1, The full form of EOS is Earth Observing System. It’s used on Academic & Science ,Ocean Science in Worldwide

The Earth Observing System (EOS) is a program of National Aeronautics and Space Administration (NASA) comprising a series of artificial satellite missions and scientific instruments in Earth orbit designed for long-term global observations of the land surface, biosphere, atmosphere, and oceans of the Earth.

2, The full form of EOS is Electro-Optical System. It’s used on Technology ,Imaging & Printing in Worldwide

EOS (Electro-Optical System) is a series of digital SLR camera from Canon. The most prominent feature of the EOS line is automatic focus or autofocus which is executed by a motor drive in the Lens unit, thus communication between camera and lens being completely electronic. The acronym EOS was orginally chosen for Eos, the Greek goddess of light.

3, The full form of EOS is European Optical Society. It’s used on Associations & Organizations ,Animal Welfare in Worldwide

The European Optical Society (EOS) is an organization which serves as the joint forum for all individuals, companies, organisations, educational institutions, and learned and professional societies, who recognise the opportunity and challenge that a common European base provides for the development of optics in its broadest sense.