Cosmical
51Definition of planet — Photograph of the crescent planet Neptune (top) and its moon Triton (center) …
52Alfvén wave — An Alfvén wave, named after Hannes Alfvén, is a type of magnetohydrodynamic wave. Mathematical definition An Alfvén wave in a plasma is a traveling oscillation of the ions and the magnetic field. The ion mass density provides the inertia and the… …
53Magnetic reconnection — is a physical process in highly conducting plasmas in which the magnetic topology is rearranged and magnetic energy is converted to kinetic energy, thermal energy, and particle acceleration. Magnetic reconnection occurs on timescales intermediate …
54Leon Mestel — (born 5 August, 1927) is a British astronomer who has won both the Eddington Medal (1993) and Gold Medal of the Royal Astronomical Society (2002).He was born in Melbourne, Australia, and came to England at the age of three, where he lived in… …
55Astrophysical plasma — An astrophysical plasma is a plasma (an ionized gas) the physical properties of which are studied as part of astrophysics. Much of the baryonic matter of the universe is thought to consist of plasma, a state of matter in which atoms and molecules …
56Croonian Lecture — The Croonian Lectures are prestigious lectureships given at the invitation of the Royal Society and the Royal College of Physicians.[citation needed] Among the papers of William Croone at his death in 1684, was a plan to endow one lectureship at… …
57Dimitrie Gusti — (Romanian pronunciation: [diˈmitri.e ˈgusti]; February 13, 1880 – October 30, 1955) was a Romanian sociologist, ethnologist, historian, and voluntarist philosopher; a professor at the University of Iaşi and the Unive …
58Carl-Gunne Fälthammar — (b. 1931, Markaryd, Sweden) is Professor Emeritus at the Royal Institute of Technology in Stockholm, Sweden, specialising in space and plasma physics in the School of Electrical Engineering. He succeeded Hannes Alfvén as Professor of Plasma… …
59Rede Lecture — The Sir Robert Rede s Lecturer is an annual appointment to give a public lecture, the Sir Robert Rede s Lecture (usually Rede Lecture) at the University of Cambridge. [See [http://janus.lib.cam.ac.uk/db/node.xsp?id=Glossary%2FRede%20Lectures] .… …
60Hindu chronology — The subject of Hindu chronology divides naturally into three parts: the calendar, the eras, and other reckonings. The Calendar The Hindus have had, from very ancient times, the system of lunisolar cycles, made by the combination of solar years,… …
