danaleeling

Heavy morning rain knocked out Kacifica satellite connectivity for the campus. I ran a hotspot off of my phone to connect my laptop to the Internet and then used my HDMI cable to display the morning Limits of Light video on the computer laboratory smartboard. This worked, with some loading stalls. The students on this campus are accustomed to video loading stalls that come with rainy days.  I did not have access to a microscope, so I attempted to resolve the phosphors on the Smartboard using the macro camera on my phone. That failed, although one can see that there is an underlying structure to the image. Elise After the video I had the students view the visible spectrum using a CD spectrograph. In experimenting here, I found that I could deliver a spectrum off of the top half of the CD disk while blocking the direct reflection of the opening with a piece of sandpaper. This worked surprisingly well. As usual, the camera sensor does not produce the smoothly changing colors seen by ...

On Tuesday morning in physical science class I covered the concepts of and relationships between current, voltage, resistance, power, and energy. I also showed how one can calculate the per hour cost of an appliance using the utility rate in kilowatt-hours and the power consumed by the appliance. On Wednesday the class visited the Kosrae Utility Authority. The class wishes to thank General Manager Fred Skilling for permitting and hosting the visit by the class. Thanks are due to Casey Freddy, Gerry Protacio, and Robert Taualupe for their excellent presentations and tour. Thanks also to the support team at KUA who set up refreshments for the class. The visit was both educational and wonderful! The class in front of one of the two 600 kW 13800 V high speed generators, all wearing hearing protection. Tuesday I covered some of the basic terminology and Ohm's law. The lecture included coverage of how to calculate the cost for appliances. The class also toured campus making calculations ...