This document discusses experiments with online harmonographs, which are devices that draw patterns using pendulums or sine waves. It introduces the project called "Movement in Space", which was supported by the Hong Kong Arts Development Council. The project website allows users to create drawings by manipulating the variables in the general formulae that define sine waves. Users can extend the complexity of the drawings by adding more variables to the equations that determine the x and y coordinates over time.

1. Movement in Space
Movement in Space
Experiments with Online Harmonograph
Supported by Hong Kong Arts Development Council

2. Who are we?
Project owner
Bryan Chung
http://www.magicandlove.com
Software development
Perry Tang

3. Project website: http://movementinspace.com

4. What is harmonograph?

5. Harmonograph and pendulum

6. Pendulum

7. Jean Tinguely

8. Jean Tinguely

9. Spirograph

10. Spirograph

11. Participation TV (Nam June Paik)

12. Oscilloscope art

13. Sine wave
y = sin (x)

14. Sine wave variation

15. Sine wave variation

16. Sine wave variation

17. General formulae
x = r * cos (t)
y = r * sin (t)

18. General formulae
x = A * cos (B*t) + C * sin (D*t)
y = E * sin (F*t) + G * cos (H*t)
where we have 8 variables: A, B, C, D, E, F, G, H

19. General formulae

20. Extend the drawings

21. Extend the drawings

22. Extend the drawings

23. Extend the drawings

24. Extend the drawings

25. Extend the drawings