Sparks and Flashes
Requirements for flashes range from a bolt of lightning in the sky to a flash that illuminates the scene below. Sparks occur in electrical malfunctions, safe-cutting and across huge terminals in Frankensteinian laboratories.
Because sparks suggest danger they can occasionally be used to imply something menacing. For example, a close-up of an egg in a nest would imply nothing more than an everyday object – benign and wholesome. But if that same egg were to have tiny blue sparks erupting from its shell we would presume it to be evil.
The spark coil
High-voltage spark coils manufactured for laboratory use can be employed for TV and movie effects. These coils produce bright blue sparks across their terminals (as much as 6in ...
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