It is surmised that when people are in a creative state, the cerebral cortex first establishes restful awareness. Creativity exhibits the alpha rhythms of relaxation; subjectively the person feels open and receptive. Unlike other periods of relaxation, this state is on the lookout for something – a stroke of inspiration – and when it occurs a spike of activity is registered by the mind as a moment of “Eureka!”
Famous artists and inventors all testify to this experience, and in their work it can have profound implications. A eureka isn’t ordinary thinking. Truly creative people tend to introduce a question into their minds and then wait for the solution to arrive – hence the necessity of going into a relaxed mode.

Deepak Chopra, How To Know God

Naked Archimedes Hēurēka

I am in the state of having found it!

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Carl Friedrich Gauss

ΕΥΡΗΚΑ! num = Δ + Δ + Δ

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