Bench Grass is a blog about the history of technology by the former student of a student of Lynn White. The main focus is a month-by-month retrospective series, covering the technology news, broadly construed, of seventy years ago, framed by fictional narrators. The author is Erik Lund, an "independent scholar" in Vancouver, British Columbia. Last post will be 24 July 2039.
Friday, October 9, 2026
I Cast Fireball! A Technical Appendix to Postblogging Technology, June 1956
Sunday, October 4, 2026
Postblogging Technology, June 1956, II: Communism Invests, President Pukes
Shaughnessy,
Vancouver,
Canada
Dear Father:
Now back to important career-related activity like fitting a visit to a showroom to see an air conditioner into a Sports Day.
Your Loving Daughter,
Ronnie
Sunday, September 27, 2026
Postblogging Technology, June 1956: The Querulous Old Man And the Central Bank
Shaughnessy,
Vancouver,
Canada
Dear Father:
| "One of the earlier geodesic domes constructed in the United States." Photo credit https://commons.wikimedia.org/wiki/User:Harald-Reportagen, or Kurt Liese (1915--2010) |
Ronnie
Friday, September 18, 2026
The Chairman's Little Helper: A Technical Appendix to Postblogging, May 1956
(If you're wondering over The Engineer, my tentative theory is that it briefly appeared on the Hold shelves during my August trip and has by now been retracted back into the stacks, possibly without notice of same reaching my Library Account, although it is at least as likely that I just didn't register some notification or email. I shall try again.)
I thought about running this last week, but, on the other hand, it's officially a thing when there's two different articles about barbiturates in the same week. The age of Homo medicus! (Which turns out to be some dietician-anthropologist-paleontologist science thing, my apologies to Edward H. Hagen for not searching out some more authentically patronising Fifties label for patients using psychotherapeutics.
Sunday, September 13, 2026
Postblogging Technology, May 1956, II: "A Shabby Little Man"
| Too old to rock and roll. |
Shaughnessy,
Vancouver,
Canada
Dear Father:
Your Loving Daughter,
Ronnie
Sunday, September 6, 2026
Postblogging Technology, May 1956, I: A New Age
Shaughnessy,
Vancouver,
Canada
Dear Father:
Your Loving Daughter,
Ronnie
Sunday, August 30, 2026
The Iron Age Revival of the State XXVIII: some Road Trip Thoughts
Two things seem safe to say here:
i) The Siege of Troy is the most significant historical event of the Mediterranean Iron Age, whenever it occurred, and there is every reason, archaeologically speaking, to think that it happened, to the extent that it happened at all, around 750BC, and that the textual evidence for the traditional "Late Bronze Age Collapse" dating is weaker than is often assumed.
ii) The revitalisation of the downtowns of the small towns of the interior of southern British Columbia is a work in progress closely tied to the problem of the province's indigenous racialised minority, aka "the Indians."
Sunday, August 23, 2026
Summer Road Trip 2026: Apocalypsing Outside
So I’m taking a day in Hope for various reasons not limited to the hellacious wildfire smoke and I’ve ended up sitting down for dinner for one in what I expected to be a quiet restaurant and proved anything but. I’m going to sit out on the deck, which is empty, but my waiter is properly sceptical. It’s apocalypsing outside, you see.
To finish the day I watched the latest episode of Silo and learned that, as of this point the eponymous hole in the ground was built, not against the thread of imminent apocalypse, but rather in a “come at me, bro” spirit of taking on any and all potential apocalypses. We’ll see if that holds up in the show. In the real world it seems pretty assholish.
Look, we used to have a pre-gasoline infrastructure, because we used to not have ICE vehicles. Yes, we blew it up, and there were many more consequences than are visible. (Not enough commutable small town jobs for young people, for one.) But little towns like Princeton (shown here being Princeton, and, yes, that’s approximately the heart of downtown) are doing their best to put it all back together again.
Is it daft? Sure. But every journey of a thousand years starts with taking ownership of being “the bronze sculpture capital of Canada.” We need to be in this together, for the long haul, not hiding in a hole in the ground.
