\(power \ of \ a \ lens \ (D) = \frac{1}{focal \ length \ (m)}\) A lens has a power of -3.33 dioptres. Calculate the focal length and state what type of lens it is.

Koilonychia, or "spoon nails," is a condition in which your nails develop a concave shape that makes them look like a spoon. Health conditions, such as iron deficiency or celiac disease, can lead to ...

The volume contains a practical worksheet for preliminary screening of capacities and a screening tool for undue influence. Multiple appendices provide an overview of psychological testing instruments ...

Effective public communication was the focus of a recent IAEA ConvEx-2 exercise based on a nuclear power plant (NPP) accident scenario. This exercise was hosted by the National Crisis Centre of ...

Abstract: In this paper, we propose a model predictive control (MPC) algorithm using sequential convex programming (SCP) to address concave inequality constraints. Based on traditional SCP, we ...

Quadrupole magnets are like lenses that are convex (focusing) in one transverse plane and concave (defocusing) in the other, transporting charged particles like beams of light on an optician’s bench.

[News] CoACD adds "auto" pre-processing mode, which produces better results for manifold meshes! Approximate convex decomposition enables efficient geometry processing algorithms specifically designed ...