Prutchi.com

Back from the Galapagos Islands – My best trip yet!

David Prutchi — Sat, 08 Dec 2012 18:25:42 +0000

Abigail and I are back from the Galapagos Islands. This was my fifth time there, and certainly the best yet! Like the two last times, I used Ecoventura to organize the trip, and continue to be impressed by their outstanding dedication to service. Ecoventura operates three 16-passenger cruise yachts and one diving catamaran. The three

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Pilgrimage to the Holy Dish

David Prutchi — Mon, 24 Sep 2012 23:50:26 +0000

This summer we fulfilled a life-long dream (at least for some of us) and visited the Arecibo Observatory in Puerto Rico. This is the largest single-dish radiotelescope in the world. The reflector is 305 m (1,000 ft) in diameter – a tad bit larger than our home-brewed radiotelescope. The Arecibo system is a semi-transit telescope

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Recent Articles About Us

David Prutchi — Thu, 20 Sep 2012 13:47:38 +0000

Our DIY work on Quantum Physics was featured this month in MAKE Magazine and the Philadelphia Exponent!

Sad Day at the Prutchi’s – We will miss our Neutron (May 15, 2002 – May 27, 2012)

David Prutchi — Sun, 27 May 2012 23:41:29 +0000

Product Development

David Prutchi — Tue, 01 May 2012 11:51:18 +0000

Great Time at US Science & Engineering Festival in Washington DC

David Prutchi — Mon, 30 Apr 2012 15:30:13 +0000

We had a fantastic time this weekend at the US Science and Engineering Festival in Washington DC. Among the highlights of our visit, we sat insanely close to the stage for the Q&A with Mythbusters Jamie Hyneman and Adam Savage. We also had the pleasure to meet fellow diy Science authors Theo Gray (Mad Science, The Elements,

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d.i.y. High-Power, Swappable-Head, UV/IR/Visible LED Flashlight with Intensity Control

David Prutchi — Fri, 27 Apr 2012 13:49:53 +0000

I urgently needed a high-intensity UV/IR/visible light source for a work-related industrial inspection project, so this weekend I recruited Abigail to help me build a 10W LED flashlight that features swappable UV/IR/visible heads. We decided to document the build since this flashlight would fit nicely in a photographer’s kit for light painting, IR illumination, UV

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Posted to diyPhysics.com: Testing Electronic Goldmine’s “Giant Super Sensitive Geiger Muller Tube MC6″

David Prutchi — Sat, 31 Mar 2012 14:07:47 +0000

I purchased two “Giant Super Sensitive MC6″ GM tubes from Electronic Goldmine (Item Number : G18717, Unit Price: $89.95). These are Russian-made new-old-stock model MC6. They are 10.25″ long x 0.9″ diameter. I compared the sensitivity of these tubes to the other GM tubes that I use with my CDV700 Pro Geiger Counter. I posted

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Spring in Shakespeare’s Country

David Prutchi — Sat, 24 Mar 2012 14:27:45 +0000

I had some business meetings in England this week, and on my way back to Birmingham Airport I stopped in Stratford-Upon-Avon to see the houses where Shakespeare was born and died. Warwick Castle was also along the way, so I stopped briefly to take a few pictures before sunset.

Abigail’s Whimsical Sand Pendulum

David Prutchi — Sun, 18 Mar 2012 14:57:45 +0000

On a recent trip to Israel, Abigail (10) saw a very pretty, large, and expensive sand pendulum. In it, the pendulum was able to swing, while at the same time, the sand pan was able to rotate freely. We applied our motto “Why buy it if we can MAKE it!”. Back at home, we set

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