Kinetic theory is a branch of statistical mechanics that describes the behavior of a large number of particles in a gas. It provides a framework for understanding how macroscopic properties of ...

THE difficulty of reconciling line spectra with the kinetic theory of gases, has been referred to by Prof. Fitzgerald (NATURE, January 3, p. 221). The following considerations show that it is ...

This is explained by the kinetic theory of matter. Read more about the states of matter in our study guide about the particle model and heating. The energy stored in the particles in a substance ...

How is matter different from mass? These and other questions about the deepest levels of physics, answered inside.

But because of underlying symmetries in the Universe, matter can be transmuted into energy through a process called annihilation. Quantum field theory holds that particles and antiparticles are ...

Could time itself actually explain our universe's expansion? Our current cosmological model—known as lambda cold dark matter, ...

Topological insulators (TIs) are among the hottest topics in condensed matter physics today. They're a bit strange: Their ...

Dark-matter research spans a very broad range of topics and methods. This makes it a challenging research field to enter and master. Dark Matter: Evidence, Theory and Constraints by David Marsh, David ...

Scientific breakthroughs often stem from the persistent pursuit of understanding complex phenomena. From the nanoscale ...

Because we haven't found anything yet, we've started to wonder if dark matter might be lighter or heavier than we thought. Dark matter can't be too heavy or it might break our best model of the ...