Second (physics)/Related Articles

From Citizendium
Jump to navigation Jump to search
This article is a stub and thus not approved.
Main Article
Related Articles  [?]
Bibliography  [?]
External Links  [?]
Citable Version  [?]
A list of Citizendium articles, and planned articles, about Second (physics).
See also changes related to Second (physics), or pages that link to Second (physics) or to this page or whose text contains "Second (physics)".

Parent topics

  • Time [r]: A fundamental quantity in physics - that what differs always between two inspections of the same system by the same observer. [e]


Other related topics

  • Year [r]: A unit of time measurement that corresponds to one revolution of the earth around the sun, approximately 365¼ days. [e]
  • Month [r]: Unit of time originally corresponding approximately to one cycle of the moon's phases, or about 30 days or 4 weeks. [e]
  • Week [r]: Time unit equal to a number of days, now usually seven calendar days, previously weeks of between 4 and 20 days have been used historically in various places. [e]
  • Day [r]: Defined as 86,400 seconds, using the SI definition of second. [e]
  • Hour [r]: Add brief definition or description
  • Minute [r]: Add brief definition or description
  • Metric units [r]: Obsolete term for a system of units in which the unit of length is the meter, the unit of mass the kilogram, and the unit of time the second. [e]
  • Hertz [r]: The international (SI) unit of frequency, with units of inverse seconds, commonly called cycles per seocond. [e]
  • Frequency [r]: For a periodic (i.e., repeating) phenomena, the number of repetitions per unit of time, usually one second; measured in Hertz [e]
  • Electromagnetic wave [r]: A change, periodic in space and time, of an electric field E(r,t) and a magnetic field B(r,t); a stream of electromagnetic waves, referred to as electromagnetic radiation, can be seen as a stream of massless elementary particles, named photons. [e]
  • Light second [r]: Distance that light travels in vacuum in one second; 2.99792458 * 108m. [e]