Searching \ for '[OT] 10,000 year clock project' in subject line. ()
Make payments with PayPal - it's fast, free and secure! Help us get a faster server
FAQ page: www.piclist.com/techref/timers.htm?key=clock
Search entire site for: '10,000 year clock project'.

Exact match. Not showing close matches.
PICList Thread
'[OT] 10,000 year clock project'
2006\01\31@061450 by Jinx

face picon face
Billed as "the world's slowest computer". And a nice piece of
engineering too

Thumbnails page

http://www.longnow.org/projects/clock/prototype1/



2006\01\31@123011 by James Newtons Massmind

face picon face
> Billed as "the world's slowest computer". And a nice piece of
> engineering too
>
> Thumbnails page
>
> http://www.longnow.org/projects/clock/prototype1/


That was very interesting... It's nice to know someone is thinking on that
scale, if only to raise awareness of the real time line.

The site does leave one wanting for technical information about how the
calculating part of the clock works. I saw a thing on the ancient Greek
mechanical clocks and calculators that really left me wanting more detail as
well.

As far as interesting displays go: I personally would like to see something
like this:

A large circular hall that is unlit except for a huge glowing ball in the
center of the room representing the sun. It would not need to be full scale.
Perhaps just a section of the surface of the sun. The idea is to provide a
central light source.

On a track around the outside of the hall a detailed globe of the planet
with accurate topographical and color features is held in a gimbals and
oriented to the sun as the earth is at that instant. It needs to be large
enough that some huge man made features on the surface could just be visible
as a speck in the model. E.g. the area encompassed by the great wall of
China or the tallest skyscrapers or whatever. Laser pointers would highlight
these features as a programmed presentation cycled.

A block of cheese... No, no an accurate topographical globe of the moon
orbits the earth on an arm showing exactly where it is. If we (earthlings)
ever do a moon mission, the track of the craft could be shown as well.

And you can walk between it all and watch the sun set on some part of the
earth and turn and see the phase of the moon and so on just as if you were a
giant that was floating around the planet in space.

---
James.


2006\01\31@124841 by Hazelwood Lyle

flavicon
face

>
> As far as interesting displays go: I personally would like to
> see something
> like this:
>
> A large circular hall that is unlit except for a huge glowing
> ball in the
> center of the room representing the sun. It would not need to
> be full scale.
> edit......

Sounds interesting..
Personally, I have often wondered what a scale model of the Solar System
would look like.. If the Sun were the size of a grapefruit, how big would
the Earth be, and how far away from the grapefruit would the scaled orbit be?
Would be interesting, regardless of how many planets we have in the solar
system.

Lyle

2006\01\31@125558 by Harold Hallikainen

face picon face
Years ago a local elementary school did a "scale model of the universe." I
don't think they scaled the size of the objects, but they did scale the
distance, with planets all over town.

Harold


--
FCC Rules Updated Daily at http://www.hallikainen.com

2006\01\31@130404 by Mike Hord

picon face
The vastness of such a model would be staggering, a monumental
engineering feat in and of itself.

For scale, if you find yourself in the nation's capital sometime, the
south walk along the Mall, beginning near the Air and Space Museum
and ending near the "castle" is a scale model of the solar system.

Most of the planets are dust sized specks, and the distance is still
pretty huge.

http://www.voyageonline.org/

If I ever become truly wealthy, I'll make it happen.

Mike H.

On 1/31/06, James Newtons Massmind <spam_OUTjamesnewtonTakeThisOuTspammassmind.org> wrote:
{Quote hidden}

> -

2006\01\31@130854 by Josh Koffman

face picon face
On 1/31/06, Harold Hallikainen <.....haroldKILLspamspam@spam@hallikainen.com> wrote:
> Years ago a local elementary school did a "scale model of the universe." I
> don't think they scaled the size of the objects, but they did scale the
> distance, with planets all over town.

