In the regular exhibit area, the downstairs room, there was a new metal sandbox that sloped down and had water running down from a shower head all the way to the bottom of the basin, where it was recycled through the pump back to the top. There were pipes of different sizes and small plastic trees for decoration. You could use the pipes to make tunnels through sand mounds. Joey and I took out all of the pipes and trees and made a meandering river. It wound almost all the way to the bottom, accelerating at the deeper and steeper parts of the river. As a result of changing the depth in one area and increasing height in the other area or decreasing depth caused a change in the velocity of the running water. Once it was done, we added trees to make it look more real.
Thursday, October 29, 2009
Explorit Science Center
A couple of days ago we went to the Explorit Science Center in Davis. They had a new exhibit about communication, featuring Morse code, army flag and hand signals, different languages, and two cans with a string attached. There were also a couple of books for sign language, and a set of stamps for the different hand signals. On a piece of paper, I made a compass rose with a couple of the stamps. On the part with Morse code, there was a chart with all the letters and numbers, Morse telegraph keys, fiber optics, and a small light on either side of the station.