praful1219

marcdevaThis is what I was expecting. Actually in general we know how to control the energy for any specified utilization. Main question is how to generate and preserve. How will...

he idea of using mainspring is thought that i have been working upon, i have reached till here, 1) if likewise a wrist watch, an entrapment or gear mechanism is...

the idea of using mainspring is thought that i have been working upon, i have reached till here, 1) if likewise a wrist watch, an entrapment or gear mechanism is...