Uncertainty relation of energy and time is different

Thank you very much on the clarifications you give in this article. It enfuriates me how the beauty of quantum physics is raped by those esoterics.

One little note however: the nature of the particle-momentum and energy-time uncertainties are very different. The first really is “Heisenberg principle”, while the latter is not. You can see this from the fact that “time” is not an observable in quantum mechanics, and Heisenbergs uncertainty principle only applies to a pair of “canonically conjugate operators”. The energy-time uncertainty is related to the fact that in order to measure small energies, we need to measure over a certain extent of time and therefore is not directly related to quantum mechanical uncertainty.