Abstract: A star tracker operating inside the atmosphere requires stellar atmospheric refraction (SAR) correction with rapidness, autonomy, and accuracy to promote its attitude determination. To meet ...

Make learning maths fun by playing free online games from BBC Bitesize. All our online maths games are made to help you improve your basic maths skills and solve maths problems. Play our fun Bitesize ...

Filmed in real life work settings, the videos look closely at what a computer consists of; how the various components work; how it processes data, and how it is used in robotics and software ...

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: Owing to the effects of atmospheric refraction, the path of light propagation is bent, making the three-point collinear principle inapplicable and influencing the geometric accuracy of ...

Refraction is the change in the direction of light due to a change in its speed as it enters a different medium. While the speed of light is constant in a vacuum, it decreases in denser materials, ...

Scientists have demonstrated that negative refraction can be achieved using atomic arrays -- without the need for artificially manufactured metamaterials. Scientists have long sought to control light ...

This simple activity asks students to use a fun, oral activity to engage with persuasive thinking and explore how to form a convincing opinion or debate. Introduce students to persuasive vocabulary ...

Refractive errors are common eye issues that can cause blurry or distorted vision. Treatment usually involves wearing glasses or contact lenses or getting procedures ...

The Francis review must ensure the first, instrumental years of secondary school are an opportunity for a rich and varied curriculum The Francis review must ensure the first, instrumental years of ...

If you’ve gathered five Memory Vestige: Light from the enemies you encounter in the Cysts, there’s a good chance you’ve got Memory: Refractions of Light marked on your map. And while the location of ...