a three-day snowing

12/24/2009, St. Paul, MN

a cloudy morning - see, gravity waves above Minneapolis

12/17/2009, Minneapolis, MN

a cold day

-20C, 12/15/2009 at Minneapolis, MN

recommend Toyota Yaris

Just bought a 2007 Toyato Yaris Hatchback. It is small, but ridiculously has large room even for my mountain bike. It is so efficient, 40MPG for me including local and highway (half and half).

Remodeling at SAFL

Recently, SAFL is remodeling the entrance.
Taken at 10/13/2009 11:16 by Fujifilm FinePix805; Shutter 1/204seconds; F2.83; ISO100; no flash.

front and backyard of my current house

time: 10/18/2009, 17:09
camera: Fujifilm FinePix805
shutter: 1/405 seconds
aperture: F2.83
iso200; no flash

10/10/2009 night MPLS downtown from SAFL

Looking at Minneapolis downtown from St. Anthony Falls Lab.


Time: 10/10/2009, 21:17. Fujifilm FinePix 805 landscape-night mode; Shutter 2seconds; Aperture F2.83; ISO 200, no Flash.

Rainbow on St. Anthony Falls

Leonardo da Vinci's drawing of the vortices shed behind a blunt obstacle

Lenardo da Vinci's observation:
"Observe the motion of the water surface, which resembles that of hair, that has two motions: one due to the weight of the shaft, the other to the shape of the curls; thus, water has eddying motions, one part of which is due to the principal current, the other to the random and reverse motion."