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The photo-electric effect is the way in which electrons are released from the surface of a metal when there is an incident light ray. The particle model of light, as part of wave-particle duality, suggest...

Whilst for some medical schools work experience is not mandatory, for the majority, it is highly recommended. Gaining work experience in a healthcare profession is not only valuable in ensuring that medic...

Following an introduction that sets out your argument and the context that will support it, each paragraph of your essay should include a topic sentence (which outlines the argument you will make in the p...

electrostatic forces between oppositely charged ions.

The dead or inactive form of the pathogen stimulates the adaptive immune system. It forces white blood cells to form antibodies against the pathogen, so that if a future invasion by the same pathogen was ...