synchronize

On Friday, May 31, 2019 at 7:33:56 PM UTC-7, The Starmaker wrote:
Sylvia Else wrote:

On 1/06/2019 2:58 am, The Starmaker wrote:
Sylvia Else wrote:

On 31/05/2019 9:59 am, The Starmaker wrote:
The Starmaker wrote:

If you got one clock
ontop of the mountain, and
one clock on the ground...

is it possible to synchronize
both clocks, or is always
going to be off a little?


Maybe those sundial clocks would be more accurate...

Sundials show local solar time. Even if we ignore effects due to the
Earth's motion around its orbit, the sundial will only match the reading
of an accurate clock at sea level.

If I put a sundial on top of a mountain,
and another sundial on the ground..
they will both measure the correct time
without one going faster and the other going slow.

They show the correct local solar time, by definition.

But if you take a spring, and count its oscillations, you'll find that
number of oscillations that occur within a second of local solar time
depends on where you are.

A mechanical clock is just a modern sundial using
the little hand pointing where the sun's shadow would be.

That may well have been the thinking behind the original clocks with 24
hour dials, but the clock makers could not have succeeded in making
clocks that would stay synchronised with a sun-dial at sea level, and
then, if the clock was taken up a mountain, stay synchronised with a
sun-dial located there.

Sylvia.


i don't understand the diference between a sundial at sea level and the other sundial at mountain level, they both both got the same time.


--
The Starmaker -- To question the unquestionable, ask the unaskable,
to think the unthinkable, mention the unmentionable, and challenge
the unchallengeable.


Oh no. The sun travels faster through the sky at sea level. Just time it with a local clock!

Double-A