Holidays Archives – Page 14 of 19

July 4, 2018July 18, 2018

Pyrotechny Legend and Lore

Parking lot fireworks — Fireworks over an Albuquerque parking lot, photo by Kajmeister

I see fireworks
I see the pageant and pomp and parade
I hear the bells ringing out
I hear the cannons roar
I see Americans, all Americans free
Forever more–
–John Adams, Is Anybody There? from 1776

Bamboo shoots make the best firecrackers. At least, that’s what the Chinese thought, and they ought to know, since they are credited with inventing them. Most folks probably learned the abbreviated history that I did, where Marco Polo brought gunpowder and spaghetti back from China to the Europeans. Not exactly true, since Roger Bacon referenced the gunpowder formula when Polo would have been only about 13. But legends, including those in the U.S., are an important part of the formula. So is China, as one of the most noted artists of our century is a man who paints the sky with gunpowder.

Founder of Crackers

The invention of firecrackers has multiple Chinese stories behind it. One says that folks in the Han Dynasty, (200 BC -200 AD), developed a custom of throwing bamboo stalks into the fire to ward off evil spirits. Since bamboo has hollow air pockets, it pops when it burns, ending with a bang. Continue reading “Pyrotechny Legend and Lore”

March 28, 2018April 16, 2018

A Quartet Convenient but not Required

Vivaldi Spring and cherry blossoms — Spring is the ideal time for Vivaldi, photo & music from Youtube

I had a lovely post on tariffs all mapped out for this week’s essay, but then the sunrise came up pink and the Dailypost word turned out to be “Quartet” and I looked at the daffodils on the kitchen counter, and all I could think about was Spring! Spring! Spring! We’ve sprung into a new season–officially last week in northern California, the northern United States, the northern hemisphere of Terra Firma. Everyone knows there are four of everything that make up the universe: seasons, elements, states of matter, humors, food groups. Is four some sort of natural requirement?

Maybe only Two Seasons. Or, How about Six?

We are humans; we like to divide things. It seems pretty obvious that there would be at least two seasons, since the winter and summer solstice create natural divisions in a calendar. There is a point of time where the days get longer in most of the civilized part of the world, and another point where days get shorter. Western civilization evolved to recognize four separate seasons, with the other two categorizes recognizing the equinoxes, those times when the day and night are roughly equal before transitioning to slightly longer or slightly shorter. Continue reading “A Quartet Convenient but not Required”

March 13, 2018March 20, 2018

Any Old Pi Will Do

Make a joyful noise for today, oh happy day, is Pi Day, 3/14. As you surely know by now, either because you remember some maths or because you don’t live in in the wild, 3.14 are the first few digits of π. And, as we know, Pi are squared. Although, as my 8th grade math teacher Louise Blanchfield told us with a mischievous old-lady I’ve-been-telling-this-joke-for-forty-years grin, “Pi are not squared, Pi are round.” Meanwhile, I am proud to say that the establishment of this august day of celebration first occurred in my neck of woods, a day recognized by Larry Shaw at the San Francisco Exploratorium back in 1988. The rest is a lot of fun history.

Petaluma Pie Company celebrates pi day — Petaluma Pie Company, photo by Karin Kallmaker

Achtung Lieber! It’s a Miracle!

One particularly curious fact about Pi Day is that it also happens to be Albert Einstein’s birthday. He didn’t have anything to say about pi, pier se (see what I did there? that’s not the last pun I am about to inflict on you either)… anyway, Einstein wasn’t a geometer, but he was a brainy guy and did a lot of math. Actually he failed math, which is always used as an example of how you could buckle down and make something of yourself even if you start a failure.

However, I always thought it was a better example of how to successfully buck the establishment, since it’s likely that Einstein failed math because he kept telling the teachers they were wrong. And they were. It’s more like Stephen Hawking crumpling up his physics homework and throwing it in the trash because he didn’t think his proofs were elegant enough. Other students would get them out of the trash so they could understand how to do physics.

RIP Stephen Hawking–who coincidentally passed away yesterday–or maybe it was today since it’s 12 hours ahead in Cambridge. (And you know those smart people always want to be ahead of everybody else.) Stephen and Albert can now argue about the exact shape of the curvature of space-time until infinity or until the end of pi. Maybe they can borrow some of Newton’s apples to use for examples. Continue reading “Any Old Pi Will Do”