The final version of the DOLPi whitepaper is now available here: DOLPi_Polarimetric_Camera_D_Prutchi_2015_v5
Hack-a-Day just announced the finalists for the 2015 Prize, and DOLPi is one of them! Hack-a-Day Prize 2015 Finalists for the announcement. Here is the list of Finalists: DOLPi – RasPi Polarization Camera FarmBot – CNC Farming and Gardening Eye Controlled Wheelchair! Gas Sensor For Emergency Workers Household Electrically Enhanced Wet Scrubber Luka EV Portable
Although the circuit of shown so far as the liquid crystal panel’s AC driver works well, I’m not too happy with the intrinsic non-linearity of the FET. Because of this, today I designed and tested an alternative, a bit more complex, but I believe more elegant design. In the circuit shown above, the LCP
A new version of the DOLPi polarimetric camera whitepaper has been released at: DOLPi_Polarimetric_Camera_D_Prutchi_2015_v4
The new version of the whitepaper is available at: DOLPi_Polarimetric_Camera_D_Prutchi_2015_v3
A new, complete version of the whitepaper on DOLPi is available for download here: DOLPi_Polarimetric_Camera_D_Prutchi_2015_v2 This paper presents the development and construction of two low-cost polarimetric cameras based on the Raspberry Pi 2. “DOLPi-MECH” is a filter-wheel-type camera capable of performing full Stokes analysis, while the electro-optic based “DOLPi” camera performs full linear polarimetric analysis
The image that the liquid-crystal-panel-based DOLPi takes at “45 degrees” is not strictly that, which is why I state in the paper: “Bossa Nova’s method is straightforward if laboratory optical-grade components are used. These are very expensive and out of reach for most private enthusiasts. However, I found through experimentation that a welding mask LCP
“From: firstname.lastname@example.org Sent: Monday, August 24, 2015 9:39 AM To: david@… Subject: Your Project is a Semifinalist in the 2015 Hackaday Prize! Dear David Prutchi, Congratulations! We think your DOLPi – RasPi Polarization Camera is awesome and you are one of our top 100 picks for the Hackaday Prize. You are advancing to the next
Hi! DOLPi is a low-cost polarization camera based on the Raspberry Pi. Like intensity and color, polarization is another property of a light wave. Humans cannot sense polarization, but many animals like cuttlefish and insects have polarization-sensitive vision that they use for navigation, finding water, and detecting transparent prey. This is DOLPi – it is
These are polarization images taken with DOLPi. Colors represent Angle of Polarization
George Musser – an editor at Scientific American (and author of “The Complete Idiot’s Guide to String Theory”) – developed a diy version of the Wu-Shaknov Experiment. If George’s setup truly manages to measure the relative linear polarization of gamma rays from positron-electron annihilation, then he would have accomplished the most inexpensive demonstration of quantum entanglement! The
Abigail and I just returned from a trip to the Galapagos Islands. On the way, we visited the iconic Mitad del Mundo (Middle of the World) monument which commemorates the 18th-century French Geodesic Mission expedition carried out for the purpose of measuring the roundness of the Earth and measuring the length of a degree of latitude at
From today’s SJ Voice: Click here for the full article.
George Musser – an editor at Scientific American (and author of “The Complete Idiot’s Guide to String Theory”) – visited our basement lab a few weeks ago. Today he published a very nice blog about us on the Scientific American site. Thanks George! Click here for the blog.