Recent questions in Theoretical Physics

+20 votes

0 answers

What does it mean when an object is in free fall?

asked Feb 18, 2023 in Theoretical Physics by eddywatson

+211 votes

0 answers

Why do astronomers ar CERN use protons rather than another subatomic particle to probe the structure of the cosmos?

asked Feb 18, 2023 in Theoretical Physics by JP.

+121 votes

0 answers

What is our current understanding of mass?

asked Feb 18, 2023 in Theoretical Physics by Sparkielev

+7 votes

0 answers

Why is gravity considered the weakest of the 4 fundamental forces although it influences everything and cannot be shielded by anything?

asked Feb 18, 2023 in Theoretical Physics by Conor Paterson

+311 votes

0 answers

If the universe wasn't created by a god, an infinite and eternal first cause, is an infinite regress the only possible explanation for the cause of the Big Bang? If X caused the Big Bang, what caused X? If X-1 caused X, what caused X-1?

asked Feb 18, 2023 in Theoretical Physics by Edwardvaughn_5

+25 votes

0 answers

If the number of points on the surface of a sphere is infinite, then why do we recognize only 3 spatial dimensions instead of an infinite number of spatial dimensions?

asked Feb 18, 2023 in Theoretical Physics by moorbathtub

+30 votes

0 answers

What is the disadvantage of theoretical knowledge?

asked Feb 18, 2023 in Theoretical Physics by Don01

+11 votes

0 answers

How many people can be theoretical physicists? How does one become a respected physicist doing fundamental research today?

asked Feb 18, 2023 in Theoretical Physics by paul the builder

+18 votes

0 answers

If the Earth is the 3rd dimension, what is the 2nd and 1st dimension?

asked Feb 18, 2023 in Theoretical Physics by Sandra Osgerby

+2 votes

0 answers

How does multidimensional particle topology impact the concept of spacetime?

asked Feb 17, 2023 in Theoretical Physics by NebulaSeeker

+14 votes

0 answers

What is 'gauge' in physics in layman's terms?

asked Feb 17, 2023 in Theoretical Physics by janezz

+15 votes

0 answers

Virtual particles are described as pairs of antiparticles and particles briefly popping into existence before annihilating each other, but antiparticle-particle collisions release massive amounts of energy, why don't virtual collisions do the same?

asked Feb 17, 2023 in Theoretical Physics by SolarisNova

+13 votes

0 answers

How does loop quantum gravity explain dark energy?

asked Feb 17, 2023 in Theoretical Physics by Peter Allen

+23 votes

0 answers

What if something were to break the laws of physics?

asked Feb 17, 2023 in Theoretical Physics by Tiefa_76

+9 votes

0 answers

Since quantum fields are operator-valued, why do they correspond to particle type instead of operator type?

asked Feb 17, 2023 in Theoretical Physics by Robert Stroud (4.3k points)

+20 votes

0 answers

Why are there 4 fundamental forces in physics but only 1 type of gravity?

asked Feb 17, 2023 in Theoretical Physics by dp

+3 votes

0 answers

What is the Higgs boson, and how does it relate to the standard model of particle physics?

asked Feb 17, 2023 in Theoretical Physics by K89

+135 votes

0 answers

The momentum of one particle within an isolated system is not necessarily conserved, because other particles in the system may be interacting with it. Is it correct or not?

asked Feb 17, 2023 in Theoretical Physics by CrystalCharm (1.7k points)

+49 votes

0 answers

Is there an upper limit to the size of a black hole?

asked Feb 17, 2023 in Theoretical Physics by Starwars1

+10 votes

0 answers

Is heavy reliance on circular logic the secret why theoretical physics always pass the tests of observations or experiments?

asked Feb 17, 2023 in Theoretical Physics by flateric

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