I think I may have discovered the process the led Tesla to discover alternating current.
Unlike myself, he may have known about the Odd Number Rule LINK ---in bold below--- and like myself started with simple symmetrical pattern as follows;
Step 1, we see in bold the Odd Number Rule of numbers in bold in two rows of the symmetrical four level/line sine-wave pattern:
0.............................6.................................12......................................18.....................................24
....1...................5p......7p.................11p.........13p.....................17p.........19p....................23p....
.........2p.......4...................8.......10...........................14.........16...........................20........22.............
..............3p............................9........................................15.......................................21..................
Step 2, he did as Ive done and inside outed the lines/levels --take note of the two inside-the-tube lines of T and B, wherein the two Odd Number Rule lines are nex to each other;
G…1………….5p…….7p………..11p……13p…………..17p……19p.................23p
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T……..…3p…………………9……….……………..15……………………….21..........
B0..…………………..6…………………...12………………………18...............................
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DE…2p….....4……………8…...10………………14…….16………………20........22....
Step 3: He then alternated the inside lines ergo and oscillating pattern--- ergo the two inside-the-tube, lines-of-reality---, where we now find B is alternated with T;
G…1………….5p…….7p………..11p……13p…………..17p……19p.................23p
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T0..…………………..6…………………...12………………………18...............................
B……..…3p…………………9……….……………..15……………………….21..........
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DE…2p….....4……………8…...10………………14…….16………………20........22....
Step 4, we see the alternating of Odd Number Rule line back to Top peak of sine-wave of reality pattern /\/\/\/
G…1………….5p…….7p………..11p……13p…………..17p……19p.................23p
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B……..…3p…………………9……….……………..15……………………….21..........
T0..…………………..6…………………...12………………………18...............................
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DE…2p….....4……………8…...10………………14…….16………………20........22....
Step 5, here below we can show only two inside-the-tube, lines-of-reality alternating between Top of sine-wave peak and bottom of sine-wave peak;
B……..…3p…………………9……….……………..15……………………….21..........
T0..…………………..6…………………...12………………………18...............................
T……..…3p…………………9……….……………..15……………………….21..........
B0..…………………..6…………………...12………………………18...............................
B……..…3p…………………9……….……………..15……………………….21..........
T0..…………………..6…………………...12………………………18...............................
T……..…3p…………………9……….……………..15……………………….21..........
B0..…………………..6…………………...12………………………18...............................
To be clear, for Tesla, he saw the two inside-the-tube, lines-of-reality as electrical currents, that, were could be alternated cycles per second.
I dunno, but this discovery by me may also be a method that Tesla used. It makes sense, if he was into the study of number patterns and new about the odd number rule. I dunno. Just wild speculation.