Physical Science

In a period of less than one hundred years, humankind advanced from traveling by horse and buggy to making a trip to its planet’s satellite. Just imagine what the humans might be able to accomplish over the course of the…
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The first fact most students learn about electricity and magnetism is that there exists a physical property known as charge, which can be positive or negative. Two particles of like charge repel one another, and two particles with opposite charges…
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When I was young, time stretched on before and forty-year-olds were, I believed, on the edge of extinction. Now, as a seventy-five year old, I measure forward time in decades and more and backward time as an instant. How could…
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Snow machines, which utilize various means in order to produce frozen precipitate similar to real snow, range in complexity from a simple two part assembly to a vast assembly run by computers. All snow machines regardless of design require two…
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Is time a dimension the way the three dimensions of space are? Are the past and the future places we could travel to if we had the technical means of getting there? I don’t believe so. I believe all we…
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Does time exist as anything other than our measure of it?   Could there ever have been a “fifteen  minutes before the Big Bang?” Time exists as something relative to our perception and movement.  For events to have any kind of…
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Heat is a form of energy associated with temperature and is more correctly termed thermal energy. In fact the term heat is used to describe the transfer of thermal energy from one substance to another. For example, the end product…
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Most of us attach little or no importance to the name Robert Hooke when used in conjunction with Sir Isaac Newton. The reason is quite simple; it is a name that invites controversy. These two gentlemen, besides the fact that…
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Two basic principles guide the Search for Extra-terrestrial Intelligence (SETI) and the debate about whether we are truly alone in the universe. The first, the Drake equation, is generally an optimistic calculation that there should be numerous alien civilizations alongside…
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Renewable energy comes in many forms including solar, geothermal, wind and hydroelectric. Renewable energy is energy is energy generated from natural resources, and is better for the environment, cost effective and more energy efficient than most of the energy being…
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