Comments

Author Comment Last activity Moderation
alejobonifacio "Hi! good question! The frequency of PWM of arduino is about 500hz. Is that enough for conductivity measurement? " | Read more » 28 days ago
Ag8n "If using an instrument like a hunter colorimeter, be careful. There is the Hunter L,a,b scale. Then there is the cie L,a,b* scale. Most instrumen..." | Read more » about 1 month ago
Ag8n "Little change here. Most water or liquid measurements are on transmitted or absorbed light. " | Read more » about 1 month ago
Ag8n "Its very easy to get these two instruments confused. If you are measuring color in industry(as in paint color, siding color, etc), its often with ..." | Read more » about 1 month ago
michelleiL "@JuliaGuerrein @caitlion " | Read more » about 1 month ago
Ag8n "The tungsten lamp remarks only apply to the 660 nm red lines. " | Read more » about 1 month ago
Ag8n "Best bet- use an old fashioned tungsten lamp. Not a LED claiming to be a tungsten lamp. An LED has a narrow bandwidth. An old fashioned tungsten..." | Read more » about 1 month ago
Ag8n "Looking into the 660 nm lines. It's not that LEDs don't exist for 425 nm region. They do. But the ones in the catalogs seemed expensive. Going ..." | Read more » about 1 month ago
stevie "Yikes that looks terrible! I'm sure you're reporting this. let us know how you do it and what happens! " | Read more » about 1 month ago
Ag8n "There are 3 in 1 flashlights ( blue, white, and red) that would be good for this application- as long as the color was more like purple instead of ..." | Read more » about 2 months ago
Ag8n "If you are using the public lab spectrometer, a light source for around 400 nm is needed. It looks like there are some blue or violet led bulbs/ f..." | Read more » about 2 months ago
Ag8n "A test of this method might be to use lawn clippings and run it through the procedure. The idea is to extract chlorophyll, which should be presen..." | Read more » about 2 months ago
Ag8n "Another, more current option , is to use a coffee grinder. With the temperature issues this material shows, probably using the frozen state would ..." | Read more » about 2 months ago
Ag8n "As for the mortar and pestle, there are many options. Some mortar and pestles are very expensive, but they don't have to be. They should be easy t..." | Read more » about 2 months ago
Ag8n "Was checking one of the online vendors. Found new centrifuges for $70. Industrial quality centrifuge costs were much higher, but who knows. If y..." | Read more » about 2 months ago
Ag8n "Ok. Trying to stay as close to duplicate the original paper as closely as possible. R.la cera isn't in this area. But other closely related liche..." | Read more » about 2 months ago
chall0105 "Caleb Hall- 5/10/2022- Water Security Link 1: Overall, the water quality in Louisiana is good due to the clean water act. Under this act, the disc..." | Read more » about 2 months ago
Ag8n "One word of warning. Solvents ( like acetone) and plastic cuvettes do not usually go together. The worst case is the plastic melts, but the plast..." | Read more » about 2 months ago
simransia07 "Thank you @warren for replying back. I understand the time constraints you all have due to the high number of applicants and I know that you have t..." | Read more » about 2 months ago
Ag8n "Still have to do more work. But the acetone extract seems like something that might be doable in a home lab type situation. The acetone extract i..." | Read more » about 2 months ago
ranavivek_me19 "Hey! @jywarren , thanks a lot for ur feedback. For the hashtag idea, it will be useful to aggregate similar kinds of authors and even during the s..." | Read more » about 2 months ago
liz "This workshop is still the gold standard! Thank you " | Read more » about 2 months ago
sashae "Yes that's the idea! In DIY Satellite Ground Station workshops we often found it difficult to navigate different operating systems on the fly. APT ..." | Read more » about 2 months ago
fongvania "There's some work needed to modify this research protocol so it can be done in regions like Ohio that might not have the exact species listed in th..." | Read more » about 2 months ago
fongvania "I don't know of a community science project using the pigment extraction method since there are some specialized steps and equipment, but we're cur..." | Read more » about 2 months ago
Ag8n "This looks great!! Thank you! Is this also a way around all the different platforms ( windows, linux, etc.)? " | Read more » about 2 months ago
sashae "Hi @Liz! Thanks for asking. Yes a link is coming soon. This research note will also be expanded significantly in the coming weeks. " | Read more » about 2 months ago
sashae "Hello @Ag8n ! A link to the decoder will be added before the end of the week. This research note will be expanded to include information on the pro..." | Read more » about 2 months ago
tats_daniel "Hi Chris, I am experiencing the same problem with my NDVI values. Can you help on how you manipulated the red channel to resolve the issue. Thanks " | Read more » about 2 months ago
perhisohwode "Hi @warren, Sequel to your reviews and feedbacks, I have updated my proposal to reflect the checks to be carried out to sync MK with the latest dat..." | Read more » about 2 months ago