FREE BOOKS

Author's List




PREV.   NEXT  
|<   130   131   132   133   134   135   136   137   138   139   140   141   142   143   144   145   146   147   148   149   150   151   152   153   154  
155   156   157   158   159   160   161   162   163   164   165   166   167   168   169   170   171   172   173   174   175   176   177   178   179   >>   >|  
ld be observing a body at twice as great an elevation. The error would be, in fact, in this case, about 1 mile 1512 yards. It seems not at all unlikely that astronomers, so skilful and ingenious as the builders of the pyramid manifestly were, would have employed both methods. In that case they would certainly have obtained widely discrepant results, rough as their means and methods must unquestionably have been, compared with modern instruments and methods. The exact determination from the shadow plan would have set them 1125 yards to the north of the true latitude; while the exact determination from the Pole-star method would have set them 1 mile 1512 yards south of the true latitude. Whether they would thus have been led to detect the effect of atmospheric refraction on celestial bodies high above the horizon may be open to question. But certainly they would have recognized the action of some cause or other, rendering one or other method, or both methods, unsatisfactory If so, and we can scarcely doubt that this would actually happen (for certainly they would recognize the theoretical justice of both methods, and we can hardly imagine that having two available methods, they would limit their operations to one method only), they would scarcely see any better way of proceeding than to take a position intermediate between the two which they had thus obtained. Such a position would lie almost exactly 1072 yards south of true latitude 30 deg. north. Whether the architects of the pyramid of Cheops really proceeded in this way or not, it is certain that they obtained a result corresponding so well with this that if we assume they really did intend to set the base of the pyramid in latitude 30 deg., we find it difficult to persuade ourselves that they did not follow some such course as I have just indicated--the coincidence is so close considering the nature of the observations involved. According to Professor Piazzi Smyth, whose observational labours in relation to the great pyramid are worthy of all praise, the centre of the base of this pyramid lies about 1 mile 568 yards south of the thirtieth parallel of latitude. This is 944 yards north of the position they would have deduced from the Pole-star method; 1 mile 1693 yards south of the position they would have deduced from the shadow method; and 1256 yards south of the mean position between the two last-named. The position of the base seems to prove beyond all possibil
PREV.   NEXT  
|<   130   131   132   133   134   135   136   137   138   139   140   141   142   143   144   145   146   147   148   149   150   151   152   153   154  
155   156   157   158   159   160   161   162   163   164   165   166   167   168   169   170   171   172   173   174   175   176   177   178   179   >>   >|  



Top keywords:

position

 

methods

 

latitude

 

method

 

pyramid

 
obtained
 

shadow

 

scarcely

 

Whether

 
determination

deduced

 
assume
 

proceeded

 

result

 

architects

 

intermediate

 

possibil

 

Cheops

 

parallel

 

relation


labours

 

observational

 

praise

 

worthy

 

nature

 

involved

 

According

 

Piazzi

 

observations

 

centre


follow

 
persuade
 

difficult

 

Professor

 

thirtieth

 
coincidence
 

intend

 

unquestionably

 

results

 

widely


discrepant

 

compared

 

modern

 

detect

 

effect

 

instruments

 
employed
 

elevation

 

observing

 

builders