In this applet you will be able to visualize the radius of curvature for a parametric space curve ... this information can be very useful in the calculation of maximum g-force experienced by a jet pilot , designing of roller-costers , race tracks to govern the traction of wheels ... etc to mention a few ... it is useful in physical estimations of any general physics involved with space curves and any particle following a specific path...[br][br]This applet was created using Gepgebra 3D calculator app , so it may work on it as best however a better performance can be seen on geogebra classic app on win or linux... happy math :)