Linked Questions

5 votes
3 answers
48k views

What is a good definition of 'time'? [duplicate]

I know this is a silly question, but I'm only asking this because I honestly can't seem to find a good definition of time that doesn't include another word that relies on the definition (or logical ...
Arturo don Juan's user avatar
0 votes
2 answers
81 views

Is time a mathematical entity or there is any demostration of its existence? [duplicate]

I an having trouble trying to understand time as a physical entity. We can demonstrate the existence of air, the source of infection, electromagnetism, voltage, amperage, among many other physical ...
caranax's user avatar
12 votes
13 answers
9k views

understanding time: Is time simply the rate change?

Is time simply the rate of change? If this is the case and time was created during the big bang would it be the case that the closer you get to the start of the big bang the "slower" things change ...
coder's user avatar
  • 334
10 votes
2 answers
1k views

What really is Spacetime?

What is a good definition on Space, Time and the most specific topic "Spacetime"? Because someone told me that spacetime is the foundation of the entire universe? And also, Is it possible to create ...
Nick1o2's user avatar
  • 211
4 votes
1 answer
1k views

What is the definition of time in General Relativity?

In physics, we have two categories of quantities: Fundamental: These quantities are defined by a rule how to measure them. Non-fundamental: These quantities are (directly or indirectly) defined in ...
emacs drives me nuts's user avatar
-1 votes
2 answers
1k views

Proof that time exists [duplicate]

Is time just an axiom? Or can it be proven to exist? Correct me if I'm wrong, but our whole understanding of the universe is based on directly observing the world and building out axioms that are ...
Anton's user avatar
  • 273
0 votes
3 answers
226 views

Can time be calculated without actually involving any matter?

Humans typically measure time by the change in material things. The movement of hands on a clock. The oscillations of a cesium atom. But can time also be measured by just changes in energy, and in ...
docscience's user avatar
  • 11.7k
1 vote
2 answers
380 views

How can time be a dimension?

In physical terms, dimension refers to the constituent structure of all space and its position in time. Time is same throughout the universe. So, how can time be a dimension?
M.Tarun's user avatar
  • 435
0 votes
2 answers
181 views

Naked Time ( Is there such a thing ?) [closed]

I have lately been concerned with time and whether or not it is an illusion. For argument's sake let's assume it is. Then time should stand on its own. Can anyone describe, (or point me to a paper ...
user33995's user avatar
  • 339
2 votes
0 answers
88 views

What is the definition of time? [duplicate]

I wanted to know the definition of time just like as we define displacement, current etc. **Note:**There should be no mention of time period or time interval in the definition.
axelonet's user avatar
  • 438