Misc Physics

1. An object’s motion can be described by derivatives and integrals of displacement. The first few derivatives — position, velocity, and acceleration — are familiar, but the succeeding ones have pleasing names: jerk, jounce (also known as snap), crackle, pop, lock, and drop.

The integrals of displacement are absement, absity, abseleration, abserk, and absounce. More here. (Thanks, Colin.)

2. The quarks now known as “bottom” and “top” were sometimes referred to initially as “beauty” and “truth.” Collider experiments designed to produce large numbers of B mesons are sometimes called “beauty factories.” (Thanks, Jackson.)

3. Reader Nick Ortenzio found this unexpectedly poignant quote in the Wikipedia article on false vacuum, from a paper in which Sidney Coleman and Frank De Luccia consider the prospect that our universe exists in an unstable bubble that might wink into a new state and annihilate us:

The possibility that we are living in a false vacuum has never been a cheering one to contemplate. Vacuum decay is the ultimate ecological catastrophe; in the new vacuum there are new constants of nature; after vacuum decay, not only is life as we know it impossible, so is chemistry as we know it. However, one could always draw stoic comfort from the possibility that perhaps in the course of time the new vacuum would sustain, if not life as we know it, at least some structures capable of knowing joy. This possibility has now been eliminated.

Lento

At a performance by an Italian string quartet, George Bernard Shaw’s companion remarked, “These men have been playing together for 12 years.”

Shaw said, “Surely we have been here longer than that.”

Words to Remember

https://en.wikipedia.org/wiki/File:Sans_Forgetica_font_sample.jpg

Designed by a multidisciplinary team at Melbourne’s RMIT University, Sans Forgetica is a typeface that’s intended to reduce legibility, on the theory that the “desirable difficulty” of reading it will result in deeper processing and, ultimately, better retention.

The back-slanted, incomplete letters form a “simple puzzle” for the reader, RMIT lecturer Stephen Banham told the Washington Post last October. “It should be difficult to read but not too difficult. In demanding this additional act, memory is more likely to be triggered.”

The team say they’ve tested the font on university students and found that “Sans Forgetica broke just enough design principles without becoming too illegible and aided memory retention.” You can try it yourself — they’re offering a free download and a Chrome extension.

A Surprise First

https://www.publicdomainpictures.net/en/view-image.php?image=275931&picture=vatican-city-and-rome-skyline

The residents of Vatican City drink more wine per person than any other country, at least as of 2014 — 74 liters per year, or about 105 bottles, twice the amount drunk by the average person in France and three times that in the U.K.

The state’s tiny size — just 800 people — means that such figures are easily skewed, and Vatican residents tend to be old, male, and highly educated and to eat in large groups, all of which can contribute to higher wine consumption. (So does the use of ceremonial Communion wine.)

An overlooked additional factor: Wine sold in the Vatican supermarket is subject to a lower tax than in Italy — which attracts customers from the broader vicinity and may drive up the numbers.

No One Home

https://commons.wikimedia.org/wiki/File:Joan_Risch.jpg

On the afternoon of Oct. 24, 1961, 31-year-old Joan Risch was found to be missing from her home in Lincoln, Massachusetts. Blood that matched her type was found in the kitchen and the driveway, a table had been overturned, and a telephone handset had been torn from the wall. Risch’s 2-year-old son was safe in his crib upstairs. Her husband, returning from a business trip, said he could not explain the source of some empty beer bottles in a wastebasket.

Risch had last been seen wearing a trench coat and carrying something red quickly up her driveway, toward the garage. Several people reported having seen a two-tone blue car in the neighborhood, and possibly in Risch’s driveway, at about the time of her disappearance, and a number of witnesses reported having seen a disoriented woman matching Risch’s description walking along nearby roads.

Some time after her disappearance, it was discovered that Risch had checked out 25 books on murders and missing-persons cases over the summer of 1961. The case has never been solved. Both Risch’s husband and police chief Leo Algeo died in 2009. Algeo said, “I thought they’d find a body or bones or something. … Things do turn up. People don’t disappear without a trace.”

The Slave Bible

In 1807, three years after the Haitian Revolution, someone decided to edit the Bible that was provided to Caribbean slaves to omit any inducements to rebel. The result was Select Parts of the Holy Bible, for the Use of the Negro Slaves in the British West-India Islands, a heavily redacted version that includes Joseph’s enslavement in Egypt but omits Moses leading the Israelites to freedom.

The anonymous editors were “really highlighting portions that would instill obedience,” Museum of the Bible curator Anthony Schmidt told History.com. Also cut were Galatians 3:28 (“There is neither Jew nor Greek, there is neither bond nor free, there is neither male nor female: for ye are all one in Christ Jesus”) and the Book of Revelation, which tells of a new world in which evil will be punished.

But they retained Ephesians 6:5: “Servants, be obedient to them that are your masters according to the flesh, with fear and trembling, in singleness of your heart, as unto Christ.”

Here’s a copy.

The Groaning-Board

At the sign of the Wool-sack, in Newgate Market, is to be seen a strange and wonderful thing, which is an elm board, being touched with a hot iron, doth express itself as if it were a man dying with groans, and trembling, to the great admiration of all the hearers. It hath been presented before the king and his nobles, and hath given great satisfaction.

London handbill, 1682

One of the most curious and ingenious amusements ever offered to the publick ear was contrived in the year 1682, when an elm plank was exhibited to the King and the credulous of London, which, being touched by a hot iron, invariably produced a sound resembling deep groans.

This sensible, and very irritable board, received numbers of noble visitors; and other boards, sympathising with their afflicted brother, demonstrated how much affected they might be by similar means.

— James Peller Malcolm, Anecdotes of the Manners and Customs of London, 1810

In one of William Molyneux’s communications he mentions the exhibition of ‘the groaning-plank’ in Dublin, a curiosity that attracted much attention and many learned speculations about the years 1682 and 1683. He was, however, too much of a philosopher to be gulled with the rest of the people who witnessed this so-called ‘sensible elm-plank,’ which is said to have groaned and trembled on the application of a hot iron to one end of it. After explaining the probable cause of the noise and tremulousness by its form and condition, and by the sap being made to pass up through the pores or tubuli of the plank which was in some particular condition, he says: ‘But, Tom, the generality of mankind is lazy and unthoughtful, and will not trouble themselves to think of the reason of a thing: when they have a brief way of explaining anything that is strange by saying, “The devil’s in it,” what need they trouble their heads about pores, and matters, and motion, figure, and disposition, when the devil and a witch shall solve the phenomena of nature.’

“Gallery of Illustrious Irishmen: Sir Thomas Molyneux,” Dublin University Magazine, September 1841