hi gohm one thing i cant able to understand how co2 produces during cooling process. is co2 is used as refrigerant in cooling system......? now days i think nh3 is...

gohmSliding horizontally or vertically along pipe? How about some worm drive tightening bands (think like hose clamps) at either end. These would tighten & loosen around the pipe. A long...

hi einstein bro.. i want to tell u that energy is conserved , it can neither be created nor destroy it can only be transformed into one or another form....

yes bio diesel will be the future fuel..... as u all hv healthy discussion abt air engines. u see air run engine cost us more ,we hv to waste energy...

hi i want to make a self propelled machine which can move on a circular pipe i.e on the outside surface of pipe . i need sliding mechanism.............. plzz help...