Friday, February 04, 2011

Don't know much about geometry

Yes, we wrap infants in Terrible Towels (that almost sounds like child abuse), Art Rooney's biography is an awful lot better known than say William McKinley's*, and an order of magnitude more folks can sing the Pittsburgh Polka than can identify Dvořák, but do we know what we think we know?

By 2nd grade you should have been taught that the Steelers Logo is made up of 3 hypocycloids.  Yet, if you actually look it up, there are lots of hypocycloids.  For example, this is accurately described as a hypocycloid:  the deltoid, or this unnamed 'oid'. Hypocycloids one and all. None of those shapes will be caught on the side of any neomodern Steelers logo. To just describe them as hypocycloids is a lot less precise than just saying they are 3 diamond-like shapes of different colors.

The logo the Steelers use has 3 shapes that are one particular type of hypocycloid.  Ready for this?

They're Tetracuspids, also known colloquially as Astroids.

want more.... here is the optional reading.

* McKinley being Pennsylvania's only elected President to date. (Back to school for me, I guess Buchanan is the only 'official' President from Pennsylvania.  I got confused because I knew McKinley had attended Allegheny. ).  Still.

7 Comments:

Anonymous Anonymous said...

Go Gators!

They actually have a McKinley Food Court at Allegheny College. According to legend, McKinley was thrown out of school for taking a cow to the top of the bill tower at Bentley Hall.

http://www.allegheny.edu/news/releases/alleghenys_in_on_the_prank_this_time_mckinleys_cow_returns_to_bentley_hall_for_reunion_weekend_2002.php

Friday, February 04, 2011 9:04:00 AM  
Anonymous DBR96A said...

Pennsylvania suffers from the curse of James Buchanan. For being the home state of the worst president in U.S. history, and the one who pushed the plunger that ignited the Civil War, Pennsylvania has not produced a president since, and Ohio has tied Virginia for producing the most presidents. It is worth examining, though, if Ohio now suffers from the curse of Warren G. Harding...

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