= Bertozzi's electron speed-energy experiment
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<William Bertozzi> compared <electron> time-of-flight speeds with independently measured kinetic energies using electrostatic and linear acceleration. The 1964 report covers 0.5–15 MeV and uses calorimetry to check deposited <energy>. Speed approaches the light-speed limit while <energy> continues rising, testing relativistic <energy> against an unrestricted Newtonian extrapolation.<Speed and Kinetic Energy of Relativistic Electrons by William Bertozzi>[1964 abstract and experimental procedure]{ref}
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