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Equation 140 · Part 2 · The Clock That Comes Back Wrong by Exactly Its Mass

Symbol c^2

ΔE/c2\Delta E/c^2
c2c^2

What this part means

The square of c: multiply c by itself.

Its job in the formula

c2c^2 is squared: multiply the underlying quantity by itself. The square is a mathematical operation, not a second independent variable.

The passage around this formula

What remains genuinely open, and OBSERVED nowhere yet, is whether the composite-mass instance of this estimator survives contact with a real interferometer once every recoil, laser, and path term the field already knows how to compute is included in full. The thirty-year dispute between Müller, Peters, and Chu on one side and Wolf, Blanchet, Bordé, Reynaud, Salomon, and Cohen-Tannoudji and Sinha and Samuel on the other was not a disagreement about mathematics; both sides agreed on the interferometer phase formula. It was a disagreement about which piece of a correct formula is allowed to be called a measurement of mass. Roura’s and Di Pumpo and collaborators’ answer — a narrow, differential,…

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Learn the underlying idea

An exponent tells how a base is used in multiplication. In x³, x is the base and 3 is the exponent: x³ = x × x × x.

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See this notation across published equations →

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