You are here: start » whitepapers » sequences » repscalarfield

**This is an old revision of the document!**

Table of Contents

## Representations of Two-Dimensional Scalar Fields

### Activities

**Representations of Temperature in Two Dimensions***(Estimated time: 5 minutes)*: This small whiteboard questions prompts students to think about ways in which to represent temperature in two dimensions which is an example of a two dimensional scalar field.

**Surfaces Activity I***(Estimated time: 5 minutes)*: This small group activity first has students draw lines of “isoheight” on the surfaces. Next, students are given topographic maps which correspond to the surface and asked to match the surface to the contours using their “isoheights”. This requires students to become familiar with two representations of a two-dimensional scalar field and work between the two representations.

**Scalar Field Examples***(Estimated time: 5 minutes)*: This small whiteboard question is prompted by a definition of a scalar field in terms of the temperature. Students are asked to give examples of scalar fields and responses may include sound intensity, mass density, charge density, and electrostatic potential.

**Representations of Two-Dimensional Scalar Fields***(Estimated time: 10 minutes)*: This whole class discussion involves student ideas about ways in which to represent scalar fields. The strengths and weaknesses of many different representations of two-dimensional scalar fields are discussed among students and the instructor.

### Superposition of Electrostatic Potential (Point Charges)

**Recall the Electrostatic Potential due to a Point Charge***(Estimated time: 5 minutes)*: This small whiteboard question asks students to write a formula for the electrostatic potential everywhere in space due to a point charge.

**Lecture on Electrostatic Potential and Superposition of Charges***(Estimated time: 20 minutes)*:

**Drawing Equipotential Surfaces***(Estimated time: 45 minutes)*:

**Visualization in 3d***(Estimated time: )*: