Monthly Archives: February 2009

Millikan’s Oil Drop Experiment

Robert Millikan received the Nobel Prize in 1923 for the spectacularly designed ‘oil drop experiment’. A fine mist of oil was sprayed from an atomizer. Most of the droplets get negatively charged as they picked up a small, unknown number of electrons … Continue reading

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Magnetic Aurora

Ladies and Gentlemen Welcome to the greatest free show on earth. Take a look at this (sorry about the music..) These  spectacular images, named after the Roman goddess of dawn are called auroras, both surrounding the north magnetic pole (aurora borealis) and south … Continue reading

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Capacitors

Foe A level physics students only – PHY5 course content Continue reading

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Fossil Fuels

COAL FORMATION Like oil and gas, coal is a fossil FUEL which means it can be burned to generate heat energy. It was formed very slowly, a very long time ago. Once used up, it takes millions of years to … Continue reading

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Acid-Base Titrations

Titrations can be used to find the concentration of an acid or alkali from the relative volumes used and the concentration of one of the two reactants. You should be able to carry out calculations involving neutralisation reactions in aqueous … Continue reading

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Blue Bananas

Bananas look blue in ultraviolet light. The colouring might be due to the breakdown of chlorophyll – the stuff that makes plants look green -as the fruit ripens. Some animals can see in the shorter wavelength UV, so it might … Continue reading

Posted in Bits, Pieces and Fun Stuff | 4 Comments

Conduction- heat transfer in space?

Space is really cold, just over 2.75K, a whisker above absolute zero. Things contract when they get cold and expand when they get hot. Re-entry causes friction between the space shuttle orbiter and the atmosphere and friction produces heat – … Continue reading

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