Linked Questions

The possibility of randomness in physics doesnt particularly bother me, but contemplating the possibility that quarks might be made up of something even smaller, just in general, leads me to think ...

In the special theory of relativity, each event is a point in 4d spacetime. And we can represent our life as a world line in the spacetime. Then, if we somehow find out the mathematical equation of ...

Suppose you know at time $t$ that there is some atomic nucleus that radioactively decays. If you were to magically roll back the universe to the exact same state and let it continue as per usual ...

This would mean that every event happens because of what has hapened before it and there is no randomness factor. At a microscopic level, the motion of atoms is a result of the motion of other atoms ...

I am a physics high-school student so my knowledge is not very deep on the subject. We started learnning about quantum mechanics and on some processes that my teacher described as random. I began to ...

Is there a general consensus about whether the universe is deterministic? Is it still up in the air? I have attempted to read other physics.stackexchange answers and do some independent research, but ...

Does Heisenberg’s Uncertainty Principle mean that the universe cannot deterministically be predicted by observers, or does it mean that the universe is inherently indeterministic, meaning that the ...

By truly random I mean that IF we knew the position and velocity of every particle in radioactive isotope, could we predict when the decay would happen?

I often hear people say that quantum randomness is “true randomness”, but I don’t really understand it. Please bear with my question. Before the development of quantum physics, randomness is ...

According to classical physics if we know space-time coordinates of every atom in the universe, we can predict the future. But quantum physics introduced probability throwing determinism out of ...

I am trying to understand what decides the outcome of an experiment and if there is any theory (e.g. non-local hidden variable theory) that is able to predict the outcome.

I am not a physicist but I've started studying the subject and noticed that terms like "random", "randomness", "randomly" are widely used when talking about nature. For example, random movement of ...

In a simulation everything is known which makes any apparent random event a pre-calculated event. Taking that into account is it possible to simulate the universe with absolute accuracy in a way that ...

It is implied, per QM, that the behavior of subatomic particles cannot be precisely predicted. However, these indeterministic effects do have defined probabilities. By the law of large numbers, they ...

Neurons fire depending on the impulses they get from other neurons. This seems to be 'deterministic'. However, sometimes it might be useful to use random processes instead. Does the human brain have ...