WebFyzika (z řeckého φυσικός (fysikos): přírodní, ze základu φύσις (fysis): příroda, archaicky též silozpyt) je exaktní vědn ...

WebPhysics is the natural science that studies matter, its fundamental constituents, its motion and behavior through space and time, and the related entities of energy and force. Physics is one of the most fundamental scientific disciplines, with its main goal being to understand how the universe behaves. A scientist who specializes in the field of physics is called a …

WebOverview. The angular momentum J is the sum of an orbital angular momentum L and a spin S.The relationship between orbital angular momentum L, the position operator r and the linear momentum (orbit part) p is = so L's component in the direction of p is zero. Thus, helicity is just the projection of the spin onto the direction of linear momentum.

WebIn fluid dynamics, drag (sometimes called air resistance, a type of friction, or fluid resistance, another type of friction or fluid friction) is a force acting opposite to the relative motion of any object moving with respect to a surrounding fluid. This can exist between two fluid layers (or surfaces) or between a fluid and a solid surface. Unlike other resistive forces, such as dry …

WebAbstract definition. Abstractly, a charge is any generator of a continuous symmetry of the physical system under study. When a physical system has a symmetry of some sort, Noether's theorem implies the existence of a conserved current.The thing that "flows" in the current is the "charge", the charge is the generator of the (local) symmetry group.This …

WebDigital physics is a speculative idea that the universe can be conceived of as a vast, digital computation device, or as the output of a deterministic or probabilistic computer program. The hypothesis that the universe is a digital computer was proposed by Konrad Zuse in his 1969 book Rechnender Raum ("Calculating Space"). The term digital physics was …

WebPlasma was first identified in laboratory by Sir William Crookes.Crookes presented a lecture on what he called "radiant matter" to the British Association for the Advancement of Science, in Sheffield, on Friday, 22 August 1879. Systematic studies of plasma began with the research of Irving Langmuir and his colleagues in the 1920s. Langmuir also introduced …

WebPráce ve fyzikálním smyslu vyjadřuje dráhový účinek působení síly na těleso nebo na silové pole, při kterém dochází k pohybu nebo deformaci tohoto tělesa resp. ke změně rozložení potenciální energie v silovém poli.. Konáním práce (prací jakožto fyzikálním dějem) se uskutečňuje přeměna energie z jednoho druhu na jiný (včetně přenosu z jednoho tělesa …

WebClassical mechanics is a physical theory describing the motion of macroscopic objects, from projectiles to parts of machinery, and astronomical objects, such as spacecraft, planets, stars, and galaxies.For objects governed by classical mechanics, if the present state is known, it is possible to predict how it will move in the future (determinism), and how it has …

WebSoft-body dynamics is a field of computer graphics that focuses on visually realistic physical simulations of the motion and properties of deformable objects (or soft bodies). The applications are mostly in video games and films. Unlike in simulation of rigid bodies, the shape of soft bodies can change, meaning that the relative distance of two points on the …