NavList:

   

Reply

Frank Reed wrote:

> You could toss something of known size into the  water, maybe a
> styrofoam ball.

Not familiar with this "styrofoam" material - is it maybe derived from
that Unobtainium stuff?...  ;-)

> Measure its angular diameter. Then measure the angle
> to it down from the horizon.

Yabbut.... seems like a bit of circular logic to me - won't I need a
height of eye value here first in order to determine the angle to the
true horizon?

> A little geometry will give the height of  eye.
> Be sure to attach a string to that styrofoam ball so you can fish it
out  --
> wouldn't want to get  ticketed for littering. If anyone asks, you can
tell them
> you're trying to catch styrofoam fish.

Sheesh, LOL..... wouldn't it be easier to just dangle a tape measure
down to the water's edge?  :-)

--
GregR

> You could toss something of known size into the  water, maybe a
> styrofoam
> ball. Measure its angular diameter. Then measure the  angle to it
> down from the
> horizon. A little geometry will give the height of  eye. Be sure to
> attach a
> string to that styrofoam ball so you can fish it out  --wouldn't want
> to get
> ticketed for littering. If anyone asks, you can tell them  you're
> trying to catch
> styrofoam fish.
>
> -FER
> 42.0N 87.7W, or 41.4N  72.1W.
> www.HistoricalAtlas.com/lunars


--~--~---------~--~----~------------~-------~--~----~
To post to this group, send email to NavList@fer3.com
To , send email to NavList-@fer3.com
-~----------~----~----~----~------~----~------~--~---

   

Reply