Time is subjective

Time passes differently in our mind. When we get a fright, large amounts of adrenaline released in our brain would speed up our internal clock and cause us to experience life as moving slowly.

The biggest factor influencing your time perception is attention. The more attention you give to the passage of time, the slower time seems to go. If you are distracted by something interesting, you're more likely to lose track of time.

If one looks at reality on the smallest scale, using equations of quantum gravity, time vanishes. However, we still perceive time as moving forward sequentially.

Key aspects of time are described by the second law of thermodynamics, which states that heat always passes fro...