XPost: rec.arts.comics.strips   
   From: petertrei@gmail.com   
      
   On 10/16/2025 4:03 PM, William Hyde wrote:   
   > Cryptoengineer wrote:   
   >> On 10/15/2025 4:30 PM, William Hyde wrote:   
   >>> Mark Jackson wrote:   
   >>>> On 10/15/2025 10:34 AM, Scott Dorsey wrote:   
   >>>>> Scott Dorsey  wrote:   
   >>>>>> Paul S Person   wrote:   
   >>>>>>> IIRC, at some point Galileo was in charge of the Pisan   
   >>>>>>> artillery.   
   >>>>>>>   
   >>>>>>> I wonder if he was trying to find out why their "time on target"   
   >>>>>>> computations [1] never worked with Aristotle's view of how   
   >>>>>>> things fell.   
   >>>>>>   
   >>>>>> _Two New Sciences_ has a discussion of this and is well worth   
   >>>>>> reading.  Note that Galileo is thinking throughout of bodies   
   >>>>>> attracted to the earth and never makes that great jump of   
   >>>>>> Newton's.   
   >>>>>   
   >>>>> I take that back.  I thought there was a discussion of time of   
   >>>>> flight but looking it up I find there is not.... it would be   
   >>>>> difficult to do without the calculus I suspect.   
   >>>>   
   >>>> Probably not.  Did they know the muzzle velocity of the devices to   
   >>>> which a given distance/angle table applies?  Then, assuming no   
   >>>> meaningful impact of air resistance:   
   >>>>   
   >>>> time-to-target = distance divided by (muzzle velocity)*cos(angle).   
   >>>>   
   >>> I seem to recall from Aubrey that one of Elizabeth's scholars applied   
   >>> mathematics to gunnery, possibly Dr Dee before he became an occultist.   
   >>>   
   >>> The Parliamentary officer Nathaniel Nye directed cannon in the   
   >>> English civil war and published a book on the mathematics of it in   
   >>> 1647, in which he cited a much earlier Italian mathematician,   
   >>> Tartaliga, who wrote on the subject in 1537.   
   >>>   
   >>> William Hyde   
   >>   
   >> "Time on target" involves firing several projectiles, setting the   
   >> propellent charges, firing times, and elevation of the cannon(s)   
   >> to cause the shells to arrive at the target simultaneously.   
   >>   
   >> I've seen this done using cannon that have liquid propellants   
   >> and computer control. I can't imagine it being done with fixed   
   >> charges, or without computers, save as the result of a careful   
   >> iterative set of firings to zero on on the charges, timing and   
   >> elevations needed.   
   >>   
   >> Please remember that Aubrey makes sh*t up.   
   >   
   > Well, he didn't have much of a BS detector, and never met a good story   
   > he didn't spread, but I wasn't aware that he consciously lied.   
      
   I seen articles where his colorful 'British naval jargon' is shown to   
   lack any contemporary examples.   
      
   pt   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)