popswilson

I am a retired mathematics, science, and programming teacher. I enjoy programming, fractals, and the mathematics of chaos theory. I am 85 years old and look forward every day to learning something new

Joined December 3, 2008

United States

ID: 199168

Working On

I am currently working on a fractal called ther Harriss Spiral.

Links

View on Scratch Followers Following

K-Computer in Foil and Masking Tape

3/23/2024

59 views

ChatGPT Computes the Collatz Conjecture

8/17/2023

1911

242 views

ChatGPT Counts to 100

8/16/2023

52 views

The Cuckoo's Egg Problem

6/14/2023

88 views

Transverse Wave

9/14/2022

58 views

Which Path?

7/16/2022

52 views

Boolean Algebra Part 2

6/23/2022

89 views

Boolean Algebra and Claude Shannon Part 1

6/22/2022

60 views

The K- Computer

6/20/2022

64 views

OR Gate

6/19/2022

12 views

The NOT Gate

6/19/2022

28 views

AND Gate

6/18/2022

24 views

The Logistic Equation – Cobweb Form

4/18/2022

75 views

2 Half Adders = Full Adder

3/3/2022

59 views

Full Adder using AND, OR and Not Logic Gates

2/28/2022

18 views

Full-Adder Using XOR and AND Gates

2/18/2022

107

105 views

Two Points and a Line

1/16/2022

32 views

Limit Cycle Attractor

7/2/2021

53 views

Fixed-point Attractor 2

7/1/2021

156

101 views

Collatz Revisited

6/19/2021

43 views

NAND Gate

3/11/2021

127

79 views

Sine 35º Mouse

1/21/2021

43 views

Single Die Frequencies

1/21/2021

10 views

Right Triangle Mouse

12/29/2020

1815

54 views

Scalene Triangle Mouse II

12/27/2020

17 views

Scalene Triangle Mouse I Addendum

12/21/2020

15 views

Starter Mouse

12/18/2020

17 views

Scalene Triangle Mouse I

12/18/2020

46 views

Radian Mouse

12/16/2020

31 views

Spriolateral Bot 3 (n-degree)

9/14/2020

33 views

Iterating y = f(x) Challenge

7/15/2019

91 views

y = Rx(1 – x) Gleick

7/9/2019

60 views

Only the x-axis is Needed

7/7/2019

22 views

Iteration of y = Rx(1 - x)

7/4/2019

24 views

Graph of y = Rx (1 - x)

7/4/2019

25 views

Feigenbaum's Constant

6/22/2019

2215

121 views

Strange Attractor, Parameter a

5/22/2019

71 views

Damped Harmonic Oscillator

5/4/2019

30 views

The Tinkerbell Attractor

5/3/2019

117

46 views

What is a Strange Attractor?

5/3/2019

129

49 views

The Many Attractors of x^2 + c

4/27/2019

25 views

y = 0.5x + 3 — A Simple Attractor

4/15/2019

108

56 views

Half-adder

9/8/2018

1510

198 views

The Simplest Proof of the Pythagorean Theorem

6/19/2018

2417

259 views

Wandering Balloon

4/6/2018

46 views

The Lorenz Attractor as a Time Series

1/6/2018

1811

195 views

Peano's Space-filling Curve [L-System]

1/5/2018

59 views

Cantor Dust

12/30/2017

66 views

y = Rx(1 – x) as a Time Series

12/28/2017

45 views

An Abstract Fish Population Model

12/25/2017

78 views

Nested Triangles

12/19/2017

37 views

Van der Pol Oscillator

12/15/2017

89 views

Fibonacci Spiral

10/1/2016

1311

296 views

Collatz Conjecture - Graph - N v. Number of Steps

8/18/2016

88 views

Collatz Conjecture - The Graph of N v. Orbit

8/10/2016

2010

265 views

Squareflake

7/23/2016

2012

521 views

Dequan Li Attractor

7/20/2016

99 views

A Random Number Experiment

7/14/2016

84 views

Zombie Walk - a Negative Exponential

7/11/2016

122 views

Linear Congruential Generator

7/9/2016

129

738 views

Ask Fibonacci

7/6/2016

138 views

Average Square Displacement

5/16/2016

118

183 views

Random Walk Paradox

5/10/2016

1713

293 views

Ant In a Box

4/4/2016

104

95 views

The Galton Board (Quincunx)

12/27/2015

2720

921 views

Jean Perrin's Brownian Motion Experiment

12/19/2015

218 views

Combinations

11/17/2015

167 views

Factorial

11/13/2015

715 views

Random Walk on Integer Number Line Probabilities

11/8/2015

143 views

Power of 2 Calculator

11/7/2015

1310

421 views

Chaos Game - Midpoint Formula

10/28/2015

1111

216 views

Simulating Mathematical Turbulence Using Newton's Method

10/10/2015

107

106 views

Snowflake

9/27/2015

1710

688 views

Koch Snowflake

9/27/2015

3931

3,568 views

Map of y = x*x + c as a Function of c

9/27/2015

1610

249 views

Koch Snowflake (L-systems)

9/27/2015

351 views

x^2+ c Plots

9/27/2015

92 views

Identifying the Attractors of y =x*x + c

9/26/2015

74 views

Raindrops

9/7/2015

46 views

Vee and Recursive Vee

8/15/2015

60 views

Catenary

8/9/2015

2516

188 views

A Boy and His Kite

8/6/2015

1312

380 views

Cycloid — The Helen of Geometry

7/24/2015

1611

336 views

Geometry Compass (center, radius, arc)

7/18/2015

1211

428 views

Circle (center, radius)

