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

Facebook Flickr LinkedIn YouTube RSS
magnify
Home Articles posted by David Prutchi
formats

Nuclear Magnetic Resonance in Cobalt with a Grid Dip Meter

Hackaday published an excellent article by Al Williams titled “The Grid Dip Meter: Forgotten Instrument”.   This reminded me of an interesting physics experiment that really helped me back in college to understand the mechanism behind nuclear resonance.  The experiment was described as a note in the American Journal of Physics in 1963:  R.J. Blume,

 
 Share on Facebook Share on Twitter Share on Reddit Share on LinkedIn
Comments Off on Nuclear Magnetic Resonance in Cobalt with a Grid Dip Meter  comments 
formats

Video of Shanni’s Lecture on Entangled Photon Generation at HaD SuperCon

Shanni presented on “Construction of an Entangled Photon Source for Experimenting with Quantum Technologies” at the 2015 Hackaday SuperConference. Her lecture has been uploaded by Hackaday and is available now available online.  CLICK HERE for the link to the HaD Blog and Video.  

 
 Share on Facebook Share on Twitter Share on Reddit Share on LinkedIn
Comments Off on Video of Shanni’s Lecture on Entangled Photon Generation at HaD SuperCon  comments 
formats

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

 
 Share on Facebook Share on Twitter Share on Reddit Share on LinkedIn
Comments Off on DOLPi DIY Polarimetric Camera Awarded 5th Place in 2015 Hackaday Prize  comments 
formats

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

 
 Share on Facebook Share on Twitter Share on Reddit Share on LinkedIn
Comments Off on DOLPi Final Version of Whitepaper and Video  comments 
formats

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

 
 Share on Facebook Share on Twitter Share on Reddit Share on LinkedIn
Comments Off on DOLPi is a Hack-a-Day Prize Finalist!  comments 
formats

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

 
 Share on Facebook Share on Twitter Share on Reddit Share on LinkedIn
Comments Off on New Liquid Crystal Panel AC driver for DOLPi  comments 
formats

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

 
 Share on Facebook Share on Twitter Share on Reddit Share on LinkedIn
Comments Off on New Version of DOLPi Whitepaper Released (v4)  comments 
formats

DOLPi Whitepaper V.3 Published

The new version of the whitepaper is available at: DOLPi_Polarimetric_Camera_D_Prutchi_2015_v3

 
 Share on Facebook Share on Twitter Share on Reddit Share on LinkedIn
Comments Off on DOLPi Whitepaper V.3 Published  comments 
formats

New DOLPi Project Overview Video Uploaded

 

 
 Share on Facebook Share on Twitter Share on Reddit Share on LinkedIn
Comments Off on New DOLPi Project Overview Video Uploaded  comments 
formats

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

 
 Share on Facebook Share on Twitter Share on Reddit Share on LinkedIn
Comments Off on New, Complete Version of DOLPi Whitepaper Available  comments 
formats

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

 
 Share on Facebook Share on Twitter Share on Reddit Share on LinkedIn
Comments Off on DOLPi_Mech: A Slower But Accurate Imaging Polarimeter  comments 
formats

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

 
 Share on Facebook Share on Twitter Share on Reddit Share on LinkedIn
Comments Off on DOLPi is a Hack-a-Day 2015 Semifinalist!  comments 
formats

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

 
 Share on Facebook Share on Twitter Share on Reddit Share on LinkedIn
Comments Off on Hack-A-Day 2015 Prize DOLPi Submission Video  comments 
formats

DOLPi’s first pictures outside the lab

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

 
 Share on Facebook Share on Twitter Share on Reddit Share on LinkedIn
Comments Off on DOLPi’s first pictures outside the lab  comments 
formats

DOLPi – A Low-Cost RasPi-based Polarization Camera

DOLPi – A Low-Cost RasPi-based Polarization Camera A polarimetric imager to detect invisible pollutants, locate landmines, identify cancerous tissues, and maybe even observe cloaked UFOs! The polarization of light carries interesting information about our visual environment of which we are usually unaware. Some animals have evolved the capability to see polarization as a distinct characteristic

 
 Share on Facebook Share on Twitter Share on Reddit Share on LinkedIn
1 Comment  comments