﻿THE 
  CIRCUMSTANCES 
  OF 
  AN 
  ECLIPSE 
  OF 
  THE 
  SUN. 
  307 
  

  

  p 
  — 
  u 
  = 
  — 
  5-27 
  

   q 
  — 
  v 
  = 
  + 
  0-92 
  

  

  sq. 
  27-77 
  

   sq. 
  0-85 
  

  

  m 
  

  

  28-62 
  

   sq. 
  0-37 
  

  

  

  h'= 
  5-31 
  

  

  

  sq. 
  28-25 
  

  

  

  h 
  = 
  5-40 
  

  

  

  

  

  Diff.= 
  09 
  

  

  

  

  

  

  m. 
  m. 
  

  

  

  4-00 
  

  

  : 
  0-09 
  : 
  

  

  : 
  60 
  : 
  1-3 
  

  

  h. 
  

  

  m. 
  m. 
  h. 
  

  

  m. 
  

  

  

  6 
  

  

  1-4 
  _ 
  1-3 
  = 
  6 
  

  

  0-1 
  = 
  

  

  near 
  approx. 
  time 
  of 
  begin, 
  

  

  h. 
  m. 
  

   T'= 
  8 
  43-4 
  

   p 
  = 
  + 
  12-05, 
  q 
  = 
  + 
  5-60, 
  H 
  = 
  58°-4 
  

   u 
  = 
  + 
  6-54, 
  C 
  = 
  + 
  4-02, 
  c 
  = 
  — 
  1-49, 
  v 
  = 
  + 
  7-42 
  

   p 
  — 
  u 
  = 
  + 
  5-51 
  sq. 
  30-36 
  

  

  q 
  — 
  v 
  — 
  — 
  1-82 
  sq. 
  3-31 
  

  

  m 
  

  

  33-67 
  

   sq. 
  0-37 
  

  

  h'= 
  5-77 
  

   h 
  = 
  5-40 
  

  

  Diff. 
  = 
  0-37 
  

  

  sq. 
  33-30 
  

  

  m. 
  m. 
  

   400 
  : 
  0-37 
  : 
  : 
  60 
  : 
  5-5 
  

   h. 
  m. 
  m. 
  h. 
  m. 
  

  

  8 
  43-4 
  — 
  5-5 
  = 
  8 
  37-9 
  = 
  near 
  approx. 
  time 
  of 
  end. 
  

   h. 
  m. 
  

   At 
  6 
  1-4 
  

   q 
  — 
  v 
  + 
  0-92 
  

  

  ^ 
  = 
  ^5^7 
  --•"*. 
  P- 
  2790-8 
  

   u 
  2-36 
  

  

  V= 
  + 
  8^3 
  = 
  + 
  - 
  273 
  ' 
  Q 
  = 
  15 
  ' 
  2 
  

   V 
  = 
  Q 
  — 
  P 
  = 
  95°-4 
  

  

  If 
  it 
  is 
  required 
  to 
  find 
  the 
  times 
  of 
  beginning 
  and 
  end 
  with 
  greater 
  

   precision 
  than 
  by 
  the 
  foregoing 
  rule, 
  let 
  T" 
  represent 
  the 
  corrected 
  

   Greenwich 
  mean 
  time 
  of 
  beginning, 
  taken 
  to 
  the 
  nearest 
  minute, 
  and 
  

   find 
  from 
  the 
  Nautical 
  Almanac 
  the 
  corresponding 
  sidereal 
  time, 
  ex- 
  

   pressing 
  it 
  in 
  arc. 
  To 
  the 
  sidereal 
  time 
  thus 
  expressed 
  apply 
  the 
  lon- 
  

   gitude 
  of 
  the 
  place, 
  also 
  in 
  arc, 
  by 
  adding, 
  if 
  the 
  longitude 
  is 
  east, 
  but 
  

  

  