Comments

Author Comment Last activity Moderation
cfastie "That sounds like a lot of lift in a good wind. Does that come mostly from the kite part or from the aerofoil shape of the balloon part? Wait, does..." | Read more » about 3 years ago
cfastie "Mathew, The Airpup can lift a payload of 500 grams when there is no wind. Will it lift more when there is wind? How hard was it pulling in the 20 ..." | Read more » about 3 years ago
cfastie "There is another version of this sensor with the same specifications and the same price but it is about half the size. Does anyone know any reason ..." | Read more » about 3 years ago
cfastie "You are right that there has not been much follow-through at Public Lab on developing and testing DIY conductivity or total dissolved solids (TDS) ..." | Read more » about 3 years ago
cfastie "This is great project. The trickiest part will be making the device "unnoticeable to the public." That could be a real obstacle to finding a simpl..." | Read more » over 3 years ago
cfastie "Magnification in this context is the relationship between the size of an object and the size of an image of that object. Assuming the hatch marks..." | Read more » over 3 years ago
cfastie "Is \ *markdown * parsed?   Number 1 Number 4 Number 3   " | Read more » over 3 years ago
cfastie "The image was missing, the video embed was broken, and the text which followed the video did not display. " | Read more » over 3 years ago
cfastie "Let's see how this works with images or an embedded video. Is markdown parsed? " | Read more » over 3 years ago
cfastie "Okay, this is an email reply to the notification email I got. Let’s see where this ends up.   Chris   From: notifications@publiclab.org \<no..." | Read more » over 3 years ago
cfastie "It might be that the first step is to define the term magnification. What is it exactly you want to know? Chris " | Read more » over 3 years ago
cfastie "Are you referring to this research note? https://publiclab.org/notes/cfastie/05-11-2017/dual-ndvi-ultra-probe-unit Are you referring to this figur..." | Read more » over 3 years ago
cfastie "I am not sure what "full spectrum" means when used to describe LEDs. It probably means that all the visible wavelengths are present in the light at..." | Read more » over 3 years ago
cfastie "That's too bad about the proprietary Mapir calibration. Is there information about the spectral reflectivity of the calibration targets? If not, th..." | Read more » over 3 years ago
cfastie "the camera collects red, green and nir channels So this camera has a red filter and captures NIR in the blue channel. The light in the chamber is..." | Read more » over 3 years ago
cfastie "the Waterproof Mini Camera (infrared-ready) Be aware that this camera must be opened and modified before it can capture near infrared light. The p..." | Read more » over 3 years ago
cfastie "Stevie, The image code is still embedded in the version of my comment you promoted to an Answer. So I just copied the markdown into another comment..." | Read more » over 3 years ago
cfastie "The intense red tide blooms (Karenia brevis) in the Gulf of Mexico are easy to detect with normal color photography because they are red (top image..." | Read more » over 3 years ago
cfastie "Most cameras will work for indoor, close-up photography. Most cameras will focus on subjects a few feet away. A typical inexpensive consumer consum..." | Read more » over 3 years ago
cfastie "Most cameras will work for indoor, close-up photography. Most cameras will focus on subjects a few feet away. A typical inexpensive consumer consum..." | Read more » over 3 years ago
cfastie "The editing system is not working today, so I put an answer in a comment. " | Read more » over 3 years ago
cfastie "Don't forget that when doing absorption spectroscopy: The two spectra (photos of the reference and the sample) must be taken with the same camera..." | Read more » over 3 years ago
cfastie "MaggPi, This a really promising approach. Do you have any information on the proportion of red light to NIR light produced by your LED combinatio..." | Read more » over 3 years ago
cfastie "MaggPi you are correct that presenting color-mapped data-based images without presenting the colormap key makes the images mostly meaningless to vi..." | Read more » over 3 years ago