 | Joseph F. Keithley - 1999 - 264 Seiten
...action of a pointed conductor, Franklin proposed to draw down the lightning (Figure 7.2, "Fig." IX): "On the top of some high tower or steeple, place a kind of a sentry box big enough to contain a man and an electrical (insulating) stand. From the middle of the... | |
 | James Campbell - 1999 - 322 Seiten
...the hypothesis.55 Franklin's proposal was dated 29 July 1750. He writes that to determine "[wjhether the Clouds that contain Lightning are electrified or not, I would propose an Experiment to be try'd where it may be done conveniently." He thought that the experiment would not yet be 'convenient'... | |
 | James Campbell - 1999 - 316 Seiten
...no buildings that he thought were sufficiently tall. The experiment was proposed to run as follows: On the Top of some high Tower or Steeple, place a Kind of Sentry Box big enough to contain a Man and an [insulated] electrical Stand. From the Middle of the... | |
 | Tom Tucker - 2009 - 304 Seiten
...inclement weather. Franklin writes: To determine the question, whether the clouds that contain Eghtning are electrified or not, I would propose an experiment...top of some high tower or steeple, place a kind of sentry box big enough to contain a man and an electrical stand [an electrically insulated platform].... | |
 | Walter Isaacson - 2004 - 628 Seiten
...used a needle to draw off the charge of an iron ball in his lab. He detailed his proposed experiment: On the top of some high tower or steeple, place a kind of sentry box big enough to contain a man and an electrical stand. From the middle of the stand, let an... | |
 | Oliver J. Thatcher - 2004 - 466 Seiten
...before it came nigh enough to strike, and thereby secure us from that most sudden and terrible mischief? To determine the question, whether the clouds that...high tower or steeple, place a kind of sentry-box, (as in Fig. 9,) big enough to contain a man and an electrical stand. From the middle of the stand let... | |
 | Ioan James - 2004 - 420 Seiten
...towers and churches may be effectively secured from the strokes of light.' He proposed an experiment: To determine the question, whether the clouds that...electrified or not, I would propose an experiment where it may be tried out conveniently. On the top of some high tower or steeple, place a kind of sentry... | |
 | David Lindsay - 2005 - 419 Seiten
...Franklin. Among the attractions was the simulated use of a lightning rod. Brown University Libraries To determine the question Whether the Clouds that...electrified or not, I would propose an Experiment to be try'd where it may be done conveniently. From the Middle of the Stand let an Iron Rod rise, and pass... | |
 | Sue Ann Prince - 2005 - 160 Seiten
...together with electrical experimenter Delor, performed the experiment that Franklin had sketched out to "determine the Question, Whether the Clouds that contain Lightning are electrified or not." Franklin had suggested that a sentry box, big enough to accommodate a man and an electrical stand,... | |
 | Benjamin Franklin - 2006 - 317 Seiten
...experiment be made. Experiment to Determine Whether the Clouds That Contain Lightning Are Electrified, 175o On the Top of some high Tower or Steeple, place a Kind of Sentry Box big enough to contain a Man and an electrical Stand. From the Middle of the Stand let an... | |
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Fig. 9,) big enough to contain a man and an electrical stand. From the middle of the stand let an iron rod rise and pass bending out of the door, and then upright twenty or thirty feet, pointed very sharp at the end. If the electrical stand be kept clean... 
