Anchorage in Winter - Downtown and Biker

I went to a meeting at the train depot today. Here's a shot from the third floor looking south towards downtown Anchorage. The big building on the right is the Hilton Hotel.




With the advent of the mountain bike, the availability of studs for bike tires and bright flashing bike lights, and the increasing price of gas, more and more people are discovering that winter biking is doable. Cold isn't the issue - people are outside skiing and snow machining, so why not biking?

The biggest problem is cars. I'm NOT a biker who goes out in the street if a decent sidewalk exists. Claiming your biker's right to use the road is like Timothy Treadwell playing with grizzlies. The cars might miss you most of the time, but all it takes is one to ruin a perfectly good life. (And if you're contemplating suicide, go biking. Maybe it will change your mind.)

But that said, trips where there is a plowed bike path or sidewalk, of less than a mile, are easy to handle. Then start going further. And you can usually find a bike rack or no parking sign to chain it too. And you can always take a bus back - they have room for two bikes in front.

Did I take my bike today? Nooooooo. I don't have studded tires, so don't go out too far, especially on a tight schedule. But I try to use it when I'm going within a mile or two of home and back rather than the car. I never claimed to be perfect.

My First Music Video - Hunting in Winter

I didn't intend to make a music video. I had some pictures from this afternoon's walk at Campbell Creek near Stuckagain. But music sounded like a good idea. Grrrr. Going to have to learn how to use Garage Band so I can make some noises to put on some of the videos. But in the meantime, what can I use without getting into too much trouble? Something winter related.

I found a CD one of my students, Guo Wei, gave me in Beijing. She was an er hu player in the student traditional Chinese orchestra at Renmin University of China. We even got to hear two of their concerts in beautiful concert halls. So I found a piece from the CD

New Melodies of "Si Zhu"
Collection of Traditional Musical Instruments

Conducted by Qin Pengzhang Yang Chunlin

This is part of track 3 - Sketch of Life in the North - fourth movement - Hunting in Winter

Well, we weren't hunting, but it is north and it is winter.






And then, one thing led to another. The pictures had to have some connection to the music. Let's just say, I learned a lot on iMovie today, and I have a long way to go. I really got into the music and wanted to do the whole piece, but I never would have finished that. It's not finished as it is. I hope you enjoy the pictures of Campbell Creek area and the wonderful music.

This is especially for my musician fellow blogger, Phil; Guo Wei; Frank in Beijing; and Des and Lyrica.

Winter Solstice Yet Again - Thank You Jean Meeus

So, when exactly is the solstice? I felt a little dumb cause I couldn't remember if it was Dec. 21 or 22. Turns out it changes. This year, the solstice was today at 1:07am.

Hermetic Systems Offers a way to calculate the solstice:

To calculate the date and approximate time of the vernal and autumnal equinoxes and of the summer and winter solstices you can use this online calculator. This is based upon the formulas given by Jean Meeus in his Astronomical Algorithms but without corrections for perturbations, so that the times may differ from the true times by up to 20 minutes.

So who is Jean Meeus? Wikipedia says:

Jean Meeus (born 1928) is a Belgian astronomer specializing in celestial mechanics. He is sometimes known as Jan Meeus. The asteroid 2213 Meeus is named after him.

Jean Meeus studied mathematics at the University of Leuven in Belgium, where he received the Degree of Licentiate in 1953 . From then until his retirement in 1993 , he was a meteorologist at Brussels Airport.

His area of interest is spherical and mathematical astronomy.

In 1986 he won the Amateur Achievement Award of the Astronomical Society of the Pacific.

The Willmann Bell Publisher site has this on Meeus' book Astronomical Algorithms:

Meeus, 6.00" by 9.00", 477 pages, hardbound, 2nd Edition published 1999, 2 Lbs. 6 Ozs. ship wt., $29.95..

Errata: 1st Edition
Errata: 2nd Edition

Note: We are currently shipping the June 2005 printing which incorporates all know corrections to that date.

In the field of celestial calculations, Jean Meeus has enjoyed wide acclaim and respect since long before microcomputers and pocket calculators appeared on the market. When he brought out his Astronomical Formulae for Calculators in 1979, it was practically the only book of its genre. It quickly became the "source among sources," even for other writers in the field. Many of them have warmly acknowledged their debt (or should have), citing the unparalleled clarity of his instructions and the rigor of his methods.

Start year and End year specify the range of years you're interested in. Only years in the range -100 CE through 4000 CE can be used with this calculator. (c) 2001-2007 Sunlit Design www.sunlit-design.com Sat, 22 Dec 2007 03:20:22 PM +700 gives UT You can click the publisher link above for the rest of this.



And Sunlit Designs a site for Understanding and Designing Sundials writes:

Jean Meeus has provided a bridge text for dedicated amateurs interested in astronomical and solar event calculations.

Programming the calculations provided by Meeus is possible using any modern programming language. Meeus covers a wide range of astronomical areas.

If your interest is in the motion of the sun, you do not need to program his algorithms yourself ... it has already been done in The Sun API.

Someone named Raoul posted to habitiblezone.com 12/10/2007 9:09:17 AM

A very well known mathematician (I once spent some time at his home) Jean (for John) Meeus calculated when did that happen before and when in the future: 1612, 1615, 1632, 1668, 2007, 2022, 2059, 2078, 2191. [I would think John is for Jean myself]

I mention this only because there is a John F. Meeus who is the Belgian Consul to Liverpool, England. Is this the same man? I don't know how common a name Meeus is and I don't think it is worth it emailing him.

The point of all this is: We can thank, apparently, Jean Meuss for knowing exactly when the solstice is.

Last year I put up some pictures that showed the winter and summer solstices - here's a link to that post