Sunset view of San Francisco and Oakland from the Berkeley Hills.
Sunset view of San Francisco and Oakland from the Berkeley Hills. Composite of 3 images taken with a Nikon D3x camera and 24 mm f/2.8 PC-E lens (ISO 800, 24 mm, f/5, 0.5 sec). (David J Mathre)
Daily Electric Energy Used (43.5 kWh) from Sense. Daily Solar Electric Energy Produced (18.4 kWh) from Sense and SolSystems. Cloudy. Geothermal HVAC system turned on to heat the house. Forced air dehydrator on to dry end of season hot peppers. A deficit of 25.1 kWh.
Author: David Mathre
I am a scientist by training (Eckerd College, BSc; Caltech, Ph.D.). I worked for 27 years as a Chemist in the Pharmaceutical Industry developing processes to manufacture medicines for human and animal health. I now spend my time as a photographer and world traveler. My interests include the natural world, wildlife, landscapes, sky, and seascapes, travel, and astrophotography. I look for unique ways of viewing the world and presenting my images. I have traveled to over 55 countries in six continents, often on Semester at Sea voyages. While at home in New Jersey, I spend time on home renovation and expansion of a wildflower garden/meadow.
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