Nov 17, 2025 · Join Physics Forums, where students, scientists, and enthusiasts come together to explore and discuss the current understanding and practice of various scientific fields.

Sep 29, 2025 · Here contains the collection of expert physics articles that deal with physics topics. These span all skill ranges and may include astronomy and cosmology topics.

Jan 26, 2025 · In physics, tensors are often a mixture of several vector spaces and several dual spaces. It also makes sense to sort both kinds as the tensor product isn’t commutative. Definition: A tensor of …

May 11, 2019 · The following formulation in terms of 7 basic rules of quantum mechanics was agreed upon among the science advisors of Physics Forums.

Apr 22, 2010 · Hi, I'm not sure how to word my question, so I will just state it upfront. What is the importance of \\upsilon = \\sqrt{2gh} in physics? I've seen it in escape velocity problems, though with …

Oct 13, 2025 · Physics Forums expert math and physics blog. Read and learn from expert math and science articles, tutorials, and guides. Test your science knowledge with our quiz.

May 27, 2015 · This perfectly legitimate question seems to cause a lot of confusion. So what is energy and how do conversations about what it is go wrong?

Sep 9, 2015 · The Planck length is an extremely small distance constructed from physical constants. Many misconceptions generally overstate its physical significance, stating that it’s the inherent pixel …

Jun 10, 2019 · Superposition plays a crucial role in various areas of physics, including optics, quantum computing, and quantum cryptography, and it is a fundamental concept for understanding the …

Feb 26, 2024 · The Einstein Field Equations (EFE) are a set of ten interrelated differential equations that form the core of Einstein's general theory of relativity. These equations describe how matter and …