Recent content by EngineeringFuture

You're absolutely correct. I was an idiot above.

Do you have any links I could see with the diagrams and math worked out?

Does an object have to be either spherical or cylindrical to be rolled in a straight line. Could an approximately conical object be rolled in a straight line or struck to roll in a straight line? A cone can be rolled in a straight line if different forces are applied at different spots, but once...

But again, how could you distinguish between lowering the resistance and increasing the voltage without standardized measuring instruments?

Weren't they just figuring out redox reactions? Isn't knowledge of redox reactions necessary to associate mass changes with electric current? I don't think current balances existed until the late 19th Century, and I think scientists like Kelvin who built them were dependent on the discoveries...

@SredniVashtar,, Thanks for posting. So Volta was feeling the electric current but noticed that certain phenomena that made the electric current increase didn't seem to be creating electric charges on objects even though they made the electric charge move. So he initially likened this...

There are so many concepts in science, especially Physics, that make absolutely no sense to me unless I begin to study the underlying history of the concepts. So please correct me when I'm wrong because I'm sure I am sometimes. The first concept I think about is Voltage. I was extremely familiar...

The pivoting edge is free to move along the table

Then it's simple enough to test if we can find a bored astronaut. I think it would slide in a vacuum.

Are you implying that the card wouldn't slide in a vacuum?

I hold my identification card on a low-friction surface by one of its edges. I slightly lean it, and it starts to fall. Before it falls over, I place my finger against the card, and this prevents it from falling all the way over. Then, I withdraw my finger without pushing or pulling the card and...