Search

The article focuses on the importance of the team surrounding President Biden, emphasizing that the presidency is not a solo mission and highlighting the significance of his advisers and cabinet in shaping policies and decisions.

Reports on the development of a microscope in Germany that uses a laser light to illuminate an intact specimen one thin layer at a time. Advantages of the microscope in eliminating the need to cut the sample; Details of the microscope's other features.

The article focuses on the intraocular lens (IOL) design concepts developed by Yogesh Gupta and colleagues. According to Gupta, their novel IOL concepts may provide multifocality and can improve reading vision in prebyopic patients following cataract surgery. He added that a variable IOL prototype is based on the fundamental principle of optics. The concepts include one that is composed of two plano convex lenses, and another that is composed of an optical sphere with an air bubble.

The author discusses ongoing research by physicists to make objects appear invisible by manipulating light waves. At Duke University, researchers used metamaterials to bend microwaves around a cylinder, effectively cloaking it to microwave scans. The technology has obvious military applications as well as potential for improved antennas and microscopes.

The article describes the developments in corneal inlay as a treatment for presbyopia. A summary of a three-year study using Kamra corneal inlay to 32 patients is discussed. In undergoing corneal inlay on their nondominant eye, presbyopic patients were able to gain about 2.5 D of depth of field with little effect on their distance vision. The inlay is said to be based on the idea of small-aperture optics.

If you like black-and-white photography and Leica cameras, and have around $8,000 to spare, you might be interested to know that the German optics maker has introduced the newest addition to its M line of cameras: the M Monochrom. The mirrorless Monochrom has a dedicated 18-megapixel image sensor that lacks a color filter array, so you can only shoot 35-millimeter black-and-white photos. But if your inner Scrooge is asking why you should spend eight grand when you can remove color after the fact, one reason is the camera's dedicated sensor, which allows the M Monochrom to pick up more light. That, and the lack of a low-pass filter, helps churn out visibly crisper images than you're bound to get through post-processing. [ABSTRACT FROM AUTHOR]

The author argues that God made light, and discusses photosynthesis, optics, and colors.

The article discusses the results of a study which evaluates visual acuity, stability of postoperative refraction and adverse events related to the phakic AcrySof.

Q.What caused the weird sunset I observed from Cape Cod last month? A well-defined, orange-red, glowing ring surrounded the sun. A. What you saw is a variation of the optical phenomena that can appear when light interacts with the air and the substances in the air, said Todd Miner, a meteorologist at Pennsylvania State University. ''This falls under the category of halo,'' he said. [ABSTRACT FROM PUBLISHER]

red

Focuses on a dispute over painter David Hockney's theory that early Renaissance painters used cameralike devices to paint with perfect perspective. Efforts of Microsoft researchers Antonio Criminisi and computer scientists David Stork to refute Hockney's controversial theory; Discussion of Stork and Criminisi's work, which relies on digital image registration techniques; How the perspective in the chandelier in van Eyck's 1434 painting "Portrait of Arnolfini and His Wife" does not agree with the perspective in photographs of such chandeliers.

Reports that New York-based Corning Inc. has agreed to acquire precision-optics firm Tropel Corp. of Fairmont, New York.

Focuses on negotiations between Nortel Networks and Corning Inc., in which Nortel is attempting to sell its fiber optics components business to Corning. Complications of the plan being discussed, including large expenses; Effects of the deal on both companies, including how it would make Nortel a major shareholder of Corning; Financial information about each company; Outlook for the future.

Discusses the burgeoning field of physics known as optical interferometry, and its applications to astronomy. How the field improves the detail of optical images, by making beams of light interfere; Used to produce detailed picture of the double star Capella, 40 light-years from earth; Diagrams of the process.