Time

Dear reader,

It’s not coincidence because there are only 28 days available in February, but I really don’t have time to write an elaborate article this month!  😦

Therefore I’m going to write here a very short introduction about … time!    🙂

By the way, do you know how do we define time?  😉

The formal definition (in classical, non-relativist physics) of time implies that it’s a fundamental quantity part of the fundamental structure of the universe – a dimension independent of events, in which events occur in sequence. In other words, its base unit of measurement is the second (symbol: s). Rigorously, a second is defined as “the duration of 9 192 631 770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the cesium 133 atom”. This definition is based on the operation of a cesium atomic clock (the most accurate and reliable time standard in the world):

Cesium Atomic Clock

An opposite definition claims that time is instead part of a fundamental intellectual structure within which humans sequence and compare events. This second view holds that time is neither an event nor a thing, and thus is not itself measurable nor can it be travelled. In other words, time is just the order of events (events don’t happen in a independently existing time):

Time is not absolute, except in some special cases … 🙂

As I wrote before I’m really out of time this month, so …. hey wait a minute! That’s depend on which definition above I believe!  😉

Best Regards from Japan (always ahead of you, unless you live in Australia or New Zealand 🙂 )!