|
|
| Line 1: |
Line 1: |
| [[Two New Sciences#The Law of falling bodies|The Law of Falling Bodies]]
| | Hi there. Allow me begin by introducing the writer, her name is Sophia. Office supervising is where my main income arrives from but I've usually wanted my own company. Some time ago he chose to reside in North Carolina and he doesn't plan on changing it. To perform lacross is the factor I adore most of all.<br><br>Also visit my web site [http://kard.dk/?p=24252 online reader] |
| | |
| [[Galileo Galilei|Galileo]] was the first to demonstrate and then formulate the equation for the distance ''d'' traveled by a falling object under the influence of gravity ''g'' for a time ''t'':
| |
| : <math>\ d={gt^2\over 2}</math><br>
| |
| He used a [[wood]] [[Molding (decorative)|molding]], "12 cubits long, half a cubit wide and three finger-breadths thick" as a [[Inclined plane|ramp]] with a straight, smooth, polished [[Groove (engineering)|groove]] to study rolling balls ("a hard, smooth and very round bronze ball"). He lined the groove with "[[parchment]], also smooth and polished as possible". He inclined the ramp at various [[angle]]s, effectively slowing down the acceleration enough so that he could measure the elapsed time. He would let the ball roll a known distance down the ramp, and used a [[water clock]] to measure the time taken to move the known distance; this clock was
| |
| :"a large vessel of water placed in an elevated position; to the bottom of this vessel was soldered a pipe of small diameter giving a thin jet of water, which we collected in a small glass during the time of each descent, whether for the whole length of the channel or for a part of its length; the water thus collected was weighed, after each descent, on a very accurate balance; the differences and ratios of these weights gave us the differences and ratios of the times, and this with such accuracy that although the operation was repeated many, many times, there was no appreciable discrepancy in the results.".
| |
Latest revision as of 17:03, 22 December 2014
Hi there. Allow me begin by introducing the writer, her name is Sophia. Office supervising is where my main income arrives from but I've usually wanted my own company. Some time ago he chose to reside in North Carolina and he doesn't plan on changing it. To perform lacross is the factor I adore most of all.
Also visit my web site online reader