Physics | Definition, Types, Topics, Importance, & Facts | Britannica
2024年11月5日 · physics, science that deals with the structure of matter and the interactions between the fundamental constituents of the observable universe. In the broadest sense, …
Physical science | Definition, History, & Topics | Britannica
Physical science is the study of the inorganic world. That is, it does not study living things. (Those are studied in biological, or life, science.) The four main branches of physical science are …
Physical science - Mechanics, Thermodynamics, Optics | Britannica
Physical science - Mechanics, Thermodynamics, Optics: The battle for Copernicanism was fought in the realm of mechanics as well as astronomy. The Ptolemaic–Aristotelian system stood or …
Quantum mechanics | Definition, Development, & Equations
2024年11月7日 · Quantum mechanics, science dealing with the behavior of matter and light on the atomic and subatomic scale. It attempts to describe and account for the properties of …
Somatotype | Definition & Facts | Britannica
Somatotype, in psychology, the discredited idea that human body shape and physique type are associated with personality traits. The term was used in the system of classification of human …
Force | Definition & Formula | Britannica - Encyclopedia Britannica
2024年10月30日 · Science Physics Matter & Energy Two forces applied simultaneously to the same point have the same effect as a single equivalent force. The resultant force can be found …
Physical chemistry | Definition, Topics, & Facts | Britannica
physical chemistry, branch of chemistry concerned with interactions and transformations of materials. Unlike other branches, it deals with the principles of physics underlying all chemical …
Ectomorph | Description, W.H. Sheldon, & Constitutional …
Ectomorph, a human somatotype tending toward linearity, as determined by the since discredited physique-classification system developed in the 1940s by the American psychologist W.H. …
Physical culture | Exercise, Nutrition, & Wellness | Britannica
In addition to teaching modern languages, science, and vocational subjects, it marked a true renewal of physical culture, with an emphasis on such activities as wrestling, running, riding, …
Mesomorph | Definition, Body Type, & Facts | Britannica
Mesomorph, a human physical type marked by greater than average muscular development, as determined by the since-discredited physique-classification system developed in the 1940s by …