Has the charge of the electron or the speed of light altered over time, or has some combination of effects occurred?

ECONOMIST: Fundamental physics

His main characters include G, the strength of gravity, h, Planck's constant, which governs the quantum nature of reality at small scales, e, the charge of the electron, and c, the speed of light itself.

ECONOMIST: Modern physics

The physicist Robert Millikan (who showed minor confirmation bias in his own work on the charge of the electron by omitting outlying observations that did not fit his hypothesis) devoted more than 10 years to trying to disprove Einstein's theory that light consists of particles (photons).

WSJ: The Benefits of Scientific Rivalry | Mind & Matter

Since the charge comes in small multiples of the charge on an electron, it is easy to account for.

ECONOMIST: This year, the Nobel authorities have shown a deft touch