Experimental Modern and Quantum Physics for Do-It-Yourself Science Enthusiasts 

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DOLPi DIY Polarimetric Camera Awarded 5th Place in 2015 Hackaday Prize

The DOLPi Raspberry Pi-based polarimetric cameras received 5th place in the 2015 Hackaday Prize.  Winners for this year’s prizes were announced on stage at the Hackaday Superconference on November 14, 2015. The DOLPi project involved the development and construction of two low-cost polarimetric camera types based on the Raspberry Pi 2. DOLPi-MECH (and its productized IR-VIS-UV

 
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DOLPi Final Version of Whitepaper and Video

  The final version of the DOLPi whitepaper is now available here: DOLPi_Polarimetric_Camera_D_Prutchi_2015_v5

 
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DOLPi is a Hack-a-Day Prize Finalist!

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

 
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New Liquid Crystal Panel AC driver for DOLPi

​ 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

 
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New Version of DOLPi Whitepaper Released (v4)

A new version of the DOLPi polarimetric camera whitepaper has been released at: DOLPi_Polarimetric_Camera_D_Prutchi_2015_v4

 
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DOLPi Whitepaper V.3 Published

The new version of the whitepaper is available at: DOLPi_Polarimetric_Camera_D_Prutchi_2015_v3

 
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New DOLPi Project Overview Video Uploaded

 

 
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New, Complete Version of DOLPi Whitepaper Available

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

 
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DOLPi_Mech: A Slower But Accurate Imaging Polarimeter

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

 
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DOLPi is a Hack-a-Day 2015 Semifinalist!

“From: no-reply-projects@hackaday.com 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

 
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Hack-A-Day 2015 Prize DOLPi Submission Video

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

 
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DOLPi’s first pictures outside the lab

These are polarization images taken with DOLPi.  Colors represent Angle of Polarization  

 
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diy Wu-Shaknov Experiment: Cheapest Demonstration of Quantum Entanglement?

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

 
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Bad Physics at the Equator – Shame on the Intiñan Solar Museum!

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

 
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Article in SJ Voice: Father & Daughter Team Up to Make Science Accessible for Everyone

From today’s SJ Voice: Click here for the full article.

 
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