Author Archives: gmcdavid

Unknown's avatar

About gmcdavid

Retired IT professional with a wide range of interests. Married. Three sons, two with autistic-spectrum disorders and the third being transgender with Ehlers-Danlos syndrome. From Chicago but now living in the Twin Cities metro, Minnesota. Episcopalian. Carleton College (BA 1972, physics) and Stanford University (MS 1974, Applied Physics; MS 1976 Statistics).

My First Peek at Renormalization

I have vaguely known about renormalization since the 1970’s, but had never seriously studied it. Out of curiosity I watched Renormalization and envelopes on YouTube Thursday evening. This was the final lecture of the Asymptotics and perturbation methods course by Prof. Steven Strogatz of Cornell University. I had watched the first two lectures of the course, but none of the others until this one. Fortunately, there were relatively few explicit dependencies on them, so I was able to follow this quite well. Here is the description:

Continue reading

Indo-Hittite

As I mentioned before, I am currently taking a class on the Languages and Writing Systems of Anatolia, focusing on the ancient Hittites and some of their neighbors and successors in the region. These languages have long been recognized as part of the Indo-European language family, but they have common features among themselves which are not shared with the rest of the IE family.

Continue reading

Hittite Iron

I am currently taking a class on the Languages and Writing Systems of Anatolia, focusing on the ancient Hittites and some of their neighbors and successors in the region. One of our readings was Alfonso Archi, “When Did the Hittites Begin to Write in Hittite?” in Pax Hethitica: Studies on the Hittites and their Neighbours in Honour of Itamar Singer. On p. 39 I read:

The words of the Tabarna, the Great King, are of iron. They are not to be thrust aside, not to be thrust aside, not to be broken. He who changes (them) his head will be cut off
Continue reading

Reading Notes: April 2021

  • Lars Celander, How Carriers Fought: Carrier Operations in World War II. “An in-depth analysis of aircraft carrier battles in WWII and the evolution of carrier operations—from technology and strategy to life among the crew.” The book covers US, Japanese, and British carrier use in the war. Very much about the nitty-gritty of how things got done, with a lot of quantitative analysis. “Carriers evolved into ‘eggshells armed with hammers,’ destined for short but interesting lives.” One thing I had not previously appreciated about the 1942 carrier battles in the Pacific (Coral Sea, Midway, Eastern Solomons, and Santa Cruz) was the longer range of the Japanese search planes. Highly recommended for those with an interest in WWII naval and air history.

  • Scott Carpenter, French Like Moi: A Midwesterner in Paris. An American college professor buys a condo in Paris and, though fluent in French, learns how different Parisians and Midwesterners really are, through one story after another. This is one of the funniest books I have ever read. Thank you to my fellow Carleton College (where Scott Carpenter teaches) alumni for suggesting it.

Rang Gaeilge, 27ú lá Mí na mí Aibreáin 2021

Duinnín agus an Bhadhbh

Boladh … smell, scent; Boladh an scéil, hint of the story; Boladh na húire, the smell of earth, a smell presaging death (Ker.); Boladh an tsionnnaigh, “a fox smell,” a peculiar smell said to be hereditary in certain families …

  • Bhí an tAthair Pádraig ag obair ag a bhinse sa Leabharlann Náisiúnta nuair a thug sé foai ndeara go raibh lochán gréine ar an urlár. Ni scáil na gréine, go fírinneach, a dhúisigh óna néal é ach scáil phréacháin a dhubhaigh an ghile ar an urlár le rince beag earraigh a dhein se ar dhíon gloine na leabharlainne. ‘Badhbh!’ arsa an tAthair Pádraig. ‘Leid ón mBé.

    Father Patrick was working at his bench in the National Library when he noticed a pool of sunlight on the floor. It was not the image of the sun, in fact, that woke him from his nap, but the shadow of a crow that darkened the light on the floor with a little spring dance that he performed on the glass roof of the library. ‘War-goddess!’ said Fr. Patrick. ‘A sign from the woman/muse.’

    binsebenchm
    lochánsmall lake, pond
    scáilshadow, shade, darkness, reflection, image
    néalcloud, napm
    préacháncrow, rookm
    dubhaighblacken, darken
    gileWhiteness, brightnessf
    díonroof
    LeidHint, inkling; prompt; pointer, cluef
    Woman; maidenf

  • Léigh tuilleadh

Rang Gaeilge, 23ú lá na Márta 2021

Duinnín agus na Beacha (tuilleadh)

