February 24, 2015 Physical Science
Absolute zero is the lowest possible temperature in this universe. You can not get lower than absolute zero which is -273.15 Celsius or 0 Kelvin. To understand why this is you first need to know how temperature works. Temperature is…
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February 23, 2015 Physical Science
When I was but a little boy, I remember going to an air show on an Air force base. I never saw a more incredible sight. One thing wandered through my mind though, how could something so big and heavy…
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February 23, 2015 Physical Science
“You are travelling on a highway. You are afraid your car might run out of petrol. You only have a bank note of 500 Rupees in your pocket that you can use for a refill. At the same time, the…
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February 23, 2015 Physical Science
Nuclear radiation can cause significant harm to living beings. It cannot be detected by human senses. Instruments are used to detect radioactive emissions. Geiger counter is one such instrument. Also known as Geiger-Müller counter, this particle detector is used extensively…
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February 23, 2015 Physical Science
Multiple uses abound for infrared radiation technology. Most of its uses have to do with electronics and computers. It is a way to power electrical things without wires and cables. It is an alternate form of wireless communication. Its applications…
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February 23, 2015 Physical Science
Introduction to the dye-sensitized solar cell. As the name suggests, it is a type of solar cell that is “sensitized” by a dye. What does this actually mean? Before further confusion occurs with the emergence of more scientific terms, some simple…
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February 23, 2015 Physical Science
Heat is a form of energy; and like any other form of energy it follows the laws of entropy. This means that heat or thermal energy goes from order to disorder. This change could also be rephrased as going from…
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February 23, 2015 Physical Science
A Geiger counter, also known as Geiger Muller counter, is a detector of nuclear particles that is used for measuring ionizing radiation. A Geiger counter is utilized to detect emitted radiation of gamma rays, X-rays, beta particles and alpha particles….
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February 23, 2015 Physical Science
The “centrifugal” force experienced by an object moving along a curved path is only present in the rotating reference frame of the object. The fact that it does not exist unless you are in the rotating frame is evident from…
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February 23, 2015 Physical Science
The principle of flotation, or buoyancy, was first developed by the Greek scientist Archimedes who lived from 287 to 212 B.C. The buoyant force has been known to humankind for ages. Fish have swim bladders that they can inflate or…
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