Can you chip in? This year we’ve reached an extraordinary milestone: 1 trillion web pages preserved on the Wayback Machine. This makes us the largest public repository of internet history ever ...

Abstract: Herein, a brief review of the axicon lens and spatial light modulators (SLM) components is presented which is used in the transformation of Gaussian beams into non-diffracting Bessel beams.

With Eisenhower’s armies closing in on Hitler’s Reich in the spring of 1945, Allied intelligence experts warned of a last-ditch stand by the Nazis in an Alpine redoubt and of a nationwide ‘Werewolf’ ...