Photo allows direct measurement of Peary's
position at Pole...
 |
||||||
|
|
||||||
|
Having worked on the 1988-1989 Navigation Foundation study
of the Peary controversy, I am persuaded that Peary reached the
pole. The reasons for this would fill a book, but the best brief
illustration of the support for Peary's claim is provided by
this remarkable photo (right). Ample evidence contained in the various photos that Peary took at the pole camp an in the narratives of Peary and Henson establish that these photos were taken at the pole camp at about 8:00 to 10:00 p.m. on April 6, 1909. (The exact time is not terribly important, since at the pole the sun would circle at nearly the same altitude, increasing only about 1/3 of a degree per day at that time of year.) The angle of the sun above the horizon (altitude) in these photos can be determined by comparing the photos to the images made by a camera of the type Peary used of objects with known angular separation. The result is that the sun's altitude is essentially identical to the sun's altitude that would have been observed at the pole. Peary's most outspoken critics agree with this conclusion. Of course, the same solar altitude would be obtained anywhere along a "line of position" extending from the pole along approximately the 100th meridian of longitude. Peary's diary and his account of the expedition indicate that he believed he had covered the necessary distance to reach the pole and confirmed that belief with navigational observations prior to the time he took these photos, but had not yet confirmed his east-west position. The estimated distance was confirmed by Henson. If the distance estimate was correct, the line of position generated by the photos conclusively fixes Peary's position very close to the pole. To me, the mere fact that Peary took and retained these photos is convincing evidence that he did in fact believe he had covered the distance to the pole, and further that he was confident that he was at least reasonably on track. If he was far short, and making up phony distance estimates, he certainly would have known it, and he would have known that a photo of the sun potentially would be a smoking gun. The critics, of course, see it differently. According to them, Peary stopped far short of the pole and then determined his longitude through observations, the records of which Peary apparently destroyed (since they no longer exist). Based on the photos, this longitude would have been about 100 west. Armed with his longitude, Peary could safely take a photo of the sun when it was due east or due west (six hours before or after the sun passed the 100th meridian), since at that time the sun would be essentially at the altitude that would be observed at the pole. Then, having pulled off a wonderfully successful couple of photos showing exactly what Peary wanted them to show, he decided not to submit them as evidence that he had reached the pole or even publish them at all. Why? Because someone might have argued that he needed more photos at demonstrably different times to provide a complete cross-fix of his position. Did Peary take these photos out of an innocent expectation that they could do him no harm, or as part of a diabolical scheme that he decided to abandon? You decide. Douglas R. Davies January 2002 |
|
|||||
