The number 240 holds significant meaning across mathematics, electrical engineering, and culture. Mathematically, 240 is an abundant number, a refactorable number, and the sum of the first four powers of three. In electrical engineering, 240 volts represents the standard high-voltage alternating current (AC) supply used in North American residential homes to power heavy-duty appliances like air conditioners, electric ranges, and clothes dryers. In ancient Babylonian mathematics and modern timekeeping, 240 minutes equals four hours, and in computing and gaming, 240 hertz (Hz) serves as an elite refresh rate for high-performance computer monitors.
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