# Javascript Pages

Steven Dutch, Professor Emeritus, Natural and Applied Sciences,
Universityof Wisconsin - Green Bay

This page is mostly a convenience to me, so I can locate and borrow code.

## Astronomy

Some Major Orbit Types

The (Almost) Venus-Earth Pentagram

Kepler's Second Law

## Structural Geology

Create a stereonet

Create an Equal Area Net

Draw Structure Contours on a Plane, Given Strike
and Dip

Find Strike and Dip of a Plane Given
Structure Contours

Find Structure Contours
Given Three Points

Find Strike and Dip Given
Three Points

Draw Elevation Points on a
Line, Given Trend and Plunge

Find the Intersection
of Two Planes

Plot a Plane on a stereonet
,
Given Strike and Dip

Find Strike and Dip
of a Plotted Plane on a stereonet

Plot a Line on a stereonet
Given its Trend and Plunge

Find Trend and Plunge of a Line on a stereonet

Find the Intersection of Two Planes on a stereonet

Find the Apparent Dip of a Plane

Plot a Pole to a Plane on a stereonet
, Given Strike
and Dip

Find Strike and Dip of a Plane on
a stereonet
, Given its Pole

## Mineralogy

Plane Space Groups

3-Dimensional Point Groups

## Petrology

Binary Eutectic

javascriptinprog
/incongruent.htm

Ternary Eutectic

## geometry

Astroid as Envelope of Ellipses

Cardioids and Limacons

Deltoid

Ellipse as a Negative Pedal

Epicycloids

Hypocycloids

Kepler's Second Law

Morley's Triangle

Nephroids

Oblique Ellipses

Parabola as Envelope of Lines with
Constant Sum of Intercepts

Parabola as a Negative Pedal

Steiner Chains

Logarithmic Spiral Tesselations

Attractors

javascriptinprog
/drawpolyGraph9f10v.html

javascriptinprog
/drawpolyGraphData9f10v.html

Return to Professor Dutch's Home Page

*Created 12 July 2014, Last Update
01 June 2020*