Yes, I do confuzzle even myself, sometimes.
No, I'm not bored.
Yes, I have been in trouble for getting in the way.
Yes, I will soon be in trouble for not helping - you can't win 'em all. ;)
Happy Christmas everyone. :D :D :D
Yes, I do confuzzle even myself, sometimes.
No, I'm not bored.
Yes, I have been in trouble for getting in the way.
Yes, I will soon be in trouble for not helping - you can't win 'em all. ;)
Happy Christmas everyone. :D :D :D
Once upon a time, a long, long time ago, you wore out your shoe leather tramping from shop to shop, and then town to town, in order to find the exact present someone wanted, thereby proving how much you loved them. These days you just order on-line. It's not the same. :(
That aside, I'm, hopefully, entering the final week of my ephemeris project. I've just lose ends to tie up, of which there are lots, look:
Any sense of the beauty of the sunset (like today's melbur delight - I love winter) has been replaced by spaghetti.
Well, my "gear change" is complete. Working Tax Credit was paid into my bank account last Monday, and the paperwork came through at the end of the week. (I didn't dare touch the money until I was in receipt of some written confirmation; they are just are so intent on clawing back the money if they've made an error.)
The other half of the equation is not going well so well. I'm still struggling with my ephemerides. It's getting there, but I've massively underestimated the amount of work. If I was paid by the hour, that wouldn't be a problem. Instead, I dream of the minimum wage... :(
Today's graph is a case in point:
that double-humped, bluey-turquoisey line should be perfectly smooth. It was last Wednesday. But I've introduced some, *ahem*, defects. And the 183 tests probing the code’s internals are all “A-okay”. So I've got to pull everything apart and spend time treading water today.
BTW the turquoise line is the Equation of Time; that’s the difference between the time shown on a sundial and that displayed by a clock or your wrist-watch (assuming you're in Greenwich and your wrist-watch is set to GMT, or equivalent). If the Earth’s orbit was a perfect circle then clocks and sundials would perfectly agree. But the Earth’s orbit is somewhat squashed, and so the day is only on average 24 hours long; it can be thirty seconds longer or shorter. For that reason we set our clocks and watches to Mean Time (like Greenwich Mean Time). The Equation of Time describes the difference between mean and "real" time (solar time).
Practical upshot? Well, not only do the days get longer and shorter during a year, but the "window of daylight" wobbles backwards and forwards about noon. In January, for example, the daylight is moving into the evenings. From the Winter Solstice to the end of January about 15 minutes of the extra evening light are due this shift; for me, that's a quarter of the total gain in evening daylight.
Oh, and December the 25th is one of the days when mean time and solar time agree.Sol Invictus indeed. ;)
UPDATE: I got that bit back on track about 1pm:
And in case I over simplified: the curve is the difference between a sundial and a clock over the course of an entire year; each vertical square is 5 minutes.
On Monday, I went down to the job centre and "signed off". It was a bold move, given I've not got a job. And trivially easy to do: I walked in, signed a bit of paper and went on my way. I walked home thinking the world should seem different. Radically different. But it wasn't.
However things have come together since Monday.
This morning I received writen confirmation I don't have to pay a £100 National Insurance bill hanging over my head. (A pickier person might have found the Revenue's language swinging. But not me.)
I've also received my P45, so it looks like the DWP are going to let my benefit stand, as is, and not try and claim back any "overpayment". They've even given me an extra £100 to keep me going until this:
The last piece of the puzzle is Working Tax Credit, which, despite it's name, isn't a loan, just a benefit for poorly paid working people. Assuming I get it, it should come in around £13 less than my Job Seekers' Allowance - about what I'm making freelancing.
But I will miss the social contact. Maybe I'll sign-on again in time for the Christmas party.
I'm working on some celestial mechanics software at the moment (sunrise and sunset times, dates of eclipses, etc...) and one of the papers I need is in French. Well, I say «French», in reality it's lots of numbers, equations, and mathematical symbols, joined together by English words redendered à la Franglais, with the odd French preposition; to wit:
Le plan x0y du repère de DE200 est, selon les auteurs, dans le plan de l'équateur du FK5-J2000.
(And that's one of the more comprehensible sentences. ;) )
That I can follow the argument leads me to one conclusion: (astro-)physics is its own language.
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