Alchemy

Mike Keith found this amazing correspondence in 2004. The two 6×6 squares below contain 72 different entries from the periodic table of the elements:

mike keith chemical squares

The two squares are equal in three different ways:

  1. If you spell out the name of each element listed (hydrogen, beryllium, etc.), the square on the left is an anagram of the square on the right.
  2. The sum of the atomic numbers of the 36 elements on the left (2019) equals the sum of those on the right.
  3. If you replace each symbol with its alphabetic score (where A=1, B=2, etc.; e.g. Li = L + I = 12 + 9 = 21), then the sum of the scores on the left (737) equals that of those on the right.

Keith writes, “The next largest pair of triply-equal squares like this would be 7×7 in size, containing a total of 98 different elements, [and] it seems quite unlikely that 98 of them could be so arranged. If this is true then the 6×6 pair presented here is the largest possible (at least for now, until many more new chemical elements have been discovered and named).”

(Mike Keith, “A Magical Pair of 6×6 Chemical Squares,” Word Ways, February 2004.)

| Language · Science & Math

The Green Book

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

During the Jim Crow era, it was difficult and dangerous for African-Americans to travel — they were routinely refused even basic amenities such as food and lodging. Civil rights leader (and now Georgia congressman) John Lewis remembered a family trip in 1951:

There would be no restaurant for us to stop at until we were well out of the South, so we took our restaurant right in the car with us. … Stopping for gas and to use the bathroom took careful planning. Uncle Otis had made this trip before, and he knew which places along the way offered ‘colored’ bathrooms and which were better just to pass on by. Our map was marked and our route was planned that way, by the distances between service stations where it would be safe for us to stop.

Accordingly New York mail carrier Victor H. Green began to publish The Negro Motorist Green Book, a guide “to give the Negro traveler information that will keep him from running into difficulties, embarrassments and to make his trip more enjoyable.” Green paid his readers to contribute reports of road conditions, sites of interest, and information about their travel experiences. Julian Bond later recalled:

You think about the things that most travelers take for granted, or most people today take for granted. If I go to New York City and want a hair cut, it’s pretty easy for me to find a place where that can happen, but it wasn’t easy then. White barbers would not cut black peoples’ hair. White beauty parlors would not take black women as customers — hotels and so on, down the line. You needed the Green Book to tell you where you can go without having doors slammed in your face.

The book was published annually nationwide from 1937 to 1964. The New York Public Library has the full collection.

08/25/2017 UPDATE: Using structured data extracted from the books’ listings, NYPL Labs’ Brian Foo created Navigating the Green Book, an interface that lets you map a trip between two points based on either the 1947 or the 1956 edition. The program looks for a restaurant every 250 miles and lodging every 750 miles. (Thanks, Sara.)

| Society

Outreach

https://www.flickr.com/photos/au_tiger01/2404952640
Image: Flickr

Church signs, collected by Steve and Pam Paulson for Church Signs Across America, 2006:

BE AS GOOD A PERSON AS YOUR PET BELIEVES YOU ARE
THE EASTER BUNNY DIDN’T RISE FROM THE DEAD
BE YOURSELF, EVERYONE ELSE IS TAKEN
DON’T GIVE UP! MOSES WAS ONCE A BASKET CASE
CH CH: WHAT’S MISSING? U R
LIFE IS CHANGE, GROWTH IS OPTIONAL
ETERNITY: SMOKING OR NONSMOKING
GIVE YOUR TROUBLES TO GOD HE’S UP ALL NIGHT ANYWAY
WORRY IS THE DARK ROOM WHERE NEGATIVES DEVELOP
LOOKING FOR A LIFEGUARD? OURS WALKS ON WATER
FIRE PROTECTION POLICY AVAILABLE INSIDE
DON’T WAIT FOR SIX STRONG MEN TO TAKE YOU TO CHURCH!
PRAY UNTIL SOMETHING HAPPENS
WHEN THE LAST TRUMPET SOUNDS WE’RE OUTTA HERE

Also, from Christianity Today: GOD HAS NO FAVORITES BUT THE SIGN GUY DOES GO BLACKHAWKS

| Humor · Religion

Welcome Wagon

https://commons.wikimedia.org/wiki/File:Bundesarchiv_Bild_101I-127-0391-21,_Im_Westen,_deutsche_Soldaten_mit_getarnter_Pak_Recolored.png
Image: Wikimedia Commons

In 1941, the German infantry found that its 3.7 cm Pak 36 anti-tank gun was practically useless against Soviet T-34 tanks — the Pak could only announce its presence by bouncing rounds harmlessly off the tank’s rugged armor.

