What is the "rate" of the "passage of time"? How does a physicist define and measure time?
7863
What is time, does it flow, and if so what defines its direction?
58503
Electrons moving faster than light and backward in time?
81212
Is there really time reversibility in physics?
42816
Does entanglement have a speed or is it instantaneous
86791
Time Dilation inside a hollow shell
35663
Is there a formula that gives the position of an object depending on the time, but which doesn't allow the object to surpass the speed of light?
67661
Is there an observable of time?
3024
Why is there a “problem of time” in Quantum Gravity?
16043
A simple pendulum moving at a relativistic speed - how does the period change?
16284
Current measurement maximum time
95561
Gravitational waves and time
147819
How is temperature defined, and measured?
100178
Time, what is it?
51356
Word for a moment in time defined with beginning and end
16486
What is the speed of the Force?
45953
How can I explain the scientific basis of the constant speed of light to a $c$-decay proponent?
72584
Answering about the time