In an ideal case, optical rays refracting through a spherical lens can be made to converge at a single point known as the focal point. However, in practice, rays fail to converge at a single point and ...

Please provide your email address to receive an email when new articles are posted on . Wavefront aberrometry plus corneal topography or tomography are ideal entry testing tools for higher-order ...

MAY I correct an obvious mistake of mine which I notice in my letter on spherical aberration appearing in NATURE of December 9?. The second expression for intensity should read: ...

Rich Halley is a tenor saxophonist and composer based in Portland, Oregon. He is known for his fiery playing and imaginative compositions. Rich has released 26 critically acclaimed recordings as a ...

Considering patients' spherical aberrations may allow a better contact lens-wearing experience for patients with presbyopia. Wearing multifocal contact lenses alters spherical aberration and visual ...

Scientific American is part of Springer Nature, which owns or has commercial relations with thousands of scientific publications (many of them can be found at www ...

This year, the electron microscopy community marks the 25 th anniversary of the release of the first aberration-corrected transmission electron microscope. To celebrate the occasion, this article ...

The Ritchey-Chrétien (RC) telescope is a specialized reflecting telescope within the Cassegrain optical system, developed by George Ritchey and Henri Chrétien in 1910. Known as the “RC Telescope,” ...

Spherical aberration in axial-symmetric magnetic focusing lenses results in S-shape figure of beam emittance. Filamentation of beam emittance in phase space is a fundamental property of a beam ...