We learned not to mix water and electricity when we were children, didn’t we? We listened but never really understood why.   While water does conduct electricity, water by itself is not an conductor. It’s the impurities in water, including minerals, dust,  and other microscopic elements, that we do not normally associate with drinking water, that …

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A safety switch is a device that quickly switches off the electricity supply if an electrical fault is detected, to minimise the risk of electricity-related fires, electric shock, injury or death.  When a person makes direct contact with electricity, it is directed away from its main path in the electrical circuit and instead goes through …

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