What is the present, how long does it last?

[lemd]

According to relative theory and quantum physics, what is the present moment? How long does it last?

What is the meaning of the present tense that human feel in the sense of quantum/ relative physics? Is that we are seeing the Plank time moment to moment?

 

[phinds]

According to relative theory and quantum physics, what is the present moment? How long does it last?

What is the meaning of the present tense that human feel in the sense of quantum/ relative physics? Is that we are seeing the Plank time moment to moment?

I think "present" is a word in the English language that is not well suited to physics other than to say that it is a "point" in time (having zero duration) just like a "point particle" has no dimensions in space.

As to your question about "... Plank time moment to moment?" I'm not really sure how you mean that. We have no evidence one way or the other as to whether or not time is discrete and if it DOES turn out to be discrete, what the "quantum" of time might be. I've heard discussions saying that it certainly would be much less than one Plank time.

 

[dauto]

discretization of space-time is problematic because it violates Lorentz invariance.

 

[micromass]

According to relative theory and quantum physics, what is the present moment? How long does it last?

What is the meaning of the present tense that human feel in the sense of quantum/ relative physics? Is that we are seeing the Plank time moment to moment?

This is not a question that science attempts to answer. This question currently belongs in the realm of philosophy than actual physics. Thus I'm going to lock this thread.

 

[pmacias]

The concept of the present moment is a complex one and can be interpreted differently depending on the scientific perspective. In terms of relative theory and quantum physics, the present moment can be seen as a constantly evolving and changing state of being. This is due to the idea that time is relative and can be affected by factors such as gravity and velocity. In this sense, the present moment can be seen as a fluid and dynamic state rather than a fixed point in time.

In terms of the duration of the present moment, it is believed to be incredibly short, lasting only for the duration of a Plank time. This is the smallest unit of time in the universe, with a duration of approximately 5.39 x 10^-44 seconds. This means that the present moment is constantly shifting and evolving at an incredibly rapid pace.

It is important to note that the concept of the present moment is not limited to human perception or experience. It is a fundamental aspect of the universe and can be observed and studied through scientific methods. By understanding the nature of the present moment, we can gain a deeper understanding of the fundamental workings of the universe and our place within it.

In summary, the present moment is a constantly changing and evolving state of being that is influenced by relative theory and quantum physics. It is incredibly short in duration, lasting only for a Plank time, and is a fundamental aspect of the universe that can be studied and understood through scientific inquiry.