I’m setting up a seperate thread to Discuss Khafre Pyramid. Referring to Sections 66 and 67 of Petries Pyramids and Temples of Gizeh [www.ronaldbirdsall.com]
In S66, Petrie finds a mean baselength of 8474.9 inches and with casing intact, an angle of 53 degrees 10 minutes or 53.1666r decimal degrees.
However Petrie calculates a height in Section 67 of “Hence the height will be 5,664 ± 13 inches.” Here I think Petrie has made an error in calculation. To determine the height, using the triangle from midpoint on the base to centre (half of baselength) multiplied by tan of the angle.
When I do 0.5 x 8474.9 x tan (53.1666r) I get 5657.45 as the height.
Petrie determines in ch 20 the length of the Cubit to be 20.62 inches.
5657.45 / 20.62 yields 274.36 Cubits height
8474.9 / 20.62 yields 411.00 Cubits baselength
What we have here is something really interesting if we assume they should be integer values of cubits:
274 = 137 x 2 cubits height
411 = 137 x 3 cubits baselength
137 is a prime number. When you look at the triangle you find it’s a scaled down 3-4-5 triangle. Petrie also noted that he thought it was expressing a 3-4-5 triangle. I’m curious about the use of 137 in the multiple. As it turns out 137 is a very important number in physics known as alpha or the Fine Structure Constant or Sommerfelds Constant refer to [en.m.wikipedia.org] this constant is interesting because it is dimensionless- ie it is the same value Irrespective of units used. It characterises the strength of the electromagnetic interaction between elementary charged particles. It’s value is approximately 1/137
In S66, Petrie finds a mean baselength of 8474.9 inches and with casing intact, an angle of 53 degrees 10 minutes or 53.1666r decimal degrees.
However Petrie calculates a height in Section 67 of “Hence the height will be 5,664 ± 13 inches.” Here I think Petrie has made an error in calculation. To determine the height, using the triangle from midpoint on the base to centre (half of baselength) multiplied by tan of the angle.
When I do 0.5 x 8474.9 x tan (53.1666r) I get 5657.45 as the height.
Petrie determines in ch 20 the length of the Cubit to be 20.62 inches.
5657.45 / 20.62 yields 274.36 Cubits height
8474.9 / 20.62 yields 411.00 Cubits baselength
What we have here is something really interesting if we assume they should be integer values of cubits:
274 = 137 x 2 cubits height
411 = 137 x 3 cubits baselength
137 is a prime number. When you look at the triangle you find it’s a scaled down 3-4-5 triangle. Petrie also noted that he thought it was expressing a 3-4-5 triangle. I’m curious about the use of 137 in the multiple. As it turns out 137 is a very important number in physics known as alpha or the Fine Structure Constant or Sommerfelds Constant refer to [en.m.wikipedia.org] this constant is interesting because it is dimensionless- ie it is the same value Irrespective of units used. It characterises the strength of the electromagnetic interaction between elementary charged particles. It’s value is approximately 1/137