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Energy

Renewable Electricity - Hydroelectricity

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Category: Energy
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Hydroelectricity

 

Hydro-electricity is presently the largest contributor to renewable energy worldwide; in Australia and particularly in NSW.

 

Hydro-electricity also is more desirable than wind generation because of a higher capacity factor and ability to produce power on demand.

 

But hydro-electricity is resource constrained as it is difficult to build new dams in the developed countries that are presently heavy fossil fuel consumers.

Dams flood private property and/or National parks and have many self-interested and environmentally concerned opponents.  Hydro-electric schemes interfere with natural river flows and related wildlife, particularly when they involve extensive inundation.  It has become politically very difficult to construct new dams in Australia, even when the potential energy resource is significant. 

Nevertheless in developing countries like China, India and Vietnam there are large hydro-electricity resources that remain unexploited.

 

 

 

 

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Travel

India and Nepal

 

 

Introduction

 

In October 2012 we travelled to Nepal and South India. We had been to North India a couple of years ago and wanted to see more of this fascinating country; that will be the most populous country in the World within the next two decades. 

In many ways India is like a federation of several countries; so different is one region from another. For my commentary on our trip to Northern India in 2009 Read here...

For that matter Nepal could well be part of India as it differs less from some regions of India than do some actual regions of India. 

These regional differences range from climate and ethnicity to economic wellbeing and religious practice. Although poverty, resulting from inadequate education and over-population is commonplace throughout the sub-continent, it is much worse in some regions than in others.

Read more: India and Nepal

Fiction, Recollections & News

Australia in the 1930s

 

 

These recollections are by Ross Smith, written when he was only 86 years old; the same young man who subsequently went to war in New Britain; as related elsewhere on this website [read more...].  We learn about the development of the skills that later saved his life and those of others in his platoon.  We also get a sense of what it was to be poor in pre-war Australia; and the continuity of that experience from the earlier convict and pioneering days from which our Australia grew.                   *

Read more: Australia in the 1930s

Opinions and Philosophy

Science, Magic and Religion

 

(UCLA History 2D Lectures 1 & 2)

 

Professor Courtenay Raia lectures on science and religion as historical phenomena that have evolved over time; starting in pre-history. She goes on to examine the pre-1700 mind-set when science encompassed elements of magic; how Western cosmologies became 'disenchanted'; and how magical traditions have been transformed into modern mysticisms.

The lectures raise a lot of interesting issues.  For example in Lecture 1, dealing with pre-history, it is convincingly argued that 'The Secret', promoted by Oprah, is not a secret at all, but is the natural primitive human belief position: that it is fundamentally an appeal to magic; the primitive 'default' position. 

But magic is suppressed by both religion and science.  So in our modern secular culture traditional magic has itself been transmogrified, magically transformed, into mysticism.

Read more: Science, Magic and Religion

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