Smoot Marks
In the fall of 1991, my involvement with the New Student Orientation program at my alma mater found our group attending a national conference in Boston. We arrived from Los Angeles two days early to take in some of the sights of autumn in New England. We strolled past a certain university campus in Cambridge just to be able to say, “Yeah, I went to Harvard.” And as we crossed the Charles River on the Massachusetts Avenue bridge, I noticed that there were lines painted at regular intervals. Further investigation revealed these to be Smoot marks.
What is a Smoot mark? In the spirit of a last-minute term paper, let me borrow liberally from Wikipedia:
The smoot is a nonstandard, humorous unit of length created as part of an MIT fraternity prank. It is named after Oliver R. Smoot, a fraternity pledge to Lambda Chi Alpha, who in October 1958 lay down repeatedly on the Harvard Bridge (between Boston and Cambridge, Massachusetts) so that his fraternity brothers could use his height to measure the length of the bridge.
One smoot is equal to Oliver Smoot's height at the time of the prank, 5 feet 7 inches (1.70 m). The bridge's length was measured to be 364.4 smoots (2,035 ft; 620.1 m) "+/− 1 εar" with the "+/−" showing measurement uncertainty and spelled with an epsilon to further indicate possible error in the measurement.
Oliver Smoot was selected by the fraternity pledgemaster because he was the pledge deemed shortest (thereby making measuring the bridge the most labor-intensive), and "most scientifically named." To implement his use as a unit of measure, Smoot repeatedly lay down on the bridge, let his companions mark his new position in chalk or paint, and then got up again. Eventually, he got tired from so much exercise and was carried thereafter by the fraternity brothers to each new position.
The markings are recognized as milestones on the bridge, to the degree that during bridge renovations in the 1980s, the Cambridge police department requested that the markings be restored, as they were routinely used in police reports to identify locations on the bridge. (Source: Smoot - Wikipedia)
As for Oliver himself? Well, he graduated from MIT with the class of 1962, became a lawyer, and later became chairman of the American National Standards Institute (ANSI, 2001–02) and then, president of the International Organization for Standardization (ISO, 2003–04). It turns out he is a "distant relative" of Nobel Prize in Physics winner George Smoot. (Looks like he was destined for this after all.) And on the 50th anniversary of the initial measurement, a commemorative plaque was unveiled at the bridge:
