Re: C&TSRR Rogers Rock.
| May 30, 2022 10:55AM |
Roger Hogan Wrote:
-------------------------------------------------------
>
> . IMHO
> the weight of a large lens gets heaver the farther
> up the hill you get.
Seems that way but, according to Sir Issac, it actually weighs less. Force goes down with the square of the distance between the centers of mass of two objects. Only a trivially small amount for climbing a hill, or Mt Everest for that matter, but it does go down as you go away from the Center of the Earth.
Hank
ps I knew all those physics classes would come in handy someday!
-------------------------------------------------------
>
> . IMHO
> the weight of a large lens gets heaver the farther
> up the hill you get.
Seems that way but, according to Sir Issac, it actually weighs less. Force goes down with the square of the distance between the centers of mass of two objects. Only a trivially small amount for climbing a hill, or Mt Everest for that matter, but it does go down as you go away from the Center of the Earth.
Hank
ps I knew all those physics classes would come in handy someday!
Sorry, only registered users may post in this forum.
488 stops for water at Los Pinos tank on closing day Oct. 1979. Photo courtesy Don Richter
The NGDF was started by Don Richter and is currently operated in his memory by Nathan Holmes and others. Others who have contributed to the upkeep of this board are (in no particular order): Charles McCandless, Everett Lueck, Ted Wilton, Cole Adams, James Bane, John Moellmer, Jon Bentz, Linn Moedinger, lloyd lehrer, Rod Jensen, John Craft, Steven Forney, Herb Kelsey, Bill Ramaley, Russ Sperry (El Russo Loco), Josh McNeal, John West, Jim Armstrong, Bob Bergstrom, Greg Scholl, Blake Forbes Doug van Veelen and Mark Fuller.