Isochronous

Isochrones (from Greek : ἴσο iso = equal + χρόνος chronos = time ) are lines of the same time or the same occurrence of an event.

Application examples

All places that can be reached from Paris in 3, 6 or 9 hours by train (as of 2006)

One calls isochrones

In geophysics, the connecting lines of all points at which an event (e.g. earthquake wave, tidal wave) can be measured simultaneously, see accessibility map .
In traffic geography, the connecting lines of all places that can be reached from a starting point in the same time.
In radiometric dating methods, the straight lines in an isochronous diagram , the slope of which is a measure of the age of a rock sample.
for planning the emergency services and fire brigades' aid deadlines .

The adjective isochronously in describing technique periodic processes the same duration , that is a constant frequency ; (see also: synchronous )
In clocks , the uniformity of vibrations is called isochronism , i.e. their constant frequency that is independent of external interference.

Commons : Isochrone maps - collection of images, videos and audio files

Wiktionary: Isochrone - explanations of meanings, word origins, synonyms, translations