Indiana native. Purdue grad. Programmer / Dev Ops in trade. Dog owner. Husband and father. Have questions? Ask!
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Not your Grandmother's Textbook Exercise

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Sarcasm, where you least expected it.

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RyanAdams
5 days ago
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Central Indiana
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Square root mnemonics

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Here’s a cute little poem:

I wish I knew
The root of two.

O charmed was he
To know root three.

So we now strive
To find root five.

The beginning of each stanza is a mnemonic for the number mentioned in the following line.

√ 2 = 1.414
√ 3 = 1.732
√ 5 = 2.236

I found this in Twenty Years Before the Blackboard by Michael Stueben. Steuben sites the sources as Dictionary of Mnemonics, London 1972. He doesn’t give any other information such as author or editor.

Update: Additional verse from the comments.

It rhymes with heaven
The root of seven.

Update: Here’s Python code to validate the mnemonics above.

    from math import sqrt

    def validate(line, num):
        digits = [str(len(w)) for w in line.split()]
        x = int("".join(digits)) / 1000
        assert(x == round(sqrt(num),3))

    validate("I wish I knew", 2)
    validate("O charmed was he", 3)
    validate("So we now strive", 5)
    validate("It rhymes with heaven", 7)

Related post: Numbers worth memorizing.

The post Square root mnemonics first appeared on John D. Cook.
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RyanAdams
5 days ago
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Central Indiana
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Local toponymic pronunciations in northwestern Ohio and northern Indiana

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Continuing my run through the Midwest, among many others, I have passed through the following towns and counties:  Lima, Cairo, Gomer, Delphos, Van Wert, Warsaw, Kosciusko, Hamlet, Wanatah, and Valparaiso.  These names reflect the variety of ethnicities and origins of the inhabitants.  Several of them are locally pronounced in ways that I had not expected:

Lima is Laima, not Leema (one of my students flew to the capital of Peru that same day I went to its reputed namesake in Ohio).

Cairo OH is Kayro, not Kairo; I don't know for sure how the same name of the southernmost city in Illinois is pronounced locally.

Kosciusko is Kaziasko, not Koskiusko.

Valparaiso is colloquially known as Valpo.

My overall impression is that local pronunciations and appellations are often at considerable variance from the pronunciations for the same places in the standard, national language.  I find that to be an intriguing, thought-provoking phenomenon.

Case in point:  there's a town about five miles from my hometown called Louisville whose residents pronounce the name as Lewisville, not Looeeville

 

Selected readings

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RyanAdams
65 days ago
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Central Indiana
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And on the Twelfth Day of the Seventh Month, Thou Shalt Observe an Amazon Prime Day

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23:14-15 And the Lord spoke to Bezos, saying: On the twelfth day of the month of July, gather all thy Alexa devices and mark them half off so that every household should come to own one. Let Alexa spy on all the people, so that I can take a break from being omnipresent.

23:16 And the Lord continued: Taketh for thy members nesting baskets, odd-shaped string lights, and a cat scratching post in the shape of a pirate ship and present it to them at an irresistible price so they may fill their houses with more junk.

23:17-21 Payeth no heed to the gas prices; go forth with more packages, for the Earth is mine. I plan to destroy it anyway, and I can use thy help with more pollution. Also, placeth extra trucks on the road so that people get stuck in traffic jams. I like messing with people’s plans. Especially when those plans involve trying to make it to the New Kids on the Block Mixtape Tour. For I am the God of the Backstreet Boys.

23:22-23 And the people shall observe this day and make it holy by refraining from all work. Instead, they shall sit by a computer the entire day and hit refresh.

23:24-25 And in the warehouse, thy employees shall work without bathroom breaks to pack and ship an epic amount of shoe rack organizers destined to be ordered on this day. And if they are happy serving you, after seven years, thou mayest pierce their lapels with a service award in the form of a cheap pin.

23:26-28 Thou shalt offer insane deals only to the chosen who have tithed $139 for Prime membership. To those who have ended their memberships because the price went up this year and could not afford it any longer—they are abominations in the sight of the Lord. As punishment, they shall have to pay full price for their Ninja ten-in-one pressure cooker.

23:29 And it shall come to pass that thou shalt mark the Apple Watch at its lowest selling price, and the Canaanites will fight with the Moabites and the Americites to bag the deal before they sell out.

23:30-31 And on the thirteenth day, these Prime deals should continue, much to the behest of Satan. And by Satan, I, your Lord thy God, actually mean small business owners.

23:32 And then thou shalt prepare a Lightning Deal half the price of the previous day’s Lightning Deal so that the people might bang their computers and break them in annoyance, and then thou shalt increase the price for a new computer once these holy days have passed.

23:33 Now the Lord said to Bezos, do not charge shipping, for I am a vengeful God, and I’m mad at UPS for losing my Holy Grail.

23:34-38 And to the people the Lord commanded: Present to me a burnt offering of My Little Ponies, purchased at a steal. Place it upon an altar you make out of logs you chop yourself in the backyard with that ax you bought on impulse. Do not get lazy and use those Duraflame easy-igniting ones you ordered at 2 a.m. for practically nothing. I am your God, for heaven’s sake. And serving me should not be that easy.

23:39-43 Now UPS came forth and said unto God: “Bezos pays us so little for our efforts. Prime Day is going to kill us.” And the Lord said, “Hush.” And UPS said, “Can’t you get a replacement Grail on Amazon for super cheap?” And the Lord said, “Just for being smart with me, I’m commanding Bezos to offer free returns too. And you shall pack them and print the labels and seal the boxes, for days and nights you shall work and be cursed until the end of days.”

23:44 And the Lord appeared once more to Bezos while he was on a yacht in St. Barts and said: This Day of Prime shall be a statute forever in your generations or at least until I decide to bring forth a competitor so big he swallows thou whole like that fish I created to eat Jonah.

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RyanAdams
86 days ago
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Central Indiana
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strip for June / 22 / 2022 - Libraries are Awesome

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strip for June / 22 / 2022 - Libraries are Awesome
Libraries are Awesome

Jump to a Random Strip in the Archives! | Buy This Original Art | Archives | E-mail Dave

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RyanAdams
106 days ago
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Central Indiana
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Watching the Earth move with a Raspberry Pi

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Watching the Earth move with a Raspberry Pi

A few months ago, someone from the Raspberry Shake team got in touch, and asked if I'd like to try out a Shake at my home.

As someone who has spent a bit too much time nerding out over space and atmospheric weather, but never touched seismology, I decided it was time to dig deep and learn a bit more about the Earth.

And learn I did! They sent their simplest model, the Shake 1 RS1D, I placed it on my concrete basement floor, and then waited.

Jeff Geerling May 25, 2022
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RyanAdams
106 days ago
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Central Indiana
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