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The Renewable Energy Blog

Archive for November 5th, 2009

by Evans D. Smith

Energy that’s gotten from the wind is many times called windmill energy. This is really because mills are used to supply or to utilize the power. Windmill energy is sort of dynamic and the key word is wind. It’s critical to take a look at how this power is harnessed and the science behind it all. First, let us look at how wind comes about in the 1st place. It is often described as air in motion. We see it all the time particularly when trees and objects start moving. It comes about because of the uneven heating of the earth surface by the sun.

How It Works

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by Christian Goodman

I was recently written to by a client asking if there was a link to hot climates and an elevation in blood pressure. My first thought was, “no,” as an increase in blood pressure among various countries is typically always related to diet and exercise level.

Two recent studies, however, dictated that blood pressure in older patients already suffering from high blood pressure (hypertension) was actually significantly lowered when exposed to hotter climates than normal but only during daytime hours.

In the evenings, however, the systolic number (top number) actually increased significantly. I assumed that this is because the subjects were in air conditioned environments at night. This was not the case so temperature did not seem to play a role.

Patients not suffering from high blood pressure had no affect either way by the higher daytime temperature.

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