Accordingly the Germans nicknamed it Heeresanklopfgerät — literally, “army door-knocking device.”

| History

Incognito

What three digits are represented by X, Y, and Z in this addition problem?

incognito

Click for Answer
| Puzzles

An Architect’s Dream

ambasz folly 1

This is just an image that I liked. In 1983, in preparation for an exhibition at New York’s Leo Castelli Gallery, architect B.J. Archer invited some of his friends to submit plans for a folly — “an object which embodies no function, save for demarcation, or is useful only for a small segment of daily life.”

Emilio Ambasz submitted the following. “I never thought about it in words,” he wrote, “It came to me as an image — full-fledged, clear and irreducible, like a vision”:

I fancied myself the owner of a wide grazing field, somewhere in the fertile plains of Texas or in the province of Buenos Aires. In the middle of this field was a partly sunken open-air construction. I felt as if this place had always existed. The entrance was marked by a three-column baldachino supporting a lemon tree. From the entrance a triangular earthen plane stepped gently toward the diagonal of a large, square sunken courtyard — half earth, half water. A rocky mass rose in the centre of the courtyard resembling a mountain. A barge made of logs floated on the water; it was sheltered by a thatched roof supported by wooded trusses resting on four square, sectioned, wood pillars. Using a long pole, the barge could be sculled into an opening in the mountain. Once inside this cave I could alight the barge on a cove-like shore illuminated by the zenithal opening. More often, I used the barge to reach an L-shaped cloister where, shaded from the sun or sheltered from the wind, I could sit and read, draw or just think. The cloister was defined on the outside by the water basin and on the inside by a number of undulating planes screening alcove-like spaces.

ambasz folly 2

In the alcoves he stored childhood toys, school notebooks, a stamp collection, and an old military uniform. “Not all things stored in these alcoves were there because they had given me pleasure; they were things I could not discard.” In his imagination he would traverse the water basin occasionally to dress up in the uniform, “assuring myself I had not put on too much weight.”

One last thing: In place of one of the alcoves was the entrance to a tunnel leading to an open pit full of fresh mist. “I never understood how this cold water mist originated, but it never failed to produce a rainbow.”

ambasz folly 3

(From Archer’s Follies, 1983.)

| Art

Light Work

You have 10 stacks of silver dollars, with 10 coins in each stack. The coins appear identical, but you know that all the coins in one stack are counterfeit. You know the weight of a genuine coin, and you know that a counterfeit coin weighs 1 gram less than this. How many weighings must you do to find the counterfeit stack?

Click for Answer
| Puzzles

Marital Duels

marital duels

In the Middle Ages, husbands and wives would sometimes settle their differences with physical combat. To compensate for the man’s greater strength, his wife was given certain advantages:

The woman must be so prepared that a sleeve of her chemise extend a small ell beyond her hand like a little sack. There indeed is put a stone weighing three pounds; and she has nothing else but her chemise, and that is bound together between the legs with a lace. Then the man makes himself ready in the pit over against his wife. He is buried therein up to the girdle, and one hand is bound at the elbow to the side.

In other drawings the man sits in a tub; in one the two fight with drawn swords. “Judicial duels were common enough in the medieval and early modern period to merit etiquette books,” writes scholar Allison Coudert, “but, as far as I know, nowhere except in the Holy Roman Empire were judicial duels ever considered fitting means to settle marital disputes, and no record of such a duel has been found after 1200, at which time a couple is reported to have fought with the sanction of the civic authorities at Bâle.” The drawings that have survived come from historical treatises of the 15th and 16th centuries.

(Allison Coudert, “Judicial Duels Between Husbands and Wives,” Notes in the History of Art 4:4 [Summer 1985], 27-30.)

| History · Society

I Got a Feeling

My teenage children are mad about rock ‘n’ roll. I don’t mind, but between them they have socks, pullovers and slacks which are fluorescent, and I am worried in case these are harmful to their health. Surely things that are luminous in the dark are usually radioactive, which, I take it, could be dangerous.

You’ll be relieved to know that these clothes, so popular with teenagers (particularly the rock ‘n’ rollers), have been tested for radioactivity, and there is none. So there should be no danger at all, except to anyone who is sensitive to the kinds of colours they select!

— Woman’s Realm, April 12, 1958

| Entertainment · Oddities