Trying hard to confuse future archeologists.

Finding little bits and pieces of the universe that aren't in the right place and sorting them out,
hopefully in somebody elses garage.

If you really want to appreciate nature, you need to either rake it or shovel it.

You can never have too many clamps.

The confirmed gadget builder soon learns one rule: never throw anything away!
From "Home-Built Photo Equipment" by Walter E. Burton, Little Technical Library, 1947

Buckle up! It makes it harder for the aliens to suck you out of your car!
Seen on a bumper sticker.

You can observe a lot by watching.
Yogi Berra

Every version of every browser on every platform is different.

J2ME: Every phone is broken in a different way.

Java: write once, debug everywhere.

Don't argue with anything that outweighs you by an order of magnitude.

Don't argue with a rattlesnake.

Besides the three Rs, I would teach kids to learn to draw, play a musical instrument and play chess.

Never try to teach a pig to sing. It wastes time and annoys the pig.
Mark Twain

Never interrupt your enemy when he is making a mistake.
Napoleon Bonaparte

It is better to remain silent and be thought a fool than to open your mouth and remove all doubt.
Abraham Lincoln or Mark Twain or perhaps Proverbs 17:28.

Be yourself; everyone else is already taken.
Oscar Wilde

An amateur practices until he gets it right; a professional practices until he can't get it wrong.
See: Quote Investigator

My stuff

Everything is here

Or go straight to the picture gallery

Or go straight to the 3D picture gallery

Or go to the video gallery instead

MIT Henge

In June 2010, Arlington cable TV gives me the Iron Man volunteer award.

In June of 2009, Cambridge Boat Club names an Empacher double shell after me.

Patent 6,720,936   Adaptive Antenna System

A telescope drive corrector circuit that I published in Sky & Telescope seems to have been copied into a spanish astronomy book.

A pinhole camera photograph

A 4x5 paper negative picture taken with an elliptical pinhole camera made from a candy tin.

Robbins Farm Park Sundial Project

Analemmatic Sundial Project

Lists of Boston Area Events

Johnny's List of Quirky Events

Fred Hapgoods List of Science Lectures

Public events at the Harvard-Smithsonian Center For Astrophysics

Tractor and Engine Shows


Amateur Telescope Makers of Boston (ATMoB)

New England Model Engineering Society (NEMES)

Photographic Historical Society of New England (PHSNE)

Antique Telescope Society (ATS)

North American Sundial Society (NASS)

Stereo New England (SNE)

National Stereoscopic Association (NSA)

Traditional Small Craft Association (TSCA)

Dorkbot Boston

Prospect Hill Forge

Arlington Community Media


7 Day Forecast

New England Surface Weather Map

Boston Radar

National Hurricane Center

Satellite Photo

Sunrise and Sunset

Moonrise and Moonset

Sunrise, Sunset, Sunpath

Boston Tides

California-Nevada Earthquakes

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