Wonderful of Spacer

In order to keep vacuum and withstand atmospheric pressure,
spacers of 0.5mm in diameter and 0.2mm thick are provided
every 2 cm apart.   We thought at first that the force to
the spacer was not as much as we found later,
since the space of vacuum was as few as 0.2mm.


We have then figured out the pressure given to the
spacer has been roughly two (2) tons per square centimeter.
Therefore, the spacer shall be made of a substance
that withstands five (5) tons per square centimeter including
a safety margin.

If you have a pair of polarized lens glasses
(the polarized glasses that fishing enthusiasts usually have),
take a look at SPACIA.


IMAGE
You can observe interference fringes owing to concentric
forcegiven to the glassby the atmospheric pressure around
each spaceras shown on the left.

This shows you the pressure that that the glass is

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