![European Physical Society logo.](https://cms.iopscience.org/a1c88afa-7c3d-11e2-a6c4-7979bdb62203/eps-logo2.gif?guest=true)
The European Physical Society (EPS) is a not for profit association whose members include 41 National Physical Societies in Europe, individuals from all fields of physics, and European research institutions.
As a learned society, the EPS engages in activities that strengthen ties among the physicists in Europe. As a federation of National Physical Societies, the EPS studies issues of concern to all European countries relating to physics research, science policy and education.
![The Institute of Physics logo.](https://cms.iopscience.org/ce5b14ab-f0f4-11e5-a415-496188f8a415/iop.gif?guest=true)
The Institute of Physics (IOP) is a leading scientific society promoting physics and bringing physicists together for the benefit of all. It has a worldwide membership of around 50 000 comprising physicists from all sectors, as well as those with an interest in physics. It works to advance physics research, application and education; and engages with policy makers and the public to develop awareness and understanding of physics. Its publishing company, IOP Publishing, is a world leader in professional scientific communications.