Convection in a heater??Easy best answer!! a little science ques..?

Question

How does convection occurs in an electric heater, the one that has vents on top or bottom? And if you could include a diagram that shows how convection occurs in an electric heater or just explain it in words!! Thx!

EASY BEST ANSWER!!!!

Answer 1

Easy HUH! well here is what goes on....the electric power is forced  through the wire (generally a Ni-chrome coil) the force is resisted by the molecular composition of the wire. As more electricity ,than will pass , is forced through the wire it glows "red" hot in some parts. The mathematical example is a BELL curve ...anyway most of the wire is hot...as we all know when things heat up the rapid vibration of the atoms(of air or water ) causes them to do their best to move away from the heat source.. this leaves a hole in the air to be filled by cooler air...since heat which is less  dense than cool rises . The top of the heater get hot and you can make fudge or whatever...Also since the medium of transfer is expanding it makes a void large enough for just the right amount of cool air to run in and convection takes place( lots of folks consider this a type of thermal siphon)...Convection is the direct result of heat escaping from the heated source and warming the transfer media around it....There ya go from the E..In thermodynamics you get to learn how to do all sorts of really neat heat problems,,,be sure when the time is right for you that thermo is investigated....E....E....E.....E