Founded in 2003, California-based eyewear retailer Zenni Optical offers more than 4,000 glasses and sunglasses designs, along with a range of lenses tailored to meet specialized needs. While some ...

This article is part of CNN Underscored’s Guide to Coffee, a two-week focus on everything coffee, from the best methods for brewing it to the best machines to do so and the accessories and gear you ...

The idea of optical computing—the use of photons instead of electrons to perform computational operations—has been around for decades. However, interest has resurged in recent years; the potential for ...

A study of mice starts to unravel how the brain gets tricked by this kind of optical illusion, and it gives clues about how visual perception works. When you purchase through links on our site, we may ...

The bistable load switch is made on two comparators. The load is switched on and off sequentially by applying a voltage of two different levels to the input of the device. Earlier in [1], a new class ...

Optical coherence tomography (OCT) is a type of noninvasive imaging test. Ophthalmologists use OCT to create high-resolution, cross-sectional images of the inside of a person’s eye. OCT can help an ...

WASHINGTON — The National Reconnaissance Office announced Dec. 5 it has signed agreements with five commercial providers of electro-optical satellite imagery, including four startups that are just ...

How optical illusions work has been long-debated among scientists and philosophers, who wonder whether these illusions stem from neural processing in the eye or involve higher-level cognitive ...

The diagrams of two simple balance-bridge devices are given, which allow for the comparing of two inductances with high accuracy. An LED indicator, or high-impedance telephone headphones, are used as ...