A
Sunday, August 16, 2026
Tinkertoy to Dexion: A Technical Appendix to Postblogging Technology, April 1956
By susiq5555 - ebay #120137669430,
permission granted [1], CC BY-SA 3.0,
"Tinkertoy" is the title because it is what comes to mind when I think about the building sets of my earliest childhood. (Next up are my rich cousins' Lego sets, please don't tell them I called them "rich.") I do not, however, have much of a sense of a Tinkertoy set, as opposed to oddments at the bottom of a toy chest. Tinkertoy Construction Sets are an American product dating to 1914. Their signature feature is the use of wood, which makes it easy to implement wheels and pulleys with child friendly components, but there were lots of wood construction sets. The issue here, it tuns out, is the non-wood one.
The departure point for today's appendix is the use of Dexion components for field repairs of DC3s.
The other inciting even this week is that quaint Danish general strike over the forty hour week. Not only is this sure to lead to a wage-price spiral and inflation, but now Britain's supply of butter and bacon is in trouble! And since there isn't much going on in Denmark to my knowledge except bicycling, which they have to share with the Netherlands, and Lego, we might as well go there. And the ever worthy Meccano, of course.
Sunday, August 9, 2026
Postblogging Technology, April 1956, II: Colonial Inertia
Shaughnessy,
Vancouver,
Canada
Dear Father:
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| A man in a business automation ad. Sign of the times |
Your Loving Daughter,
Ronnie
Sunday, August 2, 2026
Postblogging Technology, April 1956: Mirage Rising
R_., C_.,
Shaughnessy,
Vancouver,Canada
Dear Father:
It is, of course, my fault that I forgot some issues while packing for our trip to Honolulu, but in my defence, they are small and easily missed! Perhaps all the advertorials in the lost numbers of Aviation Week will seep out into the air and into the minds of possible buyers. It's not like anyone would ever read them anyway.
Your son is a great deal more upset at the sudden apparently universal decision that the lesson of Kefauver's win in Minnesota is somehow that the Democrats will suffer for nominating a progressive in '56, unless, for some reason, it is Averill Harriman and not Kefauver specifically. As he points out, farm voters defecting from the GOP isn't a sign that the party needs to nominate the man who looks the most like the President they're defecting from!
On the other hand, it looks like Stevenson is going to win in California and go into the Convention on a winning note. On the other other hand, it will all be over soon, at least for eighteen months or whenever we start worrying about '58, and we can all agree to worry about something else, like WWIII starting in the Middle East.
Your Loving Daughter,
Ronnie
Saturday, July 25, 2026
The Iron Age Revival of the State, XXVII: Towards an Economic History of the Trojan Women
"That the topless towers be burnt/And men recall that face,/Move gently if move you must/In this lonely place./She thinks, part woman, three parts a child,/That nobody looks; her feet/Practice a tinker shuffle,/Picked up on a street./(Like a long-legged fly upon the stream/Her mind moves upon silence."
In spite of a good faith (says I, and would I lie?) effort, I woke up this morning, the last day of my vacation, without the spring numbers of The Economist, Flight, or Aviation Week. (Or Fortune, for what it's worth.) The library informs me that the situation is now remedied for Aviation Week, but it's a bit late to start working on April postblogging at this point! Oh, well. For a change I still have a full week of the month left.
Fortunately, I am still digesting Robert Morrissey, and that Dark Knight guy has a movie out about Helen of Troy and her supporting cast. You might have heard about it. You might have seen Eric Cline dining out over it. You might have heard that the Late Bronze Age Collapse is in the news.
As usual, the Iron Age Revival of the State isn't in the news. Helen wasn't dancing the next morning. It might not be poetry to match widening gyres, but they still say that women's work is never done.
Saturday, July 18, 2026
Gathering the Bones, XXVI: Philadelphia and Conestoga.
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| Conestoga wagon at the National Museum of American History By Daderot - Own work, CC0, https://commons.wikimedia.org/w/index.php?curid=26706952 |
Sunday, July 12, 2026
Gathering the Bones, XXV: Iron, Butchery, And An Ecotone
Sunday, July 5, 2026
Postblogging Technology, March 1956, II: Delta Goes, Nixon Stays
The Lakehouse,
Nakusp, B.C.
Canada
Dear Father:
As March melts into April here in the Bay City, I am bound to work when we are not tittering over the disaster overtaking Richard Nixon, as who doesn't want the worst for jumped-up L.A. parvenues? Do not get me wrong; I am sure that he will be the Vice-Presidential nominee in 1956 and he will probably be the Presidential candidate in 1960, but when Ike --IKE!-- stabs you in the back, what is there even left to say?
Your Loving Daughter,
Ronnie
Sunday, June 28, 2026
The Iron Age Revival of the State, XXVI: The Past Isn't Even Past
Wednesday, June 17, 2026
Postblogging Technology, March 1956, I: Italy Didn't Have Income Tax Until 1973? Seriously?
British Columbia,
Canada
Your Loving Daughter,
Ronnie
Saturday, June 13, 2026
Gathering the Bones XXIV: Ohio or Bust!
California, Pennsylvania, is in the heart of Pennsyltucky, with all that goes with it, mainly closed coal mines. (Wikipedia reports that the local Vigilant Mine once produced the largest lump of coal in the world.) It is, however, the home of Pennsylvania Western University, which is, I am devastated to report, the new name since 2022 of the California University of Pennsylvania. First they renamed the Rough Riders, and now this! At least we still have the Miami University of Ohio, right? (Right.) The United States is just so darned big that these obscure schools can be real things, although clicking through to the Wiki suggests that PennWest is on the bubble these days. Can't imagine why people in Pennsyltucky might be disgruntled about stuff.
Anyway, it's probably called "California" on the basis of a joke about how once you've made the climb out of Brownsville you're practically in California. I don't know that. I made it up, in fact. But now it's a joke on a Blogger page, so real enough for me! Actually it isn't even halfway to Wheeling, West Virginia, where the National Road reaches the Ohio.
Saturday, June 6, 2026
Missile Gap? A Technical Appendix to Postblogging Technology, February 1956
Long time readers will be tired of me bleating about how I was sold a bill of goods in high school about how "we," meaning of course the United States --and, by the way, those Latin American whiners complaining about how "America" has been recently appropriated to mean just the U.S. are 100% correct, to my surprise, but it was the British press that led the pack-- were surprised by the unexpected space technology gap signaled by the shocking surprise of Sputnik. (That was as shocking surprise.) For me, the takeaway point, twenty-four years later, was that it was still necessary for every bright child in a provincial high school to major in the physical sciences if "we" were to have any chance to catch up.
And you will of course heard from me that this is not true, that the satellite launches undertaken for the International Geophysical Year were scheduled years in advance. Sputnik was no more of a surprise than the T-34's appearance on the battlefield, the first Soviet atomic test in 1949, or the defection of Kim Philby, to name three. It turns out that our received history of the Fifties has been sucked of nuance and detail for any number of reasons. In the case of Sputnik, and the missile gap in general, we can even see the explanation. The Eisenhower Administration's attempt to rein in military spending in the 1956-57 fiscal year led to an industry response that was coordinated with congressional Democratic majorities to produce an airpower-centred arms race. (Much to the disappointment of those wanting an infantry-centred arms race.)
But that isn't the limit of my disillusionment. Missile programs might be a silly starting point, but I am, er, beginning to doubt the value of the American experiment.
Sunday, May 31, 2026
Postblogging Technology, February 1956, II: Working Class Atoms
Shaughnessy,
Vancouver,
Canada
Dear Father:
Ronnie
Sunday, May 24, 2026
Postblogging Technology, February 1956, I: The Work of a Dozen Engineers
Shaughnessy,
Vancouver,
Canada
Sunday, May 17, 2026
Supplementary Postblogging: What Did Happen in Late January 1955?
To Whom It May Concern:
On the other hand, now I'm just going to give you a quick rundown of what was in Newsweek, because it's the weekly with the best pictures. (Which will go into the trunks as photographic flimsies bleached of all interest for the future reader, but at least you, the reader of 1956, if any, will see the clipped originals, or, better yet, get your own copy.)
