Physics
Oil raise up the wick in a lamp. The principle involves

the liquid state of oil
volatility of oil
the diffusion of oil through the wick
capillary action phenomenon

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Physics
The term ''equinox' means

When the day and night are of equal duration
The path which the Earthtakes around the Sun
The axis of the Earth around which it rotates
The time when the Sun seems to be going round and round in the sky in the Arctic but does not go below the horizon

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