great circle
Circle on the surface of a sphere whose center coincides with that of the sphere itself. On the globe, the equator is a great circle, while every meridian corresponds to half of a great circle. If you want to move on a spherical surface in ...
graviton
Hypothetical carrier particle in a quantum theory of gravity. However, as of yet physicists have but a rough idea of how a complete theory of quantum gravity will look ...
gravitational waves
Distortions of space geometry that propagate through space with the speed of light, analogous to ripples on the surface of a pond propagating as water waves. For more informations about gravitational waves, please consult the chapter Gravitational waves of ...
gravitational wave detector
Currently, scientists world wide are attempting the direct measurement of gravitational waves reaching us from the depths of space. They are mainly using two types of detectors: interferometric detectors like GEO600 and the LIGO detectors, and resonant ...
gravitational wave astronomy
Discipline of astronomy which aims at using gravitational waves to gain information about cosmic objects or the cosmos as a whole – for instance about what's happening in the core region of a supernova, about neutron star or about the heated past of our ...
gravitational redshift
According to general relativity, light flying away from a massive body (or other source of gravity) experience a redshift - its frequency decreases and the light becomes less energetic. On the other hand, light flying towards a massive body gets blueshifted - ...
