The bin shed roof (III) or: an egg like a COVID virus?
We had come across tardigrade eggs on the bin shed roof
deposited by the tardigrade Macrobiotus hufelandi.
When looking closer they looked familiar, like something that has been on TV for the past two years, namely
the Corona virus (SARS-CoV-2)
which caused worldwide desperation.
Fig. 1: No -
these are not further images of the Corona virus,
but definitely tardigrade eggs. And there is a remarkable
difference: the eggs shown here have a diameter of roughly 100 micro meters
which is ca. 1000 times more than the diameter of the Corona virus (where
we have typical diameters of about 100 nano meters.
For comparison, please have a look at a
public domain image of the Corona virus:
Fig. 2: This is not
an actual photomicrograph of the Corona virus, but instead a good computer imaging
simulation, shown in the Wikipedia.
Image source: Wikipedia Commons (graphics performed by Felipe Esquivel Reed,
converted to grey scale, as there is no basis for color in this size range, due to physical reasons).
When looking at the internet representations
of the virus it will become obvious that the enemy is too small
to be represented by actual photomicrographs, or at least that
the real electron microscope images are definitely drastically
less attractive than all those computer simulated images.
Some of the virus images even look like like fantasy cakes from a pastry shop
or like extremely colorful knitting work products.
In a few upcoming magazine issues we will illustrate the fact that
the corona virus size is in fact very close to the resolution limit
of the classical light microscope. In theory, this virus might
become visible in a light microscope too, though only as a dot - without
any further structural fineness. This will be demonstrated on the basis
of the Blu-ray disc, the pits and lands of which can be actually resolved
by a classical high-res light microscope (though some scholarly publications
are trying to tell the contrary).
© Text, images and video clips by
Martin Mach (firstname.lastname@example.org).
The Water Bear web base is a licensed and revised version of
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