barnstar:empiricism
barnstar:empiricism


Author Comment Last activity Moderation
liz "Thank you so much for writing out this question -- as i am not from the commercial world, it's helpful for me to understand where different people ..." | Read more » almost 4 years ago
Ag8n "You will need to tweak the method a little more, with volumes amounts of material added, etc. This should be viable for ammonium nitrate based ma..." | Read more » almost 4 years ago
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Ag8n "Make sure you look for the liquid sample test ammonia kit, if interested. This is the one with a test tube and two liquids to add. The wrong kind..." | Read more » almost 4 years ago
Ag8n "Re:the ammonia problem- Amazon sells api ammonia test kits for fish tanks. The cost is under $7 for 130 tests ( be suspicious of this number, thou..." | Read more » almost 4 years ago
Ag8n "The usual way to solve the ammonium nitrate problem is to form a complex (that does absorb in the visible) and analyze the complex. Off the top of..." | Read more » almost 4 years ago
david_uwi "Yes you're quite correct in an ideal world we would be using absorbance (Log of transmission) and subtracting a blank. There is also a problem with..." | Read more » almost 4 years ago
Ag8n "Ok guys,I'm used to commercial instruments. So these scans always throw me. First, if you are trying to compare concentration in the commercial w..." | Read more » almost 4 years ago
georgiatestprep "Interesting to see such solutions and question too. big clap. " | Read more » almost 4 years ago
akhila "Thank you so much for your response, it was really helpful! " | Read more » almost 4 years ago
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warren "Hi, @akhila - this is a really cool experiment you're doing! OK, i think i may have some suggestions that could help; i think you may have a doub..." | Read more » almost 4 years ago
kgradow1 "@kgradow1 awards a barnstar to akhila for their awesome contribution! " | Read more » almost 4 years ago
kgradow1 "That's interesting. I wonder why there is such a difference in the gradient for the nitrogen water. Also interesting that the contaminated milk s..." | Read more » almost 4 years ago
sophied "This is fascinating, thanks for sharing! " | Read more » almost 4 years ago
solaria "Well, probably not Starlink (>14.0GHz), but there are other satellites in this band. I generated a heatmap (using rtl_power) on 137.000MHz - 137..." | Read more » about 4 years ago
sashae "Woah! That is really interesting @solaria ! Have you encountered this kind of interference before? Do you know of other documentation of Starlink s..." | Read more » about 4 years ago
solaria "Looks like the zwettstein image is NOAA 15 2020-09-12. I have a capture of that pass, but it's noisy. Aligning the time marks, it's interesting ..." | Read more » about 4 years ago
sashae "Hi @pdhixenbaugh thanks for your question. In my basic understanding, you can 'place an order' for NOAA images and datasets through their data stew..." | Read more » about 4 years ago
sashae "Thanks @solaria ! This is really good to know. Also the image you have posted is incredible. It reminds me of this image that @zwettstein posted on..." | Read more » about 4 years ago
pdhixenbaugh "Are these same images available directly from NOAA in any way, or is receiving them Over The Air the only way to get them? I'm wondering what else..." | Read more » about 4 years ago
solaria "For Linux/Raspberry Pi, there's a great Instructable at: https://www.instructables.com/id/Raspberry-Pi-NOAA-Weather-Satellite-Receiver/. Uses 'cr..." | Read more » about 4 years ago
sashae "Dear @nearsys and @zwettstein (@midmarsh and @usere6020 ) here is the result of the open-weather community nowcast on September 6th 2020. Thanks es..." | Read more » about 4 years ago
sashae "Hi @nearsys and @zwettstein (@midmarsh and @usere6020 too), Thanks for your willingness to contribute to the open-weather global 'nowcast'. Here is..." | Read more » about 4 years ago