Here are a couple...I love projects like these!

www.bradley.edu/las/phy/solar_system.html
http://www.efn.org/~jack_v/
http://www.umpi.maine.edu/info/nmms/solar/progress.htm

Josh
--
A common mistake that people make when trying to design something
completely foolproof is to underestimate the ingenuity of complete
fools.
       -Douglas Adams

2006\01\31@135228 by D. Daniel McGlothin

flavicon
face
James,

{Quote hidden}

Sounds like you should have visited my father's 5th grade classroom.  At
ceiling height, he had a sun (basically a spotlight), a circular track from
which hung a standard world globe (which he advanced manually each school
day), and finally a backdrop on the outer edge of the classroom where the
globe's shadow indicated the current day/month.

He maintained it for probably more than 8 years, until he retired.

Daniel


2006\01\31@140918 by Lindy Mayfield

flavicon
face
I saw on tv where Bill Nye the science guy did just that.  He scaled it down and showed what the scale was.  I forget what it was, but from one planet to the other he had to ride his bicycle quite a ways. (-:

{Original Message removed}

2006\01\31@141940 by Peter Todd

picon face
On Wed, Feb 01, 2006 at 12:11:15AM +1300, Jinx wrote:
> Billed as "the world's slowest computer". And a nice piece of
> engineering too
>
> Thumbnails page
>
> http://www.longnow.org/projects/clock/prototype1/

Ahh yes, I've a *big* fan of these guys. Very cool project, I'll be the
first a the visitors center when everything is all setup!

BTW I thought of another option for my rather less abitious 100 year
project... Bistable displays, also known as e-paper. I'm ordering a
dev-kit from Kent Displays and will be experimenting with it soonish.
Sounds a lot easier than huge diode arrays that's for sure. They say the
image is stable indefinetely, and the sales rep thought 10 years is
doable.

I'll give everyone a shout when I have some details and experience with
the stuff.

Thanks for all your help, you specificly, and piclist in general!

--
petespamKILLspampetertodd.ca http://www.petertodd.ca

2006\01\31@152545 by Gerhard Fiedler

picon face
Hazelwood Lyle wrote:

>> As far as interesting displays go: I personally would like to see
>> something like this:
>>
>> A large circular hall that is unlit except for a huge glowing ball in
>> the center of the room representing the sun. It would not need to be
>> full scale. edit......
>
> Sounds interesting.. Personally, I have often wondered what a scale
> model of the Solar System would look like.. If the Sun were the size of
> a grapefruit, how big would the Earth be, and how far away from the
> grapefruit would the scaled orbit be? Would be interesting, regardless
> of how many planets we have in the solar system.

Sun diameter: ~1400 Mm
Sun-Earth distance: ~150,000 Mm
Earth diameter: ~13 Mm
Skyscraper height: ~500 m

(Mm: mega-meter, or 1,000,000 m, or 1,000 km)

Scale Mm to mm (1,000,000,000 : 1) and you get:

Sun diameter: 1.4 m
Sun-Earth distance: 150 m
Earth diameter: 13 mm
Skyscraper height: ~500 nm

That's doable, in a /large/ building :)  But hard to see any skyscrapers at
that scale... hard to see any details on Earth smaller than a continent.

To see the skyscrapers, they'd have to be something like a few mm high.
Let's pick 5 mm for ease of calculation. This gets us a scale of 100,000 :
1:

Sun diameter: 14 km
Sun-Earth distance: 1500 km
Earth diameter: 130 m
Skyscraper height: ~5 mm

Difficult to fit the Earth alone in a building, let alone the rest... Even
if we reduce everything by a factor of 100 (individual countries and the
bigger geographic elements would be visible), the distance to the sun would
still be 15 km. There's a scaling problem somewhere in here :)

Gerhard


PS Don't you just love the ease of a rational unit system? :)

2006\01\31@153645 by Walter Banks

picon face
My eureka moment was when I realized that if the earth were at the center of the sun the moon would be inside the sun as well.

w..

Gerhard Fiedler wrote:

{Quote hidden}


'[OT] 10,000 year clock project'
2006\02\02@074033 by Alan B. Pearce
face picon face
>A block of cheese... No, no an accurate topographical globe of the moon

When the Smart-1 spacecraft was on its way to the moon, some of my
colleagues set up in a tent at a local cheese show with a display about the
DCIXS instrument on it that they had designed ....

More... (looser matching)
- Last day of these posts
- In 2006 , 2007 only
- Today
- New search...