. 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."

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? **

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!"




