The International Atomic Energy Agency (IAEA) has invited Member States to participate in the ConvEx-3 nuclear emergency exercise, scheduled for 14–15 May 2025, in Romania. The exercise, to be held at ...

In a ray diagram, a concave lens is drawn as a vertical line with inward facing arrows to indicate the shape of the lens.

A polygon is regular if it is uniform and its faces are all alike. The regular convex polyhedra are the five Platonic solids, which have been known since classical Greece. The ancient Greek ...

The IAEA invites Member States to participate in the next ConvEx-3, the IAEA's highest level and most complex emergency ...

Besides the regular and semiregular solids, there are just ninety-two other convex polyhedra with regular faces. In 1966, the American mathematician Norman W. Johnson, a student of H.S.M. Coxeter at ...

Concave Convex Mirror has been created for the Alt Material exhibition, part of NGV's Melbourne Design Week 2020. The framework of Concave Convex Mirror is made of mild steel spun over a custom ...

Convex wrote a 9.5% line behind lead Axa XL's 15% on the all-risk reinsurance cover for the Jeju Air jet that crashed at the ...