Category Archives: Uncategorized

Electric current is generated ‘on demand’. There is no stored electric current in the grid.

Here’s the second article in the series on electric power system stability: The electric current delivered when you turn on a switch is generated from the instant you operate the switch. There is no store of electric current in the … Continue reading

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Electric Power System Stability

I intend to do a few essays about electric power system stability.  I aim to share some concepts about power generation and grids, and in particular how electrical stability is achieved. Some types of generation provide grid stability, other types … Continue reading

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The Decadal Global Climate Bet – Now at the half way mark

Updated to December 2015 (month 60/120): We’re now at the half way mark; and the present decade is still running cooler than the preceding decade. The average temperature anomaly for the previous decade is 0.202 C. The average temperature anomaly … Continue reading

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The Decadal Global Climate Bet – October 2015 Update

Updated to October 2015 (month 58/120): The present decade is still running cooler than the preceding decade. I wonder when we’ll begin to see the heating effect of the big El Nino? There’s not much sign of it yet. More … Continue reading

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The Decadal Global Climate Bet – Dec 2014 update, 4 years into the race

Four years ago, early 2011, a decadal global temperature bet was made. And with all the hype about 2014 being the hottest year, now is a good time to check out progress with ‘the bet’. But first a little background … Continue reading

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A Decadal Global Climate Bet – a second view of the race

About six months ago I posted a short article and a graph attempting to show the progress of a global decadal climate bet.  The graph compared the temperature of the two decades Jan 2001 through Dec 2010 and Jan 2011 … Continue reading

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Earth hour poetry

A friend wrote a poem about earth hour which I thought was worth sharing.  Very succinct.  So with thanks to Mike Smith for allowing me to share ‘By Cripes’ with you: By cripes, these days it’s really quite confusing Trying to decide … Continue reading

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CFLs Contain Mercury. EECA promotes CFLs. IPENZ suggests a mercury label for them. And Germany wants to ban them.

The various approaches to CFLs (compact fluorescent lamps). In New Zealand, March 2011: IPENZ’s (Institution of Professional Engineers) weekly newsletter included an item about its submission to EECA.  It included a mention of the mercury issue.  The last two bullet … Continue reading

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