The part of any equipment which requires advanced knowledge of physics to design; especially the core nuclear components of a nuclear weapon

(physics, atomic) The branch of physics that studies the internal structure of atomic nuclei.

(obsolete) sociology

(physics, atomic) Synonym of atomic physics

(computer graphics, video games) Physics based around ragdolls (models consisting of a set of connected rigid bodies that can collapse in a loose, natural manner).

(derogatory) The tendency of academics in non-scientific subjects to introduce jargon and mathematics to make their work appear more rigorous.

As distinguished from classical physics, all physics discoveries made since approximately 1900, including relativity and quantum mechanics.

The sub-discipline of soil science that studies the physical properties of the soil, with particular emphasis on soil moisture potential, water movement and solute transport.

(physics) the description of natural phenomena in mathematical form, especially in order to derive fundamental laws of nature and to derive conclusions from these laws

(chemistry, physics) The science that studies chemical processes and phenomena from the point of view of physics.