ECOTEST MKS-05 TERRA-P+ Operating Manual page 6

X-ray and gamma radiation is transmitted as energy waves, similar to the
transmission of sunlight and sun warmth. X-ray and gamma radiation have similar
nature. They differ only in their origin and wavelength.
Normally, humans are influenced by X-rays emanated by electronic apparatuses
used in hospitals.
Gamma rays are radiated by unstable radioactive isotopes.
X-ray and gamma radiation is characterized by deep permeability into human
organism, which is dependent on the energy of the rays. Gamma radiation permeability
is so high that it can be hindered only by the thick lead or concrete plates.
Alpha radiation is a flow of nucleuses of helium. It has small permeability and
can be hindered, for example, simply by a piece of paper. Therefore it is not
hazardous until radioactive materials emanating alpha particles get into human
organism either through open wound, or with food and air.
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