Polar definitions: Sec=90°-(6a)°, Min=90°-(a/10)°, Hour=90°-(a/120)°[br]NOTE 1: when using polar coordinates a semicolon is needed [br]NOTE 2: “Alt-o” (letter O, not number 0) gives degree symbol[br]Vectors are used for clock hands.[br]-from wikimedia commons: the clock face background,[br]and set at Layer=0; other graphics are at Layer=1[br]-Animation speed = 0.00023148 to move second hand accurately [br]-ref: Malin Christersson-http://www.malinc.se/math/geogebra/slideren.php

How would you add another hand for timing in fractions of a second?