Recent content by akahmed

I am trying to include salt water in my Rube Goldberg project. Instead of the wires that connect a motor simply being continuous, I want to bridge a connection through salt water. Meaning, but one wire, put both ends in the solution so that the connection still works. But its not working. Are...

Ok, so I found out that I cannot use the resistance coils. I was reading that rubber has low thermal conductivity and what if I connect a balloon to a larger cup, the vacuum the air out from between them so the balloon inflates from within. Also does anyone know if the fact that not all of...

Could you explain how to do the electric heating?

We cannot use foam or fiberglass, the hard part is to make it small and light. So what can I do, in conjunction with the vacuum to maintain high temp?

Thank you for your help. The is going to be sealed, and there will be sheet cork around the outside of the inner cup. I have designed a bike pump to act as a vacuum and it removes over 75% of the air Any other thoughts?

We just got assigned to make an insulted cup for holding 200cc of boiling water It has to be able to hold 1 liter of water though Also, must be minimal size and mass There is a competition and whoever has the warmest water after 10 minutes, w/ smallest size and mass, gets the most points, wins...