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Space physics, also known as space plasma physics, is the study of naturally occurring plasmas within Earth's upper atmosphere and the rest of the Solar System. It includes the topics of aeronomy, aurorae, planetary ionospheres and magnetospheres, radiation belts, and space weather (collectively known as solar-terrestrial physics [1] ).
Miniaturization (publ. 1961) included Feynman's lecture as its final chapter. " There's Plenty of Room at the Bottom: An Invitation to Enter a New Field of Physics " was a lecture given by physicist Richard Feynman at the annual American Physical Society meeting at Caltech on December 29, 1959. [1] Feynman considered the possibility of direct ...
O'Neill cylinder. An O'Neill cylinder (also called an O'Neill colony) is a space settlement concept proposed by American physicist Gerard K. O'Neill in his 1976 book The High Frontier: Human Colonies in Space. [1] O'Neill proposed the colonization of space for the 21st century, using materials extracted from the Moon and later from asteroids.
In fluid dynamics, gravity waves are waves generated in a fluid medium or at the interface between two media when the force of gravity or buoyancy tries to restore equilibrium. An example of such an interface is that between the atmosphere and the ocean, which gives rise to wind waves . A gravity wave results when fluid is displaced from a ...
Quantum foam or spacetime foam is a theoretical quantum fluctuation of spacetime on very small scales due to quantum mechanics. The theory predicts that at these small scales, particles of matter and antimatter are constantly created and destroyed. These subatomic objects are called virtual particles. [1] The idea was devised by John Wheeler in ...
Computer simulation of the Earth's magnetic field in a period of normal polarity between reversals [2] Geophysics ( / ˌdʒiːoʊˈfɪzɪks /) is a subject of natural science concerned with the physical processes and physical properties of the Earth and its surrounding space environment, and the use of quantitative methods for their analysis.
Physics is the natural science of matter, involving the study of 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.
On Earth, when looking at a sea from a shore, the part of the sea closest to the horizon is called the offing. The true horizon surrounds the observer and it is typically assumed to be a circle, drawn on the surface of a perfectly spherical model of the relevant celestial body, i.e., a small circle of the local osculating sphere.