A line of eclectic social science theories and research with its roots in a Soviet theory pioneered by Sergei Rubinstein in the 1930s, seeking to understand human activities as systemic and socially situated phenomena and to go beyond paradigms of reflexology and classical conditioning.

plural of displacement activity

an activity started by the citizens themselves; social movement

plural of activity tracker

A wearable electronic device, or a software application, that monitors and tracks fitness-related metrics such as distance walked, calorie consumption, or heartbeat.

(physics) The differential Raman scattering of left and right circularly polarized light by chiral molecules.

(embryology) A region of mesenchymal connective tissue that carries instructions which direct the developing limb bud to form along the anterior-posterior axis.

(inorganic chemistry) An analytical technique that measures the decay of elements when bombarded with neutrons

plural of zone of polarizing activity

plural of neutron activation analysis