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Public Clocks In Paisley


Reidy1987

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ps. About the barometer. Well mate, off the top of me head,

Even though we can't feel it, air is constantly pressing down on us with a

tremendous force -- 14.7 lbs. per square inch (100,000 newtons per square

meters), to be exact! This was graphically demonstrated in 1654 when Otto

von Gueicke, Burgmeister of the town of Magdeburg, Germany used a vacuum

pump to remove almost all of the air from the space between two half-meter

diameter hemispheres. The air pressure holding them together was so strong

that two teams of horses couldn't pull them apart; when air was let back in,

the hemispheres fell apart easily.

Air pressure is created by the weight of the earth's atmosphere. Although we

can't see air, the gas molecules still have mass, and gravity acts upon it.

The air pressure changes daily due to the heating and cooling of the earth's

surface. When air gets warm, it expands, becoming less dense, and therefore

pushes with less pressure. We can measure changes in atmospheric pressure by

using a barometer. Some barometers use long glass tubes filled with mercury

inverted in a dish. Air pressing down on the surface of the dish forces the

mercury up the tube. Normal air pressure can support a column of mercury

about 760 mm high. When atmospheric pressure drops, the force of the air

pushing on the dish isn't as great, so the column of liquid falls and we

have a "falling barometer." When the atmospheric pressure increases, the

mercury rises, thus a "rising barometer."

We use air pressure all the time when we breathe. When our diaphragm moves

down, air is pushed into our lungs from the outside, expanding the volume of

the chest cavity. The diaphragm doesn't "pull" air in; it expands the volume

of our lungs, and the air pressure fills the volume.

Hope this clears any questions you had up. :)

Nice one Donga where did you cut n paste that one from?

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Is that a sundial? I thought it was one of those monument things that has arrows pointing in all directions telling you how far away mountains/landmarks etc are?

Doh.

What were you doing up at the carpark in the sky? Too many 'straights' down the Old Largs Rd......................?

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The Old Largs Road!?! :)

I know Paisley reasonably well...went out with One Of Your Kind for a coupla years.

So you went out with Derek Parker of Paisley Express fame and went rambling up the Braes, HOW NICE...............................

Never had you down as a Freemason, mind you................ :lol:

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  • 1 year later...
  • 5 weeks later...

I've found another one.

The new Morrisons at Lonend has a nice big,shiny one :o

The Daftie who puts up all the Xmas lights,next to Spar,in Renfrew

also has a clock on the side of his house.

Don't think that will count though as it's not in Paisley :unsure:

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