vs. 7 ] 4 rule for the determination of the length of the Earth's shadow: 6. Multiply the Sun's (true) distance (in y9jaras) by the diameter of the Earth in 19janus and divide by the difference between (the diameters of) the Sun and the Earth. Then is obtained (in.99jaras) the length of the Earth's shadow. That is, length of the Earth's shadow Sun's true distance in 19ja70s x Earth's diameter Sun's diameter - Earth's diameter 61 By “the length of the Earth's shadow” is meant “the distance of the ver A rule for the determination of the diameter of the Earth's shadow at the point where the Moon crosses it, in terms of 7. This (length of the Earth's shadow) diminished by the (true) distance of the Moon and multiplied by the diameter of the Earth and (then) divided by the length of the Earth's shadow gives (in 19jamas) the diameter of the Earth's shadow (at the point where the Moon crosses it). This should be reduced to minutes of arc like (the diameter of) the Moon. That is Diameter of the Earth's shadow (length of Earth's shadow - Moon's true distance) Earth's diameter length of Earth's shadow By “the diameter of the Earth's shadow' we mean “the diameter of the section of the Earth's shadow come where the Moon crosses it at the time of For the Hindu method of deriving the formulae of stanzas 6 and 7, see my notes on MBh, v. 71-73
