Slime Sam finds it hard to believe that water has great power. Drops of water are so small, what can they do? But Sue explains about hydraulics – a science that studies the properties of [More]
How to Make Hydraulic Powered Robotic Arm from Cardboard In this video I show you how to make robotic arm from cardboard, it’s quite fun to plaw with. Especially by moving coca cola cans. You [More]