'Nano-origami' reshapes liquid droplets into six-pointed stars

For the first time, researchers in France and Israel have observed how an emulsified liquid droplet can transform from a ...
Nature

From Galen to Golgi: birth of the life sciences in Italy

Between the sixteenth and twentieth centuries, the study of biology was intimately intertwined with progress in medicine. So how, when and where did research into the life sciences begin? You have ...
IEEE

Combining Convex–Concave Decompositions and Linearization Approaches for Solving BMIs, With Application to Static Output Feedback

Abstract: A novel optimization method is proposed to minimize a convex function subject to bilinear matrix inequality (BMI) constraints. The key idea is to decompose the bilinear mapping as a ...
BBC

The lens power equation

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