Thursday 13 March 2008

THE FIRST ANALOGUE PLANETARIUM

The planets.

Where are they?
What time is it for the Jovians?
See at a glance where our planets are.

Where in their orbit around the sun....
Where they are in their own day...
Can be done I think.
Made some sketches years ago.



Disaster!!!!
Pluto is concidered a planet, I never did!

OOOOF, back to 8 planets.

Still need 20!! meters.
Then finally found them.
All 20 of them, all the same.
All in bakelite, exactly what's needed.


They are the indicators.
Drew it all up in a cad system...
Top row: our own time system,
days devided in hours
hours devided in minutes
minutes devided in seconds..
Useful?
Then per planet:
the planetary day, also called sidereal day
And its sidereal year...
That needs some serious slow counting...
146 Earth's years for one on Neptune...
I'll never even see the needle move!