The Cathode Ray Oscilloscope
Introduction The following should give the student some familiarisation with the function and uses of the cathode ray oscilloscope (C.R.O.). Consider a s…
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Does water swirl counter-clockwise in the Southern Hemisphere?
Answer:Yes and no. When applied to toilets and sinks, this is one of those “too good to be true” science factoids, I’m afraid. But it does apply in some situa…
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Transformer and Hysteresis
Transformer Hysteresis Losses are caused because of the friction of the molecules against the flow of the magnetic lines of force required to magnetise th…
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Frogs Levitate in Strong Magnetic Field
Some things like iron nails are known for their magnetic properties, but why should frogs levitate in a magnetic field? The trick is to get the magnetic field…
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Have you ever been on a train going through a tunnel or a plane and your ears pop? Why does this happen?
A: Inside your ear there is a pocket of air. This pocket is normally at the same pressure as the air outside your ear to help you hear, but if the air pressur…
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