Mon 23 Dec, 2013 02:32 am - That's what I am trying to figure out. I think the following are related:
1. Rinsing your mouth - guess 1/2
2. Rinsing a bottle - guess 1/2
3. Put cream in a bottle to make some kind of... (view)
Sat 21 Dec, 2013 02:56 am - PHYSICS of Brushing your teeth:
I spent a few weeks a few years ago, five minutes here and there, trying to figure out what is the optimal amount of water that you should put in your mouth to get... (view)
