Archive for March, 2005

Interesting Physics Rehash

Context: braking (e.g. in a vehicle)

Revisited:

  • Braking time increases linearly with velocity; t = v/a.
  • Braking _distance_ increases with the square of the velocity
    • d = v*t - ½*a*t²
    • substituting t=v/a, d = v*v/a - ½*a*v²/a²
    • d = v^2/a - ½*v²/a
    • d = ½*v²/a
    • assuming a is a constant, d ~ v²

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Initial D Misfiring System

For those of us who wondered what the heck it was…(or wasn’t paying attention)

A misfiring system (or more appropriately, an ALS, anti-lag system) is used in a turbocharged car to keep the turbo boosted when the driver lifts off the accelerator. When that happens, the ignition timing is severely delayed and the fuel/air mixture is enriched. Thus when the spark plug fires, most of mixture has already left through the open exhaust valve and combusts in the downpipe on the way to the turbo, keeping it spooled but not contributing any power to the crankshaft (and the drive wheels).

source

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Asian-ness

My web-interest of the day has been reading Secret Asian Man comics where I came across a strip about an asian McDonalds. Talk about weird…

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D.C.

Next time I go I want to see:

* SR-71 at the Smithsonian National Air & Space Museum

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Let’s talk about Robots

It’s been a while since I’ve done a movie review. Sneak preview was courtesy of Teresa and BB. Short movie deserves a short concise(?) review.

Robots was a movie without any lulls in the middle; it kept the excitement up throughout. It does help that it was a short movie. (at least it seemed that way) Lots of excitement for kids and the usual (clean) adult trinkets thrown in to amuse the parents and couples who watch the movie as a date. If you liked those (someone help me out here) convoluted machines where a toaster goes off and sets off another device, etc…you’ll like the thought the CG’ers put into it. Since it had a lot in the nerd department, I’d give it a higher rating than other full length animations I’ve seen. Probably not higher than a lot of animes in terms of best picture kind of category, but definitely a movie to be seen.

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$0.05 a song

A proposal has been made to categorize and sell music online for 5 cents a song to capitalize on the massive amounts of downloading that’s been going on. It goes even further, proposing that giant internet companies buy up the four largest labels…

Slashdot discussion.

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Flexitarianism

People who aren’t strictly vegetarians.

* Wikipedia entry
* MSNBC article

I guess you’re a flexitarian, Julie (by choice), Shihab… :p

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