Charles Wheatstone’s Polar Clock tells time by locating the plane of polarization of light from the sky.
- Why does the date of Easter move about so much?
- Before the resurrection: Four Immediate Results of Jesus’ Death on the Cross
- Chuck Pergiel gets it: Chuck Key. I wish more people understood things like this.
Imagine the uses:
- Special effects
- Psychological warfare
- Individual psychological manipulation
You could know it was a fake, and the visual image would still have its effect.
A Navy training film from 1953 about the fire control computer:
It’s probably inaccurate to say that Americans today are less intelligent than they were sixty years ago; probably, but maybe not.
UPDATE 14 March 2016: See the Norden bombsight.
Broken Promises of the Wankel Engine, by Adam Fabio
All designs are good for some applications and bad for others. It seems those the Wankel is bad for include (so far) general-purpose automobiles.
If you’ve looked up at one and thought, “what the heck is that? what are they doing now?” you can begin by reading A Field Guide to the North American Utility Pole, by Dan Maloney.
and progressive scientists
“…the force of these ideas in popular culture — that is, the authority of science, the imperative of progress, and the soundness of [xxxxxx] — conspired to create a social environment that conditioned the people to [xxxxxx]. Had not science instructed us that [xxxxxx]? Were not the leading white progressive clergymen of the era telling us that God smiled on [xxxxxx]? — Ota Benga: Victim of Science & Progress, by Rod Dreher
See how many ways you can fill in the blanks.
Most things the government says about food, sex, and religion are either false or were obvious to our great grandparents.
In particular, scientists don’t have any idea what people should eat or aovid, except in extreme cases like “don’t eat sand.” Or rather, they have lots of ideas, but they all turn out to be wrong in a few years.
Or, Donall and Conall Meet Richard Dawkins:
Read more at William M. Briggs’ site, where he considers the claim that miracles don’t happen so miracles don’t exist.
But I’m not crazy. The foil is only there to block the scanners. The bank sent out the new credit card a while ago, and it has a chip in it. After reading about the potential risks, it seemed like some shielding wouldn’t hurt anything. But how to know if the shielding worked?
At one work site, I get access to the facility by putting my id card against a scanner. This works even if I just hold my wallet up to the scanner. This seems like a reasonable basis for testing. The first thing I put in my wallet was a piece of what seemed to be metalized paper from a coffee package. Holding up my wallet still activated the door, so a coffee bag probably will not block the scanners the men in black would carry if there were men in black following me.
Next time I went out to that site, I folded up four layers of regular aluminum foil and put that in my wallet. The scanner didn’t work. A week or so later I tried it again, and this time scanner did read my card through the foil. Thinking it might be because the foil had compressed, I opened up the foil and interleaved a piece of paper. My knowledge of electricity and magnetism is close to the cargo-cult level, you see. Anyway, this seemed to work, but I’ll test it again from time to time.
If I come across some sheet copper I’ll try that too. A couple of business-card size pieces of copper with the Lord’s Prayer engraved on it would probably excite less interest than a packet of aluminum foil.