한국   대만   중국   일본 
Retarded Time -- from Eric Weisstein's World of Physics
The Wayback Machine - https://web.archive.org/web/20201111231550/https://scienceworld.wolfram.com/physics/RetardedTime.html
Wolfram Researchscienceworld.wolfram.comOther Wolfram Sites
Search Site
Alphabetical Index
About this site
About this site
Astrophysics Electromagnetism Experimental Physics Fluid Mechanics History and Terminology Mechanics Modern Physics Optics States of Matter Thermodynamics Units and Dimensional Analysis Wave Motion About this site FAQ What's new Random entry Contribute Sign the guestbook Email ScienceWorld
Modern Physics > Relativity Theory > Special Relativity v



Retarded Time
    

The time given by


where r is the current position, the original position, and c the speed of light . It is important to use the retarded time in many problems of electromagnetism, since it reflects that fact that it takes time for signals to propagate from the original position to the new one.

Advanced Time