Comments

Author Comment Last activity Moderation
kgradow1 "@mimiss: I think the answer to the first question is probably yes! The bucket uses a Swagelok adapter, similar to the Summa canisters, and it l..." | Read more » 6 days ago
kgradow1 "Hi Stevie! I'd like to link this on the bucket project page, would you be willing to add the tag bucket-monitor? " | Read more » 6 days ago
kgradow1 "I don't know of anyone at Public Lab working on this at the moment, but as a former HAM I'd be super interested in following this project. What ki..." | Read more » 7 days ago
kgradow1 "@jywarren thank you jeff! " | Read more » 15 days ago
kgradow1 "This is wonderful, thank you for posting. Do you have any sense of what caused the PM 2.5 spikes in Velachery Res. Area and Alandur Bus Depot 2.5,..." | Read more » 15 days ago
kgradow1 "My question is really about current workflows for gas chromatography / mass spectrometry for environmental monitoring. Part of what we are trying ..." | Read more » 18 days ago
kgradow1 "Is GC-MS still typically done in a lab or are there versions that can be done in the field? " | Read more » 18 days ago
kgradow1 "@Ag8n gc/ms is the standard way that bucket samples have been analyzed in the past, but it's expensive compared to the cost of the bucket. I'm fam..." | Read more » 18 days ago
kgradow1 "@jjcreedon, thank you! Are you still using buckets today? I'd love to hear more about your experiences. I've been reading up on Tonawanda Coke ..." | Read more » 18 days ago
kgradow1 "Could you use a laser pointer and still go through the same workflow with @cfastie's reference image? I'm not sure if the peaks would line up, th..." | Read more » 21 days ago
kgradow1 "This looks awesome! Also well illuminated. Did you use a cover sheet for the sample or is this just freeform? It looks like there are tiny bubb..." | Read more » 22 days ago
kgradow1 "I've had success using giant graph paper to do simple models of movement over time. For instance, modeling wildfire mitigation: run as a timed ac..." | Read more » 28 days ago
kgradow1 "Looking at the difference between the higher leaves and the bottom left branches: Do you always see water stress in trees at the extremities first..." | Read more » 3 months ago
kgradow1 "This is a great picture! " | Read more » 3 months ago
kgradow1 "Airborne crystalline silica is a known occupational health hazard and is hazardous in high concentrations. See links below: https://www.silica-sa..." | Read more » 3 months ago
kgradow1 "Paquicamus, there are a number of adapters that are available through Thingiverse to connect the Raspberry Pi camera to a stereo microscope, for in..." | Read more » about 2 years ago
kgradow1 "That's really helpful, thank you! I feel like I need to reread and synthesize this a bit, since I still have a very rudimentary idea of how micro..." | Read more » about 2 years ago
kgradow1 "I would love to try to replicate this in Somerville. Flooding is a big problem here. " | Read more » about 2 years ago
kgradow1 "For reference, here is a diagram of lung tissue that better explains what you're looking at: http://ib.bioninja.com.au/options/option-d-human-phys..." | Read more » about 2 years ago
kgradow1 "We've been working with these to take initial photos: https://www.amazon.com/AmScope-PS25W-Microscope-Biological-Education/dp/B009YLNJ4A/ref=sr_1_..." | Read more » about 2 years ago
kgradow1 "The cost of all of them actually vary a lot. We took a 40x apart at the barnraising and realized it only has two lenses inside of it, which seemed..." | Read more » over 2 years ago
kgradow1 "I'd love to work through a build at 4x or 10x, which should a much simpler in terms of onboarding and just learning how to use the scope. At those..." | Read more » over 2 years ago
kgradow1 "Do you mean which magnification? Either 40x or 100x are good. I think the 40x is slightly easier to start with, since it's easier to find your m..." | Read more » over 2 years ago
kgradow1 "40x for $22: http://www.amscope.com/40x-achromatic-microscope-objective.html 100x for $31: http://www.amscope.com/100x-achromatic-microscope-oil-..." | Read more » over 2 years ago