Units of measurement
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Electronvolt (eV)
British Thermal Unit (BTU)
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Electronvolt (eV)
Electron Volt (eV) — a unit of energy used in atomic and nuclear physics, equal to 1.602 × 10⁻¹⁹ joules.
British Thermal Unit (BTU)
British Thermal Unit (BTU) — a unit of energy used in the US and UK, approximately equal to 1055 joules.