Physiogram's are rather old actually, dating back to the 19th century, and have become rather lost in time, so here is how I created these interesting photographs.
Step 1: Setting up the Equipment
Note: If you're like me you have a bunch of really small single led's lying around. These do not have enough weight by themselves to create smooth physiograms, and therefore need to be tied down with something a little heavier. Anything will work, but make sure you can secure it safely so you don't have objects falling on your camera lens.
Now tie the other end of the string to something attached to the ceiling, hanging down anywhere from 1 to 2 meters from the ceiling (this will be adjusted later). I found my ceiling fan to be perfect for this.