7/15/2015

1310

731 views

Huckster's Game

6/29/2015

1210

248 views

Grecian Urn

6/15/2015

121 views

Dewdney's Four-color Tur-mite-2

5/16/2015

118

96 views

Nested Triangles

5/12/2015

98 views

Lewis Carroll's Fifth Pillow Problem

5/4/2015

132 views

Brownian Motion in the Plane

3/23/2015

124 views

Diffusion Limited Aggregation (DLA)

3/17/2015

1010

170 views

Triangle Triplets

2/27/2015

104 views

Random Walk with Barriers

2/27/2015

119

929 views

Two Die Monte Carlo Demonstration

2/9/2015

60 views

The Short Stick

1/30/2015

47 views

The Sumerian Square Root Algorithm

1/28/2015

100 views

Gosper's Flowsnake (Lindenmayer System)

1/19/2015

104

120 views

Lorenz Attractor and Sensitivity to Initial Conditions

1/11/2015

3825

1,077 views

Langton's Ant – Random Squares Experiment

1/1/2015

134 views

Binary Ant

12/26/2014

130 views

Langton's Incredible Shrinking Ant

12/24/2014

146 views

Dewdney's Four-color Tur-mite

12/23/2014

48 views

Galvanotaxis

12/1/2014

126

160 views

robot_line remix

11/9/2014

142 views

Miller's Madness

5/28/2014

108

77 views

Paralllel Mouse

5/22/2014

107 views

Zombie Walk - a Negative Exponetial

5/16/2014

90 views

Comte de Buffon's Probability Problem

4/29/2014

144 views

Bertrand's Random Chord Paradox 3

4/21/2014

159

172 views

Angle Mouse

4/16/2014

195 views

Perpendicular Mouse

4/16/2014

113 views

Bertrand's Random Chord Paradox 2

4/7/2014

108

220 views

Bertrand's Random Chord Paradox 1

4/1/2014

112

301 views

Random Chord

3/28/2014

167 views

Area of Texas

2/8/2014

333 views

Monte Carlo Simulation of Pi

1/26/2014

3317

2,349 views

Distance Formula Tutorial (start)

1/7/2014

202 views

Ant & Mouse-pointer

1/7/2014

408 views

Hopalong -

1/1/2014

217 views

The Dancing Stick

12/24/2013

149 views

Crawling Caterpillar

12/20/2013

1913

682 views

Collatz Conjecture-Introduction

12/17/2013

2616

1,022 views

Sierpinski Triangle - L-systems

10/28/2013

174 views

Chaos Lurks in y=Rx(1–x)

10/18/2013

490 views

Pledge Algorithm - Large Maze

10/12/2013

1,142 views

Pledge Algorithm Maze

10/12/2013

1,932 views

The Letter G-maze Test

10/12/2013

637 views

Binary Search Tree

10/11/2013

118

839 views

Wolfram Cellular Automaton Rule 90

9/29/2013

1412

627 views

Iteration of y=(x+6)/2

9/15/2013

178 views

Lorenz Attractor 2 Points

9/14/2013

104

278 views

Rectilinear motion and graphs remix

8/19/2013

317 views

Fiield of View and Depth of Field

8/12/2013

197 views

Double Pendulum Chaos Simulation remix

7/20/2013

778 views

'Roll' Defined

7/18/2013

1712

495 views

Cross-stitch Curve

7/10/2013

367 views

An Ink-Drop-in-Water Model of Diffusion

7/8/2013

2011

1,617 views

Feynman's Random Walk

7/8/2013

127

549 views

Spirolateral Bot 2

7/6/2013

364 views

Spirolareral Bot 1

7/6/2013

362 views

The C – curve

7/3/2013

1411

410 views

Pendulum with Damping

7/3/2013

2415

671 views

The Dragon Curve

6/28/2013

135

409 views

Peano's Space-filling Curve

6/27/2013

1311

401 views

Ueda Attractor - Remix

6/24/2013

209 views

G-Poly (start)

6/18/2013

83 views

Rossler's Attractor

6/15/2013

136

382 views

Hennon's Attractor

6/15/2013

173 views

Circle Squared

6/14/2013

4525

1,184 views

Complex Number Calculator remix

6/13/2013

159 views

Law of Plane Reflection

6/5/2013

523 views

Mandelbrot Set

5/28/2013

6755

5,718 views

Thigmotaxis

5/25/2013

102

532 views

Make a Block Exercise

5/12/2013

478 views

The Golden Triangle

5/9/2013

168

653 views

Hilbert's Space-filling Curve

4/20/2013

1610

1,996 views

XOR Gate

4/17/2013

148

916 views

Wallpaper

3/2/2013

287 views

The Fern - Using the Collage Theorem

2/24/2013

1110

408 views

Sierpinski Triangle - Barnsley's Collage Theorem

2/19/2013

529 views

Projectile Motion - A Quadratic

2/5/2013

2832

3,445 views

Lorenz Attractor

1/29/2013

681 views

A Futile Chase

1/18/2013

104

371 views

Beating Heart

12/23/2012

3834

2,517 views

Sine Wave (frequency)

12/21/2012

566 views

Sine Waves Two

12/15/2012

127 views

Sine Wave

12/10/2012

571 views

Lindenmayer System Squareflake

11/14/2012

300 views

Golden Rectangle

10/27/2012

4127

1,801 views

Ostracod in Pond Water

10/6/2012

138 views

3 Paramecia in Pond Water

10/6/2012

184 views

Bug In a Box 2

5/15/2012

63 views

Euclidean Algorithm

6/3/2010

193 views

Fibonacci Numbers

6/22/2009

80 views

Rotating Mirror

12/25/2008

459 views

One Blind Mouse

12/22/2008

219 views

Marching Band

12/15/2008

213 views

Jackson Pollock

12/3/2008

1510

734 views

Four Bug Problem

12/3/2008

4425

566 views