X-ray, is actually describing the ray used, which is X or roentgen ray, named X by the man who discovered it. He called it X because it was unkown. It is a wave of photons. Check out the research -- it is interesting.-ray, is actually describing the ray used, which is X or roentgen ray, named X by the man who discovered it. He called it X because it was unkown. It is a wave of photons. Check out the research -- it is interesting.
1 CALEA Accreditation is a means for developing or improving upon an agencyâs relationship with the community. 2  CALEA Accreditation strengthens an agencyâs accountability, both within the agency and the community, through a continuum of standards that clearly define authority, performance, and responsibilities.
NATA accreditation provides a means of determining, formally recognising and promoting the competence of facilities to perform specific types of testing, inspection, calibration, and other related activities.ATA's accreditation is based on a peer-review process made possible by some 3000 volunteer experts who assist with the assessment of facilities and sit on NATA's various technical committees.