Author Archives: Dennis SILVERMAN

About Dennis SILVERMAN

I am a retired Professor of Physics and Astronomy at U C Irvine. For a decade I have been active in learning about energy and the environment, and in lecturing and attending classes at the Osher Lifelong Learning Institute (OLLI) at UC Irvine.

In Philadelphia Train Crash, Energy and Centripetal Force 4.5 Times That for Speed Limit

In coverage of the tragic Philadelphia train crash, the news and public are amazed that the train’s speed is over twice of the limit for the curve being rounded.  The speed was 106 mph, and the speed limit was 50 … Continue reading

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Building Partnerships for Ocean Health in Southern California

Building Partnerships for Ocean Health in Southern California is a conference in the “Toward a Sustainable 21st Century Series”, presented May 8, 2015, at the Beckman Center for the National Academies, at UC Irvine. Morning Session:  Our Changing Ocean Unfortunately, … Continue reading

Posted in California Water, Climate Change, Oil, Sea Level Rise, UC Irvine | Leave a comment

Fixing the Cloud Problem in Climate Change Models, a Talk by Michael Pritchard

This is a brief summary of a talk by Prof. Michael Pritchard, Department of Earth System Science in the Physical Sciences  Breakfast Lecture Series of the School of Physical Sciences, on May 5, 2015. Michael Pritchard was introduced by Dean … Continue reading

Posted in Climate Change, Solar Energy | Leave a comment

Talk by UC Irvine Chancellor Howard Gilman to the Retirees Association

This is a partial account of UCI Chancellor Howard Gilman’s talk to the Retirees Association on May 5, 2015. (My low speed of taking notes on the iPhone allow me to present only some of the numbers that he stated, … Continue reading

Posted in UC Irvine, University Funding | Leave a comment

California’s Four Year Drought

Here are graphs that show the extent of California’s four year drought. California Snowpack We start with the snowpack which is essential to supply water as it melts over the summer.   You can see that in 2012 and 2013 … Continue reading

Posted in California Water, Climate Change, Irvine Water | Leave a comment

California Hydropower Has Dropped 60% in the Last Four Years

California hydro-power has dropped enormously because of the drought.  The lower water levels put less pressure at the intakes to the turbines, and they generate less power.  At some minimal lake height, they wobble so much that they cannot operate. … Continue reading

Posted in California Power Mixes, California Water, Electric Power, Hydropower, Renewable Energy | Leave a comment

IRWD Irvine Ranch Water District Sources, Use Reduction, and Rates

  Irvine Ranch Water District Water Sources in 2013: 22% Imported from State Water Project and Colorado River Aqueduct 31% Clear Ground Water (GW) 25% Recycled Water 19% Treated GW which is used in grounds and buildings In 2015, IRWD … Continue reading

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Orange County Water Agencies Restrictions for February 2016

From the OC Register, we have copied for inclusion with the set of articles, the new targets for Orange County water agencies to be in force by the end of February 2016. New targets for O.C. water districts Supplier Name … Continue reading

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California Water Projects Feeding Southern California

Map of California Water Projects   The California State Water Project (SWP) This section is taken from the Wikipedia article on the CSWP or SWP, but specialized to the path of the water to Southern California. The SWP has 5.75 … Continue reading

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Gary Oberts talk to OLLI on the Irvine Ranch Water District Water Sources

Our water expert, Gary Oberts, gave a talk to the Osher Lifelong Learning Institute (OLLI) associated with UC Irvine.  His talk was on the Irvine Ranch Water District of Irvine, California, and its water sources and policies during the current … Continue reading

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