As Clocks Get More Precise, Time Gets More Fuzzy
There are a lot of comments here, some by people more knowledgeable than I.  Let me just say that, by my understanding, just as there&#x27;s a quantum uncertainty principle linking position and momentum, so there is a similar (or equivalent) quantum uncertainty principle linking energy with time[0].  The more accurately you know when something happens, the less certain you can be about how much energy is involved, and <i>vice versa.</i><p>This is why the quantum vacuum is filled with particles, and why the Casimir effect[1] works.<p>[0] <a href="http:&#x2F;&#x2F;math.ucr.edu&#x2F;home&#x2F;baez&#x2F;uncertainty.html" rel="nofollow">http:&#x2F;&#x2F;math.ucr.edu&#x2F;home&#x2F;baez&#x2F;uncertainty.html</a><p>[1] <a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Casimir_effect" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Casimir_effect</a>