[ale] MythTV, older analog cards

[Geoffrey]

Jim Kinney wrote:
> On Fri, Oct 9, 2009 at 6:37 AM, Geoffrey <lists at serioustechnology.com> wrote:
>> Paul Cartwright wrote:
>>> On Thu October 8 2009, Pat Regan wrote:
>>>>> I would NOT want to be holding a pistol that can fire a bullet at
>>>>> 17,500MPH!
>>>> But what if the bullet were really, really tiny?
>>> what hits the ground first, a pound of feathers dropped, or a pound of lead??
>> a pound of lead because of the air friction against the feathers.
> 
> Thus the reason MythBusters used identical .45 caliber bullets.
> The mass of an object does not determine any significant gravitational
> attraction difference until the two object being compared are differ
> in mass on the scale of the mass of the earth. i.e. the moon dropped
> from 1m from the surface of the earth WILL strike the earth sooner
> than a 1kg ball of lead dropped at the same time and height.
> 
> F=Gm1m2/r^2  where F is the force of attraction, G is the
> gravitational constant (6.7x10 ^-11 NM^2/kg^2), m1 and m2 are masses
> of the objects and r is the distance between their centers of mass.
> 
> Since dropping things involves an acceleration caused by the force of
> gravitational attraction, the above relationship shows that a pound of
> lead vs. a pound of feathers will have no difference (barring external
> forces such as wind resistance).

To my point. ;)

> But a MUCH larger object will have an
> impact on the force as the object mass approaches that of the earth
> (5.9x10^24 kg).
>>
>> --
>> Until later, Geoffrey
>>
>> Those who would give up essential Liberty, to purchase a little
>> temporary Safety, deserve neither Liberty nor Safety.
>>  - Benjamin Franklin
>> _______________________________________________
>> Ale mailing list
>> Ale at ale.org
>> http://mail.ale.org/mailman/listinfo/ale
>> See JOBS, ANNOUNCE and SCHOOLS lists at
>> http://mail.ale.org/mailman/listinfo
>>
> 
> 
> 


-- 
Until later, Geoffrey

Those who would give up essential Liberty, to purchase a little
temporary Safety, deserve neither Liberty nor Safety.
  - Benjamin Franklin