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Plaster:
Plaster comes from gypsum which is calcium sulphate. The oldest
traces of plaster are 9,000 years old, and were found in Anatolia
and Syria. We also know that 5,000 years ago, the Egyptians burnt
gypsum in open-air fires, then crushed it into powder, and finally
mixed this powder with water to make jointing material for the
blocks of their monuments, such as the magnificent Cheops Pyramid
for example. The ancient Egyptians used models of plaster taken
directly from the human body.
The Greeks
also used gypsum, in particular as window for their temples when
it was of a transparent quality ("selenite gypsum").
The writer Theophraste (372-287 BC) described quite precisely
the fabrication of plaster as it was done at that time in Syria
and Phenicia.
The Romans
cast in plaster many thousands of copies of Greek statues.
Music:
Music has been around since the cave man times. It was found to
be soathing and comforting and the earliest forms of music would
have been using rhythm when sticks were hit together. This is
especially important to us if the rhythm matches our heart beat.
Bridges:
Look up Bridges.
A bridge provides passage over some sort of obstacle: a river,
a valley, a road, a set of railroad tracks.
Sweat:
sweat or perspiration is fluid that comes by the sweat glands
in our skin that contains water, salts, and waste products of
body metabolism such as urea. Our hypothalimus senses that we
are getting too hot and then instructs the sweat glands to start
working. The water when it turns to steam on our skin takes away
with it a lot of heat out of our bodies.
Electricity:
Electricity was first discovered back in ancient times with lightning.
Experiments with lightning only started about 300 years ago.
Who made
God: A very good question! Unfortunately, I do not have the
answer. God has always been here and he is the one that made all
life. A very good question anyway!
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