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garden
garden


Author Comment Last activity Moderation
Georgina "Thanks for this guidance! " | Read more » almost 5 years ago
stevie "Hi there, great question. Bringing an answer over from @thegreencommunitygarden that was sent out on the main list: "Try the local cooperative exte..." | Read more » almost 5 years ago
warren "Great question -- I used tags to add the prompt for posting replications; if you're willing, would you mind posting your results using the button a..." | Read more » about 6 years ago
cfastie "You are correct that this is not really an extraction. It's just plant material chopped up finely in a blender with some liquid. I also did this wi..." | Read more » about 6 years ago
iamkat "Hi, I tried to re-create the lycopene extraction with methanol and ethanol (lab grade) but didn't get anywhere. It's my understanding that they are..." | Read more » about 6 years ago
cfastie "Guillaume, Moving the entrance slit farther from the grating might help. I found that the grating does not have to be angled so sharply when the gr..." | Read more » over 7 years ago
Guillaume123 "To Chris It will be relatively easy for me to take out the slit adjusting mechanism and move it further from the diffraction grating adjustment by..." | Read more » over 7 years ago
cfastie "Guillaume, That was a great idea to allow adjustments to the angle of the slit and grating. You should be able to find positions that produce very..." | Read more » over 7 years ago
Guillaume123 "Thanks idahoboy1941! I have looked at the Google entries. Many of them require payment, but one by WG Fastie is immediately interesting. I can eas..." | Read more » over 7 years ago
idahoboy1941 "Markdown I have observed similar effects in the past and found the difficulty to be the orientation of the "Grating Lies" in respect to the inlet s..." | Read more » over 7 years ago
mathew "i like your re-adjustable grating angle setup. real nice. " | Read more » over 7 years ago
warren "Hi, Guillaume - my understanding is that curved lines can result both from curved diffraction gratings (which you've avoided) and from the lens in ..." | Read more » over 7 years ago
Guillaume123 "Markdown " | Read more » over 7 years ago
liz "the filter is on the inside. It's actually the one that you hand modified, and gave to me in midtown one day " | Read more » almost 8 years ago
warren "Hi, Liz - what kind of camera are you using? Is the filter on the outside? " | Read more » almost 8 years ago
liz "Thank you Chris!!! I am reviewing this post now: http://publiclab.org/notes/warren/08-15-2013/white-balancing-a-canon-camera-for-infragram-photogra..." | Read more » almost 8 years ago
cfastie "There are a few reasons that the NDVI results from that Infragram photo do a poor job of differentiating plants from nonplants. The primary reason ..." | Read more » almost 8 years ago
gclout01 "Yes, we used rubber bands around the camera to hole it to the pole....Let me know how it works out...Greg " | Read more » about 8 years ago
stevie "oh interesting. I like it. I was thinking of using a Lot of rubber bands. :) " | Read more » about 8 years ago
cfastie "Stevie, I included some photos of a pole camera in this thread: https://groups.google.com/forum/#!topic/plots-infrared/OoIAzTDshFE Let me know if ..." | Read more » about 8 years ago
stevie "Loved this write up. I made one of these at a recent event. We were wondering though, do you have any suggestions for attaching the camera? Or pict..." | Read more » about 8 years ago
btbonval "Pinoccio is an open source / open hardware solution that makes data collection a breeze. It runs on Arduino and makes everyone's life considerably ..." | Read more » about 8 years ago
liz "This picture of Carla was very popular on twitter! It was retweeted by Newark's Office of Sustainability, another group encouraging New Jersey-base..." | Read more » about 8 years ago
mathew "The carbon fiber poles are very light weight (1kg or so). One person can stand one up. The momentum is a bit disconcerting, but its quite manageab..." | Read more » about 8 years ago