| Y/M/D | Description | Place |
|---|---|---|
| 1752/00/00 | Benjamin Franklin theorizes he could extract electricity from a cloud with an iron rod attached to the yet to be completed steeple of Christ Church, Philadelphia. | Christ Church, Philadelphia, PA |
| 1752/06/15 | William Franklin witness as the wet twine on his father's kite conducts the electric fire freely from lighting. | |
| 1752/06/15 | Impatient to wait for the steeple at Christ Church to be finished, Franklin flies a kite into storm clouds. Tied to the string is a metal key which attracts the electrical charges and a silk ribbon to insulate himself. | |
| 1760/00/00 | Benjamin Franklin makes further improvements towards a reliable lightning conductor system. | |
| 1786/00/00 | Clock maker, Robert Leslie, advises Dr Franklin that gilding the points of lightning rods would prevent their rusting. |
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