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A
crime has been committed, police have a suspect, but how do they
prove guilt?
They need evidence. Like photos of
the highly magnified gunshot fragments.
While forensic science is finding the
photos taken by scanning electron microscopes of vital importance
in solving a case, they are also used by scientists, educators and
commercial industry.
Up till now they've been in black and
white. Or fuzzy colour.
But now with the company Dindima, CSIRO
scientists have developed a software system that colours the minute
details of the images, making the object easier to see and enabling
a better interpretation of the image.
This is a Bryozoa, a marine invertebrate
not big enough for the eye to see. This is the skin of an eggshell.
And this handsome creature is a wood borer.
"In the electron microscope you can acquire back scattered
information or back scattered electrons which give you atomic number
contrast, so every element has a slightly different grey level and
we use the secondary information which gives you the roughness or
texture of the sample. We can assign a colour to a specific grey
level and assign colour to the roughness of the sample of the surface."
A major advantage of this system is
that it doesn't involve extra hardware, the system will be cheaper
and can be run on the average home personal computer.
Being able to see images magnified
up to one million times in colour allows a glimpse into worlds normally
unseen to the human eye.
It provides a fantastic tool in not
only solving crimes, but in helping scientists and industry, while
giving entomologists a closer look at faces that only a mother could
love.
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