Abstract
Publisher Summary This chapter explains how Einstein's two basic postulates are the foundation of the theory of relativity. The speed of light is constant and does not depend on the relative motion between the source and the observer. Observers who are in relative motion reach different conclusions regarding the time sequence of events taking place at different locations. If an object is in motion in regard to an observer, the length of the object in the direction of motion will be less than the corresponding length of an identical object that is stationary in the observer's reference frame. The chapter discusses the terms, such as “time dilation,” “length contraction,” and “rest mass”. The idea of the principle of equivalence is a basic postulate of the general theory of relativity. General relativity is a geometrical theory of gravitation; in this theory, space and time are merged into a single entity, which is a four-dimensional space-time. The role of mass is important in the general theory. The general theory assumes that a light ray is influenced by a gravitational field and that this effect has been observed in the bending of starlight that passes near the sun.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
