Boyle WorkdiariesWorkdiary 19Page 1 of 57
zoom inzoom outrestoren/alastn/anextnotescoversheetimageeditorial

Loading Image

Philosophicall Entrys
&
Memorialls
(Of all sorts,)
Here confusedly throwne together; to be
Hence transferr'd to the Severall Treatises whereto they belong. [space of 6-8 lines]
[Integral marginalia:]
1
London, Augst. the 24th.

The Velocity of an Iron Ball about 2 Inches Diameter being let fall, was found by an accurate Instrument to move 15 1/2 foot in a 2d minute of time. [ 'And 38 foot' deleted]

This Experiment was made & repeated at
the Turret in Chelsy[space of 3 lines]

[Integral marginalia:]
2

We went to the Schooles <at Oxford>[in Boyle hand] & with an exact Instrument where single Vibrations were half seconds, we measur'd the encrease of[altered from '&'] velocity of a descending Ball of Iron fastend by a string to the Instrument, & for the most part our Observations agreed in this That in 4 single Vibrations & [ 'e' deleted]very little more, the Iron fell the height between the Battlements of the Schoole [ '& the' deleted] & the Pavement amounting to [ '35 feet, & letting fall the Iron' deleted] 56, then we shorten'd the String & made it sometimes 36, sometimes 35 feet, & leting fall the Iron we found as we expected, that it fell downe that length in 3 single Vibrations, & when the length was 36 the Pendulum seem'd to begin to be upon the returne. The same Ball let fall from the Tower [of][tear at edge of page] the Schooles where it is 80 foot high appeard to fal[l][tear at edge of page] somewhat less than 5 semiseconds <or perhaps in 4 [ 'half &' deleted]> & a half. And by [the][tear at edge of page]