Quotulatiousness

December 18, 2010

The day the American Falls ran dry

Filed under: Environment, History, USA — Tags: , , — Nicholas @ 13:07

The day Niagara Falls ran dry:

“In June 1969, U.S. engineers diverted the flow of the Niagara River away from the American side of the falls for several months.

“Their plan was to remove the large amount of loose rock from the base of the waterfall, an idea which they eventually abandoned due to expense in November of that year.

[. . .]

To achieve this the army had to build a 600ft dam across the Niagara River, which meant that 60,000 gallons of water that flowed ever second was diverted over the larger Horseshoe Falls which flow entirely on the Canadian side of the border.

“The dam itself consisted of 27,800 tons of rock, and on June 12, 1969, after flowing continuously for over 12,000 years, the American Falls stopped. Over the course of the next six months thousands of visitors flocked to the falls to witness the historic occasion.

I remember seeing this, although as I was nine at the time, I can’t say with certainty that it was in person . . . I might be mistakenly remembering seeing it on TV, although my family visited Niagara Falls frequently during the late 1960s and early 1970s.

Unwelcome discoveries in China’s past

Filed under: China, History, Science — Tags: , — Nicholas @ 12:38

Strategy Page looks at some recent archaeological and DNA study results that are not popular with China’s government:

Chinese scientists, conducting genetic research in western China, recently tested the people in an ancient, and remote, village, and found that the DNA of the villagers was 56 percent Caucasian (Indo-European). The current theory is that these people are descendants of Roman soldiers who were long rumored to have established an outpost on this eastern end of the ancient Silk Road (the caravan route from China to the Middle East.) The Chinese are not happy with findings like this.

The Chinese government has long been uneasy about archeologists and anthropologists finding evidence of European peoples living, and settling, in western China thousands of years ago. The Chinese have a high opinion of themselves (often justified), but because of the European role in humiliating China in the 18th and 19th centuries, they are uncomfortable with the idea that the damn Europeans have been in their neighborhood even earlier. Earlier discoveries included very old (more than 3,000 years ago) burial sites containing tall, blonde, warriors. There was also a village of ancient Jews in western China, where the people had only stopped practicing Jewish religious rituals in the last century.

[. . .]

The Chinese may be unhappy simply because they have to give the “northern barbarians” credit for driving the Indo-Aryan tribes away, rather than letting Chinese soldiers do it. Thus it’s currently a big deal in China anytime Chinese technology, or diplomats, beats the Westerners. In the Chinese universe, it’s the supreme insult for foreigners to best the Chinese, militarily or otherwise. But for the last few centuries, that is what happened. China isn’t really looking for a war with the West, but politicians find it easy to win approval by playing up the might of the motherland, and what China can do (in theory) if anyone messes with us. That process induces some amnesia about what has really happened in the past, but that’s what nationalism and demagoguery are all about.

Man bites dog story, military style

Filed under: Military, Technology, USA — Tags: , , , , — Nicholas @ 11:42

In Afghanistan and Iraq, they are finding uses for manned aircraft to supplement Predator UAV patrols:

The U.S. Air Force MC-12 “manned UAV replacement” has been in Afghanistan for a year, and has proved successful. This despite the fact that it can only stay in action for seven hours per sortie, versus more than twice the hours for a UAV. But the military needs more UAV capabilities (vidcams overhead for hours at a time), and doesn’t care if the pilots are in the air or on the ground.

[. . .]

The MC-12 is basically a militarized version of the Beech King Air. The army began using the Beech aircraft as the RC-12 in the 1970s, and has been seeking a replacement for the last few years. But then it was realized that the RC-12 was suitable for use as a Predator substitute.

The King Air 350 is a 5.6 ton, twin engine aircraft. The MC-12 can stay in the air for up to eight hours per sortie. Not quite what the Predator can do (over 20 hours per sortie), but good enough to help meet the demand. The MC-12 has advantages over UAVs. It can carry over a ton of sensors, several times what a Predator can haul. The MC-12 can fly higher (11 kilometers/35,000 feet) and is faster (over 500 kilometers an hour, versus 215 for the Predator.) The MC-12s cost about $20 million each, more than twice what a Predator goes for. The MC-12’s crew consists of two pilots and two equipment operators. Some of the sensors are operated from the ground.

The fascinating economics of Chinese manufacturing

Filed under: China, Economics, Tools, Woodworking — Tags: , — Nicholas @ 11:17

An interesting post at the Bridge City Tools blog about how Americans (and Canadians) are actually willing to pay the outrageous price of $5 for a single 1/8″ drill bit:

About 10 years ago I was in an OEM Chinese factory that made bench grinders. You have seen them, 1/2 HP motor, two 6” grinding wheels, pig tail cord, a small plastic face shield and no nameplate — these would be attached by the American companies that bought them. The total cost per grinder, landed in the US was $7.15. Of course at this price it would be asking too much for a UL tag.

These grinders were, and still are being sold here and the prices range from $49 to $200 — awesome margins by any standard.

Behind the factory floor there was a small mountain of insulated wire that had been pulled from old cars, appliances, televisions and the like and it was replenished daily. Surrounding the wire mountain were a couple of dozen women who were stripping the wire of insulation. These wire remnants were then spliced together and used in the grinder motor windings. Completely illegal, and dangerous. But cheap.

I thought I was shocked until I walked into the factory section that made twist drill bits. Here they were making, for the AMERICAN MARKET, those 59, 89, 119 pc drill sets found at the box stores and other discount joints for $19.95. Again, there were rows of women who were dipping the bits in what looked like Easter egg dye.

I asked the interpreter what they were doing. He replied, “They are making all the bits the same color as these four.” The four bits he pointed out were the 1/8”, 1/4”, 3/8” and the 1/2”.

I asked why.

I learned that those four bits were properly hardened. The remaining 115 bits were made with what I call pot metal. The reason?

“Because those are the only four hole sizes that Americans use.”

I asked, as politely as I could, if there was any guilt or remorse for duping their American customers. The reply was shocking.

“In America, if it cost less than $20, nobody complains about quality — everybody in China knows this.”

It’s an interesting explanation . . . and has the ring of truth to it: I’ve got several sets of drill bits, most of them bought from a reputable source (Lee Valley Tools), but I have one “big” set bought from a big box store (I think it’s branded as DeWalt, but probably made in China).

Most of the sizes of drill I use in woodworking are from the Lee Valley sets, but I think I’ve only used the 1/16″ and 1/8″ bits from the big box set. I wonder what’d happen if I tested all the rest of that set?

I have to admit being guilty of this:

More recently, I found myself at the local paint shop to purchase a Purdy paint brush — I have always liked them. So when I walked into the store I asked the sales rep to show me the most expensive brushes…

“I don’t get asked that very often…” he replied.

I then learned that the cheapest brushes outsell the flagged end bristle brushes by about 20 to one. The reason?

So people can throw them away rather than clean them.

In my defence, I can say that I get several uses from each of the “disposable” brushes because I do clean them after each use, but I do eventually throw them away. Once the quality of the applied stain or finish starts getting worse, it’s time to get rid of the brush.

Interesting hand-powered table saw

Filed under: Technology, Tools, Woodworking — Tags: , — Nicholas @ 11:06

I thought this was a joke . . . but those are some pretty impressive results shown in the video.

H/T to BoingBoing for the link.

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