from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. An isoline on a map or chart connecting points that have the same value of a quantity that has dimension time.
- n. A semicubical parabola
from The Century Dictionary and Cyclopedia
- n. A line connecting points at which the same events occur simultaneously.
- n. Specifically In hydrol., the line bounding an area of watershed whose river-flow will concentrate in a given time at a central point to form a flood.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. an isogram connecting points at which something occurs or arrives at the same time
Sorry, no etymologies found.
Isochrone Maps in Google Maps - Google Maps Mania links to resources on how to create an isochrone map - i.e., a map that shows travel time from a given point by drawing lines like topographic contours - within the Google Maps environment.
Our proposal also includes observations of six well-studied globular and open star clusters; these observations will serve to calibrate our photometric indices, provide empirical population templates, and transform the theoretical isochrone libraries into the WFC3 filter system.
What we can see is a pretty narrow Doldrums crossing point - visible because of the northwards bulge of the isochrone around the Predicted Route.
I've set the isochrone (the red line running west-to-east) to the afternoon of the 27th, towards the end of the transition zone into the westerly breeze.