The watt ( /ˈwɒt/ WOT; symbol: W) is a derived unit of power in the International System of Units (SI), named after the Scottish engineer James Watt (1736–1819). The unit, defined as one joule per second, measures the rate of energy conversion or transfer.

) is the SI derived unit of electrical resistance.

The watt is named after the Scottish scientist James Watt for his contributions to the development of the steam engine. The unit was recognized by the Second Congress of the British Association for the Advancement of Science in 1882. The 11th General Conference on Weights and Measures in 1960 adopted it for the measurement of power into the International System of Units (SI).

The femtowatt is equal to one quadrillionth (10⁻¹⁵) of a watt. Technologically important powers that are measured in femtowatts are typically found in reference(s) to radio and radar receivers. For example, meaningful FM tuner performance figures for sensitivity, quieting and signal-to-noise require that the RF energy applied to the antenna input be specified. These input levels are often stated in dBf (decibels referenced to 1 femtowatt). This is 0.2739 microvolt across a 75 ohm load or 0.5477 microvolt across a 300 ohm load; the specification takes into account the RF input impedance of the tuner.

Mount Shasta (Úytaahkoo in Karuk or "White Mountain": the origin of the name "Shasta" is vague, perhaps from Russian (Чистая, means "white, clean, pure" or Счастье, means "happiness, luck, fortune, felicity") from the early Russian settlers in California) is located at the southern end of the Cascade Range in Siskiyou County, California and at 14,179 feet (4,322 m) is the second highest peak in the Cascades and the fifth highest in California. Mount Shasta has an estimated volume of 85 cubic miles (350 km³) which makes it the most voluminous stratovolcano in the Cascade Volcanic Arc.

The mountain and its surrounding area are managed by the U.S. Forest Service, Shasta-Trinity National Forest.

Mount Shasta is not connected to any nearby mountain and dominates the northern California landscape. It rises abruptly and stands nearly 10,000 ft (3,000 m) above the surrounding terrain. On a clear day, Mount Shasta can be seen from about 150 miles (240 km) away. The mountain has attracted the attention of poets, authors, and presidents. Mount Shasta was described by the poet Joaquin Miller: