Harriot, Thomas - Mss. 6789

4523r

[Commentary:

The page is part of Harriot’s introduction of compound diagrams of motion, a group of folios on which Harriot eventually succeeds in deriving, by means of such diagrams, a general expression for the time of flight of a projectile (Schemmel 2008, Section 8.2). ]

The problem of finding the time of flight of a projectile formulated on the upper part of f. 26 is adequately reformulated in terms of a compound diagram of motion. The result is noted as an equation as well as a proportion. ]

5.) For oblique motions.

Data. â.

m a n

.
â.

m a k

m n

m k

a m

Quaesitum: Ducere lineas

b c

, et

p r

ita vt

a b

p m

sint aequales
et

p y n m

a b c

sit
in ratione, αδ ad δι.
hoc est:

b c

b f

[…]

41 (21r)	42 (21v)
43 (22r)	44 (22v)
45 (23r)	46 (23v)
47 (24r)	48 (24v)
49 (25r)	50 (25v)

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