. In mid-January my spouse mentioned that she was happy to have increasing daylight after work, now that we were past the Winter Solstice. Then she said "How come it's still just as dark in the morning, the sunrise time stays the same." Junior scientist that I am I boldly pronounced "No way. Nature is always symmetric." Guess who was wrong?
. The advance of sunset time in December is small, but it steadily increases to about a minute per day by early January.
. About sunrise though, I need to introduce one fact. The Sun's place against the background of stars (pretend it is eclipsed) changes. It moves East the equivalent of 2 minutes of daylight every day due to the motion of the Earth revolving around it. Comparing it to a clock, folklore says the "Sun runs slow." (There are other other uses for that expression, but save that for another time.)
. In the Spring the amount of daylight is increasing rapidly each day, so nobody notices this effect. But in the winter that 2 minutes is signifcant. Whatever advance of sunrise time is gained each day is knocked out in early January by the daily Sun-runs-slow effect, so the gain is added on at day's end and makes sunsets additionally later.
. Nutty as it sounds the earliest sunset around here is on December 9, not on the Solstice! From then on it advances, more and more daily. Also, amazingly, the latest sunrise is not on the Solstice, but on January 4! Then it does start to get earlier by a fraction of a minute, increasing daily. Not until month's end do we finally gain daylight by appreciable changes at both ends of the day. So she was right!
Thursday, January 31, 2008
Sun Time
Sunday, January 20, 2008
Tradition and Skipping Stones
These days the USA enjoys quite an educated population according to a Census Bureau press release. "Last year, 85 percent of adults age 25 and over had completed at least high school, an all-time high, the U.S. Census Bureau reported today. Also in 2003, 27 percent of adults age 25 and over had a college degree, another record."
all this school-learning one might assume that ancient pedagogical methods are now dead, but then one would be dead wrong. Even in the 21st century, in one of the most developed countries in the world, tradition still plays a large part in education for a career. In many cases it is because there is no reasonable substitute, as in medicine, music and the trades. Even candidates for a Ph.D achieve their goal through an apprenticeship.Friday, January 18, 2008
"The Courtesy of a Reply is Requested"
. What ever happened to our general adherence to the dictum "Every legitimate communication deserves the courtesy of a reply"? I cannot figure out any pattern to it. The highly ranked and the low, professionals, businesspeople and students, public officials and private individuals, recipients of compliments or complaints... it seems to make little difference in predicting who will reply and who will not.
. The "History" feature of some email systems has long promoted accountability because one can see if the recipient has opened your message. Apparently that is still not enough motivation for some people who are not at all embarrassed by the fact that you know when you have been ignored.
. Here is one no-cost, high-value improvement we can all make to the general level of cheerfulness of our world and of our workdays. Resolve for the New Year, or at any time of year:
I will reply promptly to all legitimate communications, even if just to say:
"Thank you for your message. I will seek an answer and write back as soon as I have it," or
"Thanks for the suggestion. Your feedback is appreciated."
Wednesday, January 16, 2008
How to retire
.. Today I went to the eye doctor's office for an exam, fully expecting to be fitted for new eyeglasses with an updated prescription.
Imagine that office as a black box with front and back doors doors and no windows, and remember my expectation going in the front door.
** Question: where are my spouse's interests and preferences in this equation? **
** Last question: if my schedule is my own, how will I know when it's time to do something? **Monday, January 7, 2008
Who Are The "Owners of Fun"?
.. Fun is usually understood to mean hilarity or pleasing activity. But we use the word for some serious purposes too, as the absence or suppression of fun has heavy social meaning, which is more clearly demonstrated by the negative: "You took all the fun out of it!" or "Where's the fun in that?" or "Don't spoil their fun!"
with their exhausted and totally dismayed sons who are fighting, screaming and carrying on, keeping everyone else awake. The thru-hiker noted "They were not having any fun on this hike and didn't want anyone else to have it either."
and Eve in a Bible story skit. Fully and properly dressed they nonetheless chose to represent our foreparents' primordial state by taping green paper fig leaves wherever modesty would require. We found this funny yet scandalous and someone remarked "We thought you folks were supposed to be kind of, you know, puritanical." Our director laughed and said "Oh we Baptists have just as much fun as anyone else, except we don't tell anybody about it!"
often seem oblivious to the side effects: loud propulsion noise (and which is a wobbling whine, much more annoying than an outboard motor's rumble), huge wakes, visual distraction, and the danger of collision with paddlers disadvantageously unable to move their canoes or kayaks out of the way quickly. PWCs are claimed to waste about a third of their fuel as a discharge into the water. They have a very shallow draft and so can be run nearly to the shore, which seems to be an additional attraction for their users, either for ha-ha-yuk-yuk juvenility or to show off -- yeeee-haa -- to a captive audience. And don't even think of mentioning to them the endangerment of shorebird nestlings.
jumping into the refreshing coolness of its clear waters. About an hour into this Edenic experience, I saw in the distance what appeared to be a boat heading directly at me at a very high speed. The only likely explanation was that it was a ranger with urgent business, though I couldn't imagine how he might have gotten such a powerful speed boat into the lake, and what his haste could possibly be for, as there were no other people camping, or swimming at this isolated beach, and no paddlers anywhere near. Eventually it resolved into two small boats ejecting huge wakes to either side, continuing on a direct hit line with me.
.. Or maybe not quite. A woman residing on one of those lakes wrote a letter to the editor of the local paper complaining "What's wrong with a little ride in a SeaDoo? It's not fair that those people want to take away our fun." And recently a man deliberately rode his PWC on one of the banned lakes. The warden who stopped him tried to adopt an understanding stance, but the man insisted on being arrested so he could make a test case. The judge agreed with him, at least in cases where a municipality has issued the ban. "The jury is still out" on bans made by state legislature.