  • Bhí Cáit ag súil go gcaithfeadh sé an oíche ar an settle sa chistin acu siúd ach bhí a chroí rólán chuige. D’éalaigh sé amach bealach an chnoic trí pháirceanna Mholly – thíos uaidh sa ghleann, páistí Cháit ag spraoi … dhá fholt fionn agus folt donn . . . gáire ard caol leanaí. Chuala sé glór Cháit ag insint dó go soilbhir, faoi dhiscréid, go mbeadh a céile, Tom, ag ceannach na talún ó Nóra … soláthar don triúr leanbh … íoc thar thréimhse … iasacht an árthaigh … siúicre san earrach … siopa … bainis . . spanlóir de sprionlóir ar shlí na fírinne … deis a thabhairt don óige … úsc nimhneach ó na ródaideandróin a chur sa siúicre … seans go n-oibreodh sé, seans nach n-oibreodh. Dá n-oihreodh, bheadh feirm Uí Shé le díol / le ceannach – ar phraghas insroichte / réasúnta … thar thréimhse.

    Kate was hoping he would spend the night on the settle they had in the kitchen, but his heart was too full to him. He escaped out the way of the hill through Molly’s fields. Below him in the valley Kate’s children were playing … two blond heads and a brown head … the high thin laugh of children. He heard Kate’s voice telling him clearly, discretely, that her husband, Tom, would be buying the land from Nora … provide for three children … pay over time … lending the container … sugar in spring … shop … wedding … Spindle-legged person of a miser to his eternal reward … giving the youth an opportunity … put poisonous extract from the rhododendrons in the sugar … chance it would work, chance it would not. If it worked, O’Shea’s farm would be for sale/purchase – at an affordable/reasonable price … over time.

    rólántoo full
    foltHair (of head); (pl.) locks, tressesm
    soilbhirPleasant, cheerful; jovial, merry; ready of speech, well-spoken
    discréiddiscretionf
    iasachtLending, borrowing; loanf
    árthach Vessel, ship, boat; containerm gs árthaigh
    bainisweddijng
    spanlóirSpindle-legged person
    sprionlóirMean, miserly, person; miser, skinflintm
    ar shlí na fírinneto his/her/their eternal reward
    deisopportunity [here]f
    úscfat, grease; extractm
    insroichteachtinsroichteacht

  • Léigh tuilleadh

A Copper Mine in Ancient Israel

I wrote in The Archaeology of Armageddon:

The site was occupied almost continuously from about 3500 BCE until about 586 BCE, but a direct connection to King Solomon has yet to be found. What were thought to be Solomon’s stables now seem to date from the reign of Ahab, about 870-850 BCE. Ahab and his father Omri get a terrible press in the Biblical book of 1 Kings, but unlike their predecessors in both Israel and Judah, they are mentioned in contemporary Moabite and Assyrian records. We do not yet have such a verification of the Biblical account for David and Solomon
However, somebody at that time was operating a large copper mine in what is now Israel with fortifications. Continue reading

Rang Gaeilge, 6ú lá na Márta 2021

Duinnín agus na Beacha

Saite, a swarm (of bees, {et cetera})… MacShaithe, a second swarm
cráin beiche, a female bee
máthair áil, mother of a brood, a prolific mother, a queen-bee
céir bheach, bees wax, honey in the comb
fig. what is choice or perfect; c. bheach is péarla na Muimhneach, the choice and pearl of the men of Munster; but (iron.) Tá sé ‘na céir bheach agat

  • Bhí an tAthair Pádraig istigh sa Leabharlann Náisiúnta, falla foclóirí[gpl] thart air, píosaí páipéir le focail luachmhara breactha orthu ag titim ina gconfetti ar an urlár thart air. Taobh leis bhí East Lynne le Mrs. Henry Woods [Diolann Amazon an leabhar sin]. Bhí dhá chairéad, duileasc agus úll leagtha amach go néata ar an leabhar seo. Léifadh sé Mrs. Henry ag am lóin chun a intinn a fhuaradh. Go dtí sin, choinneodh sí na cairéidí amach ón dúch.

    Father Dineen was in the National Library, a wall of dictionaries around him, pieces of paper with valuable words written on them falling like confetti on the floor around him. Beside him was East Lynne by Mrs. Henry Woods. There were two carrots, dulse[a seaweed] and an apple were neatly laid out on this book. He would read Mrs. Henry at lunchtime to cool his mind. Until then, she would keep the carrots out of the ink.

    falla = ballawallm
    luachmharValuable, costly, precious
    breacthaspeckled, dappled; written
    cairéadcarrotm
    duileascdulse[a seaweed]

  • Léigh tuilleadh