JFTDWS
+++ Out of Cheese Error +++
A selection of physics "horizons"
* Absolute horizon, a boundary in spacetime in general relativity inside of which events cannot affect an external observer
* Apparent horizon, a surface defined in general relativity
* Cauchy horizon, a surface found in the study of Cauchy problems
* Celestial horizon, a great circle parallel to the horizon
* Cosmological horizon, a limit of observability: the maximum distance from which particles can have travelled to an observer in the age of the universe
* Event horizon, a boundary in spacetime beyond which events cannot affect the observer
* Killing horizon, a null surface on which there is a Killing vector field
I have competed my cob as "Mycobacterium tuberculosis" before...
* Absolute horizon, a boundary in spacetime in general relativity inside of which events cannot affect an external observer
* Apparent horizon, a surface defined in general relativity
* Cauchy horizon, a surface found in the study of Cauchy problems
* Celestial horizon, a great circle parallel to the horizon
* Cosmological horizon, a limit of observability: the maximum distance from which particles can have travelled to an observer in the age of the universe
* Event horizon, a boundary in spacetime beyond which events cannot affect the observer
* Killing horizon, a null surface on which there is a Killing vector field
I have competed my cob as "Mycobacterium tuberculosis" before...