Monday, May 11, 2026
Postblogging Technology, January 1956, I-And-A-Half: A Peaceful Year to Come
Shaughnessy,
Vancouver,
Canada
Dear Father:
I see as I put this in the packet that I have mixed up my notes and sent in the wrong issues. What can I say? It's been a busy week, with a flying trip to L.A. and back. In way of apology, all that I can say is that you're not paying for this, and you're not getting your news from me. I always like to read Uncle George's old letters, especially from the old days, before the war, and I'm always upset when he misses a month (or a year --what was going on in 1931?) and so by extension I am mad at me. There was quite a bit of news at the end of the month, and I will catch you up briefly next week.Your Loving Daughter,
Ronnie
Monday, May 4, 2026
Postblogging Technology, January 1956, I: Why Would You Risk All This Progress With Adlai?
Shaughnessy,
Vancouver,
Canada
Dear Father:
Your Loving Daughter,
Ronnie
Sunday, April 26, 2026
The Fall of Rome, VII: One, Two, Many Irans
Sunday, April 19, 2026
Catseye: A Technical Appendix to Postblogging Technology, December 1955
Wednesday, April 8, 2026
Postblogging Technology, December, 1955, II: Peace On Earth and Sick Presidents. (In 1955!)
Shaughnessy,
Vancouver,
Canada
Dear Father:
Once again I am writing to the man downstairs. It seems a bit silly, but I also feel blue and somber and like somehow marking the occasion of Victor's death, which has hit James even harder than it has me.
Your Loving Daughter,
Ronnie
Saturday, April 4, 2026
Postblogging Technology, December 1955: A Heart-Warming Christmas Time
Shaughnessy,
Vancouver,
Canada
Dear Father:
Your Loving Daughter,
Ronnie
Sunday, March 29, 2026
Minesweeping: A Technical Appendix to Postblogging Technology, November 1955
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| Shiny! |
Friday, March 20, 2026
Gathering the Bones XXIII: The Royal Proclamation of 1763, Manifest Destiny, and The Reality of 19% Grades
Lana Del Rey? I'm so old I remember when "Lana Del Rey" was an ironic comment on "Lana Del Rey." But I guess she decided not to go away, and I'm grateful because that means I can post an original version of the John Denver chestnut:
Almost heaven, West Virginia/
Blue Ridge Mountains, Shenandoah River
Life is old there, older than the trees
Younger than the mountains, growin' like a breeze
The story, as I have it, is that at some vague point in the Eighteenth Century, vast numbers of Scotch-Irish migrated from, you know, Scotland or Ireland or around about there, to the crestline of the Appalachians. For it was at this clear, geographic line that they were barred from going further by the Royal Proclamation of 1763. George III by this action set himself against the westward drive of the American people that is such a large part of its essential nature, a Western drive bound up in the natural progressiveness of the American spirit, about which I can no longer even. The drive naturally soon resumed after the matter of the Revolution was dealt with, but by this time the Scotch-Irish had settled into the "Appalachians," where their Elizabethan accent persists unchanged to this day, denoting the antiquity of their origins and the oldness of their nature, as otherwise indicated by their charming habits of old time country music, square dancing, and making and consuming illegal alcohol products.
Sunday, March 15, 2026
Line Scanning: A Technical Appendix to Postblogging Technology, November 1955
As the electrons travel down the tube, they interact with the RF signal. The electrons are attracted to areas with maximum positive bias and repelled from negative areas. This causes the electrons to bunch up as they are repelled or attracted along the length of the tube, a process known as velocity modulation. This process makes the electron beam take on the same general structure as the original signal; the density of the electrons in the beam matches the relative amplitude of the RF signal in the induction system. The electron current is a function of the details of the gun, and is generally orders of magnitude more powerful than the input RF signal. The result is a signal in the electron beam that is an amplified version of the original RF signal.


























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