HOW TO CREATE A PENDULUM WAVE

Greetings Magicians! 

In this Tutorial you'll learn how to procedurally create a Pendulum Wave, and play with all its parameters. 

You can go directly to any section with the timings below :
Part 1 - Explanations 1:28

Part 2 - Creating the strings 2:15

Part 3 - Vellum simulation 22:08

Part 4 - Creating the spheres 26:38
Part 5 - Converting into a HDA 29:59

The idea, Maths and principles come from the great NightHawkInLight.

Here's the link to his video :
https://www.youtube.com/watch?v=_8JMVl-_KKs

And here's everything you need to have to follow this tutorial :
- Formula : https://www.education.com/science-fair/article/pendulum-waves/

- Diagram : https://drive.google.com/open?id=1NXIlh0IBv0z5qVqjiM-1ZQu9RpN20QwQ

- Calculations : https://drive.google.com/open?id=1oC-clKyLauzJ0doBZJEbcJIvkOsTg4Vo

It's my first tutorial, so I'd really appreciate your feedback and insights : feel free to comment with your creations, ideas on Houdini tutorials you'd like me to do or ways to improve! 

Have fun casting that spell !