A tag is a keyword or label that categorizes your question with other, similar questions. Using the right tags makes it easier for others to find and answer your question.

Type to find tags:
× 14
an unstable exotic atom bound state consisting of an electron and its anti-particle, a positron. The orbit and energy levels of the two constituent leptons are analogous to, but si…
× 14 × 13
solid materials that contain interconnected pores allowing fluids to pass through.
× 13
To be used for astrophysical jets -- collimated, relativistic outflows often due to accretion onto compact objects.
× 13 × 13 × 13
if you have the bragging rights.
× 13
× 13 × 13 × 13 × 13
The average length that a molecule will travel in a fluid before colliding with another molecule.
× 12
A set of theories that attempt to take the basics of general relativity, and extned it in such a way that it solves various problems. This applies to Milgrom's MOND proposal, but also includes such o…
× 12 × 12
equalities involving the mixed second partial derivatives of thermodynamic potentials.
× 12
× 12 × 12 × 12 × 12
× 12 × 12 × 11 × 11
× 11 × 11 × 11 × 11
Heavy ion collisions involve large atomic nuclei, and are run at modern particle accelerators like RHIC and the LHC.
× 10
× 10
a measure of how much of an object is made of elements besides hydrogen and helium.
× 10 × 10
× 10 × 10
In fluid dynamics, potential flow describes the velocity field as the gradient of a scalar function: the velocity potential.
× 10 × 10