Qualification > Sciences
PHYSICS, CHEM HELP NEEDED
godfather93:
ok here's another question. We've all being studying electricity. But can u answer this simple question -
Before the discovery of electrons, how were the terminals of the battery marked as positive and negative?
godfather93:
moreover, i would like to know that if u guyz have learnt the quantum theory, are we supposed to just memorize the postulates and rules or is there any background info given to u on how the scientists discovered it?
sorry that i have loads of questions! :-[
godfather93:
According to the atomic theory, atoms are moving all the time, but to different extents in solids, liquids and gases. if we accept the theory, the question is why can't we see the motion of atoms in a liquid i.e why does it seem to be standing still when all the molecules are constantly moving here and there?
nid404:
--- Quote from: godfather93 on February 15, 2010, 12:14:36 pm ---ok here's another question. We've all being studying electricity. But can u answer this simple question -
Before the discovery of electrons, how were the terminals of the battery marked as positive and negative?
--- End quote ---
when were batteries invented??:P
godfather93:
1800, by Allesandro volta
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