Recent content by stevan

maybe it's depend on the atmosphere pressure.. As I know, helicopter when fly have maximum height, because higher than that, the atmosphere pressure too low

I know this won't work, because each time replacing with empty capacitor, the charge split up between 2 capacitor and getting smaller and smaller

:smile: No sir, I don't want to make this complicated.. My point is: is the capacitor do the same act as the inverted battery? the difference is the voltage of the capacitor is not constant 6 volt but growing from 0 to 12 volt If so, then formula energy come from battery CV^2 is not...

then, if I add one more battery 6 volt at the bottom of the first 12 volt battery...in backward position...now what voltage is V in the formula? is the capacitor just like this 6 volt battery (the difference is the voltage is grow from 0 to 12 because of charging)?

If I use battery 12 volt to charge a capacitor... in this formula CV^2 , what voltage is V ? is it the battery voltage ( constant 12 volt), or difference voltage between battery and capacitor (at first 12 volt and gradually down to 0 volt) ? then, if I add one more battery 6 volt at the...

I don't understand why the voltage is not the same sir.. maybe easier when I assume the battery voltage is stable at 12 volt.. when I put on the battery and close the switch, the voltage of the capacitor start from 0 climbing to 12 volt...and the difference voltage between battery and capacitor...

yeah right, I will need thick wire for this..and I think, if I know the largest hole allowed, I also can reduce the requirement of thick wire

yeah right...I saw them use chain mail...that have holes very small..and the tesla coil always far enough from the cage

that's what make me confused sir.. I think the battery's energy form is the moving electron, and lamp only slow down the electron movement because the filament is very thin. What if I don't use battery? Instead, I use fully charged super capacitor with same capacity with capacitor that I...

ugh, it's difficult for me analyse this from the formula... what I see is electron come out from battery terminal (-) to the one plate of the capacitor, that make electron from other plate of the capacitor pushed away and enter the battery terminal (+) when the voltage between battery and...

yes sir, I know the lamp will dimmer and dimmer till it's completely off when the capacitor is full. but, at that time, the energy (current) that come out from the battery also smaller and smaller till it's completely stop. What I see is : energy that come out from the battery is entered the...

I give example in real world...and I see that look like overunity where the ouput is twice of input... still, it's about physics..and it's in the real world... If my analysis is wrong, then correct me

I build simple electronic like this picture...

maybe at normal condition, plane and car can protect from lightning, I think because the car/plane body have shorter distance to the lightning source than the passenger inside...so, what if the passenger stick their head to the window when the lightning struck ? also, I think because the window...

if I build a faraday cage just to protect device from lightning or other electrostatic source (not electromagnetic pulse), and I need that as light as possible... I will build it using a mesh to make it light.. now, how large the mesh' holes is allowed ? is there any calculation for this...