Physical Science

Defining bases and skinning cats have one thing in common – they each can be done in more than one way.  Bases are typically defined either by the use of a relative scale, or by their chemical behavior. The most…
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Why does Ice float?  Because God made it that way so it wouldn’t crowd out the little fishes by sinking and filling up the seas, then getting them all frozen.  This was an explanation by a four year old child. …
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Clinical chemistry is defined in layman’s language as the study of the substance in biological fluids most specifically blood,  the methods and principles of determination, the intrinsic and extrinsic precautions, the normal levels and the clinical significance of abnormal values….
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Air refers to the mixture of gases and water vapour which make up the atmosphere of the Earth. Note that this particular balance is specific to Earth – other planets have other atmospheres, and therefore different air. For example, the…
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Science is important for understanding how the physical things in the universe work.  The more we understand science, the better we will be able to use the things we have.  It is also important to note that younger children learn…
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The late Dr. Carl Sagan loved to tell us our bodies are made of star dust. James D. Watson told us that life was just a matter of chemistry, a sequence of naturally occurring chemical reactions building more and more…
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Definitions of acids are abundant, and no single definition is used universally.  Acids are typically defined either by the use of a relative scale, or by their chemical behavior. The most familiar way for most people to recognize an acid…
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Does time have to be non relative to be real? This question is  begged by the title of this article. Einstein believed in relative time, but he could also conceive of both bicycles and cars. They do not mutually exclude…
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Since the 19th century, electro-mechanical relays have been built using different configurations and characteristics to suit different applications. Ever since, relays have been widely used in household appliances, computer interfaces, air and heating conditioning units, automobiles and in many other…
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A lunar eclipse is a wonderful thing to see. When the moon starts to disappear in the night sky, it must have been viewed with awe, and probably some fear by those who didn’t have the benefit of science to…
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