BOOK 2. THE BATH SCHOOL. N. LEVASHOV'S «SVETL BROOM» IN A. KHATYBOV'S «BATH SCHOOL» AND A LABOUR SPADE

Book 2. The Bath School. Chapter 3. Theory and practice in the description of the Object to be taken to the Bath 150 The first relates, as was indicated earlier, to a change in the time of the Earth's motion from apogee to apogee. The second – the Moon, as the observations have shown, tends to change the correction term in time, and this is evident from the table: It was previously indicated that the Moon's orbit with respect to the Earth's orbit has a slope: group angles А: 5 0 18 ’ 58.42 ” – apogee, 5 0 17 ’ 24.84 ” – perihelion; group angles В: 4 0 56 ’ 58.44 ” – apogee, 4 0 58 ’ 01 ” – perihelion However, introducing a correction term, we get different values for the Moon's orbit. The third note –The Moon cycles. As you know, not Julian calendar has 13 months, but if a complete table of optimal days (Easter) is shown, then we see a serious shift, which was not taken into account in the calculations. This shift, expressed in seconds, takes the wanted date far from the optimal point. Glossary 1 Light electromagnetic wave perceived by the eye (4-7.5)·10 14 Hz ( l =400-700 n.m.) 2 Light year The distance traveled by light per year 0.3068 parsec = 9.4605·10 15 m 3 Parsec (ps) The distance from which the average radius of the earth's orbit, perpendicular to the viewing angle, is visible at an angle of 1 second 206265 а. е = 31·10 15 m 4 The diameter of our Galaxy 25000 parsec 5 Radius of the Universe 4·10 26 m 6 Sideric month (S) This is a star month – the period of the Moon's movement in the sky relative to the stars (a complete revolution around the Earth) 27.32166 = 27 days 7 hours 43 min. 7 Sideric Year-T The period of revolution of the earth around the sun 8 The synodic month (P) The Saros cycle, or METON Р = − ST = PT – PS phase change 29.53059413580.. 29 d 12 h 51m 36” 9 The Draconic Month (D) The period of revolution of the moon relative to the nodes of its 27.21222= 27 days 5 hours 5 min