The Sandwheel

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This is a variation on a perpetual motion machine proposed by the Indian mathematician Bhāskara II around 1150. Each of the wheel’s tilted spokes is filled with a quantity of sand. As the tubes descend on the right, the sand within them shifts outward, exerting greater torque in the clockwise direction and thus keeping the wheel turning forever.

Unfortunately the same design ensures that there’s always a greater quantity of sand on the left, so nothing happens.

Matriarch

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In 1956, ornithologist Chandler Robbins tagged a wild female Laysan albatross at the Midway Atoll National Wildlife Refuge in the North Pacific. The bird, dubbed Wisdom, went on to a stunning career, flying more than 3 million miles, equivalent to 120 trips around the Earth. She has been seen at the atoll as recently as last December, making her, at 72, the the oldest known wild bird in the world.

In that time she’s hatched as many as 36 chicks, a significant contribution to the struggling wild albatross population. The U.S. Fish and Wildlife Service wrote, “Her health and dedication have led to the birth of other healthy offspring which will help recover albatross populations on Laysan and other islands.” Bruce Peterjohn, chief of the North American Bird Banding Program, added, “To know that she can still successfully raise young at age 60-plus, that is beyond words.”

Bootstraps

The 45-letter pneumonoultramicroscopicsilicovolcanoconiosis is often cited as one of the longest words in English — it’s been recognized both by Merriam-Webster and by the Oxford English Dictionary. The OED Supplement traced it to a 1936 puzzle book by Frank Scully called Bedside Manna, defining it as “a disease caused by ultra-microscopic particles of sandy volcanic dust.” But in fact it had appeared first in a Feb. 23, 1935, story in the New York Herald Tribune:

Puzzlers Open 103rd Session Here by Recognizing 45-Letter Word

Pneumonoultramicroscopicsilicovolcanoconiosis succeeded electrophotomicrographically as the longest word in the English language recognized by the National Puzzlers’ League at the opening session of the organization’s 103d semi-annual meeting held yesterday at the Hotel New Yorker.

The puzzlers explained that the forty-five-letter word is the name of a special form of silicosis caused by ultra-microscopic particles of silica volcanic dust …

At the meeting NPL president Everett M. Smith had claimed the word was legitimate, but in fact he’d coined it himself. Distinguished by the newspaper, it found its way into Scully’s book and thence into the dictionaries, “surely one of the greatest ironies in the history of logology,” according to author Chris Cole. Today it’s recognized as long but phony — Oxford changed its definition to “an artificial long word said to mean a lung disease caused by inhaling very fine ash and sand dust.”

(Chris Cole, “The Biggest Hoax,” Word Ways 22:4 [November 1989], 205-206.)

Invisible Artworks

For his 1959 work Zone de Sensibilité Picturale Immatérielle, Yves Klein sold the ownership of empty space.

In its 1967 Air-Conditioning Show, English conceptual collaborative Art & Language presented an empty room containing two air conditioning units; the artwork was “what is felt and said about it.”

James Lee Byars’ 1969 work The Ghost of James Lee Byars consisted of the emptiness and darkness of a pitch-black room.

Robert Barry communicated his 1969 Telepathic Piece mentally to visitors; the artwork was “a series of thoughts that are not applicable to language or image.”

Andy Warhol’s 1985 Invisible Sculpture was entirely intangible.

Tom Friedman’s 1992 work Untitled (A Curse)” consisted of a region of empty space that had been cursed by a witch.

Roman Ondak’s 2006 work More Silent Than Ever was an empty exhibition room in which a covert listening device had allegedly been hidden; visitors were told they were being monitored, but no evidence was ever given that the device really existed.

Salvatore Garau’s 2021 sculpture Io Sono occupied an area 5 feet square but was otherwise imperceptible.

Ruben Gutierrez’s 2022 work This Sculpture Makes Me Cry (A Spell) was said to represent what the artist could not see but which affected him emotionally.

Warhol and Gutierrez both presented their sculptures on white pedestals. Is there any way to prove they’re not the same piece?

The Glass Rod Problem

Suppose we drop a glass rod and it breaks into three pieces. What is the probability that the pieces can form a triangle? Mathematician D.C. Johnson found this elegant geometric solution. In order to form a triangle, none of the three pieces can be longer than the other two combined. Now consider an equilateral triangle whose altitude equals the length of the glass rod (say, 1). Viviani’s theorem tells us that the sum of the lengths of the perpendiculars from any interior point to the sides of this triangle is 1, the triangle’s altitude:

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Image: Wikimedia Commons

And any three non-negative numbers whose sum is 1 correspond to three such perpendiculars in some prescribed order. So the points inside the triangle correspond to all the various ways in which the glass rod can break.

Now consider the first piece of the broken rod. In order to form a triangle with the other two pieces, its length must not exceed 1/2. That means it must not extend from the base of our equilateral triangle into the shaded zone here:

glass rod problem 2

And if we assign the other two pieces to the other two legs, we can make the same argument and identify two more zones:

glass rod problem 2

That immediately gives the answer: The chance that all three pieces will be short enough to produce a triangle is 1 in 4.

(C. Haigh, “The Glass Rod Problem,” Mathematical Gazette 65:431 [March 1981], 37-38.)

The Desk Calendar

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Image: Wikimedia Commons

This is a variation on an old puzzle by Martin Gardner. This desk calendar currently displays the date Monday, April 25. If the six cubes are capable of displaying any day of the week and any date from January 01 to December 31, what characters appear on the unseen faces in the picture? Gardner wrote, “It is a bit trickier than one might expect.”

Click for Answer

“The Last Bard of Dixie”

South Carolina poet J. Gordon Coogler (1865-1901) was widely mocked for this terrible couplet:

Alas! for the South, her books have grown fewer —
She never was much given to literature.

He complained,

Oh you critics! — If an author errs in a single line,
That line you’ll surely quote,
And will give it as a sample fair
Of all he ever wrote.

But he was bad everywhere:

On her beautiful face there are smiles of grace
That linger in beauty serene,
And there are no pimples encircling her dimples
As ever, as yet, I have seen.

His complete works are here.