Researchers in Spain reviewed six models used to calculate incidence angle modifier (IAM) losses in photovoltaic systems. They identified the Martín-Ruiz model as the most comprehensive, as it ...

Optical illusions are challenging puzzles, created in a way that exploits how our visual system sees the world. These puzzles often lead to perceptions that differ from reality. Optical illusions come ...

A surveyor says he has discovered a new Colorado 14er after hauling GPS equipment to the top two peaks in the Sangre de Cristo Mountains. No, Eric Gilbertson did not suddenly locate a new 14,000-foot ...

A strong brand supports Coca-Cola's consistent pricing power over time. The company has increased its dividend payout for an impressive 63 straight years. Buying the stock might only make sense for ...

At first glance, it’s just a little girl standing before a mirror. But look again, and you’ll notice something unsettlingly beautiful. The mirror reflects her endlessly, one image after another, ...

At first glance, this optical illusion seems simple: two men positioned around a white platform, one in red and one in grey. But as you look closer, your mind begins to twist the image, who’s really ...

Activity 1: Anglo-Saxon village Activity 2: Quiz - Who were the Anglo-Saxons? Well let’s start at the beginning. The Anglo-Saxon age in Britain was about 410 to 1066 and they originally come from ...

There are four levels to play, each divided into three stages. You start by learning the home row keys. Each stage builds on previous lessons, introducing new letters as you progress and giving you ...