby and most of what you wrote baffles..." | Read more » | over 10 years ago | |||
| drabanus | "One other test to characterize the stability of your spectrometer is to just repeat identical measurements after a certain time span, say minutes, ..." | Read more » | over 10 years ago | |||
| Ernie | "Some typo's in my previous post: To normalize your sample spectrum, you will want (delete "you") to divide... Use an (delete "sample") empty bottle..." | Read more » | over 10 years ago | |||
| Ernie | "I hope your system is mechanically stable so as to get reproducible spectra. With regard to the illumination spectrum (the LED), it is not truly w..." | Read more » | over 10 years ago | |||
| Suiris | "I am using a Canon IXUS 120 IS for taking pictures, then I cut out the spectrum from the black background, paste it as a new image and upload it t..." | Read more » | over 10 years ago | |||
| danbeavers | "OK then I would like to know about your work flow. Are you using a camera attached to your computer or are you taking a picture and then processing..." | Read more » | over 10 years ago |