gdc-3
DESCRIPTION
GDCTRANSCRIPT
-
8Physical examples of scalar fields:
Electric potential around a
charge
Temperature near a
heated wall
+
(The darker region representing higher values )
-
9The flow field around an airplane
Electric field surrounding a
positive and a negative charge.
Hurricane
+
Magnetic field lines shown by iron
filings
Physical examples of vector fields:
-
10
Gradient of Scalar Fields
The gradient of a scalar field is a vector
field,
which points in the direction of the
greatest rate of increase of the scalar field,
and whose magnitude is the greatest rate
of change.
-
11
grad
x,y,z ctt
dr
Physical meaning: is the local variation of along dr. Particularly, grad is perpendicular to the line = ctt.
grad dr