DOI Page / Citation link:
https://doi.org/10.11588/diglit.14#0016
10
THE AZIMUTH TRENCHES.
See Diagram.
131 S Ρ = Ο Ρ .'. Ρ is in centre between O and S.
though Τ U is not = Μ Ν .•. Μ O = S TT (true within errors of measurement).
132 O S = S D = D O .'. O S D is an equilateral triangle.
133 J E is parallel to O C, or C Έ = Ρ S.
134 .•. O C A = angle across top of Pyramid.
135 Ν C = Τ C.
Though the middle between Ν and Τ is not opposite Pyramid centre, yet this is
neutralized by the different azimuths of base and trench axis.
136 NCT = angle of top of Pyramid face, within 1', quite within errors.
137 V C D = 51° 45' 27"Ό5, nearly 51° 51' ; ν cotan nearly = sine at 51° 51'.
138 As Τ Ρ J is 180°—angle at top of Pyramid, .•. — 2 X 51° 5Γ.
So that 51° 51' is repeated 3 times. Τ Ρ J = 2, and J Ρ Q = 1, and Q Ρ Ν is slightly less
than half of 51° 5Γ, suggesting 7 X 51° 5Γ in the whole circle; the surplus over the circle
being such that starting from E. side of N. and going E. N. W. S. to ~W. side of N. we get
7 x 51° 51' ; i.e. angular breadth of N. from Ρ = (7 X 51° 510-360°.
139 Base circle cuts trench axis at O and S, i.e. inner ends of N. and S. trenches.
140 Ρ Τ or length of S. trench from trench centre, Χ 10 = 4 arris lines of Pyramid.
141 Ρ Η or length from step in E. N. E. trench to centre = i base diagonal from centre to corner.
142 S Τ or length of South trench == 100 King's Chamber Units.
143 V U or base circle on S, side to trench axis — 100 „ „
144 Ρ J or total length E.N.E. trench to centre = 160 „ „
14
li'
I4Í
Hi
15«
is;
in
145 Breadth at Gr, or inner end E.N.E. trench = 8
or 2*0 °f ^rencn length (see No. 142)
THE AZIMUTH TRENCHES.
See Diagram.
131 S Ρ = Ο Ρ .'. Ρ is in centre between O and S.
though Τ U is not = Μ Ν .•. Μ O = S TT (true within errors of measurement).
132 O S = S D = D O .'. O S D is an equilateral triangle.
133 J E is parallel to O C, or C Έ = Ρ S.
134 .•. O C A = angle across top of Pyramid.
135 Ν C = Τ C.
Though the middle between Ν and Τ is not opposite Pyramid centre, yet this is
neutralized by the different azimuths of base and trench axis.
136 NCT = angle of top of Pyramid face, within 1', quite within errors.
137 V C D = 51° 45' 27"Ό5, nearly 51° 51' ; ν cotan nearly = sine at 51° 51'.
138 As Τ Ρ J is 180°—angle at top of Pyramid, .•. — 2 X 51° 5Γ.
So that 51° 51' is repeated 3 times. Τ Ρ J = 2, and J Ρ Q = 1, and Q Ρ Ν is slightly less
than half of 51° 5Γ, suggesting 7 X 51° 5Γ in the whole circle; the surplus over the circle
being such that starting from E. side of N. and going E. N. W. S. to ~W. side of N. we get
7 x 51° 51' ; i.e. angular breadth of N. from Ρ = (7 X 51° 510-360°.
139 Base circle cuts trench axis at O and S, i.e. inner ends of N. and S. trenches.
140 Ρ Τ or length of S. trench from trench centre, Χ 10 = 4 arris lines of Pyramid.
141 Ρ Η or length from step in E. N. E. trench to centre = i base diagonal from centre to corner.
142 S Τ or length of South trench == 100 King's Chamber Units.
143 V U or base circle on S, side to trench axis — 100 „ „
144 Ρ J or total length E.N.E. trench to centre = 160 „ „
14
li'
I4Í
Hi
15«
is;
in
145 Breadth at Gr, or inner end E.N.E. trench = 8
or 2*0 °f ^rencn length (see No. 142)