A prism is mounted on a prism pole and the bubble is centered. The back of the prism assembly is barely touching something vertical, say a wall or a ...

She Who Must Be Obeyed Who introduced us to this appellation? And, what is the source?

Everything done in recent decades has involved black magic boxes and the belief that what shows up on a screen is gospel truth. Never doubt the man b...

@murphy Even using early surveyors, it was easie for one person to tip the pole end over end in what was thought to be a straight line until one re...

@joe-ferg Agreed. But, we need to keep the lights on in the Harness house so Wendell and Angel, our benefactors, only bump into each other in the ...

@murphy You may have been talking with distant relatives of mine. It took five generations to get any to move very far from the first generation's ...

@lurker However, there have been maybe 1000 views in those recent five days but absolutely no one has chosen to offer a comment of any kind. We ne...

This thread started a week ago but all of the comments were made in the first two days. There are approximately 2500 views so far but the meat of the...

This thread has nearly 1700 views in its first week, but, all of the comments were made in the first two days. "computer" searches like the words in ...

The thread title must not interest "computer" searches. Human searches differ from "computer" searches. Keep that in mind when you create new posts....

😀 😀 😀 😀 😀 😀 😀 😀 😀 😀 I sleep well every night because I chose to nev...

Give them a small magnifying glass at the same time. At one time I had a small pocket watch with the cover being a magnifying glass. That was handi...

@andy-nold In 1966 Topeka, Kansas was hit by a big tornado that was on the ground all the way from the southwest corner of the city to the northeas...