Water
is not always useful as a weight for the scale,
metal
closure of Liquemin ampoules are better
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.
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Left: A syringe must
be full of water like this: Then it holds exactly one millilitre (1 mL).
Photo 2: This scale
is balanced. Its left pan contains 1 mL of water, 5 metal closures of Liquemin
ampoules are on the right pan.
Photo 3: Liquemin
metal closures are exellent weights like 1-Pfennig coins are. You
can also make weights from Cola cans.
Photo 4: This girl
proudly shows that she balanced 1 metal closure on her scale by adding
4 drops of Red Sea water on the left pan.
Right:
After a short time the left scale has lost weight. Water had evaporated
(= left into the air), only solid salt was left.
back......
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last modification: 08.01.2003
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