Definition: An achromatic lens can be defined as a lens which is made by a combination of two different types of lenses carrying different focal powers in a manner such that the images formed by the ...

Abstract: We propose a Risley-prism-based achromatic beam steering metalens antenna to realize large scanning range, wide bandwidth (BW), and low scanning loss. Based on Risley prism and achromatic ...

Persistent Link: https://ieeexplore.ieee.org/servlet/opac?punumber=50 ...

Solaris promises to be a major platform for education and research, with a particular focus on academic research into the Sun and its impact on the Earth.

Explore the night sky with the best telescopes to suit every budget and experience level, perfect for observing February's snow moon and spectacular planetary parade. February is a great time to ...

Definition: Hubble Space Telescope (HST) is a space telescope named after renowned astronomer Edwin Hubble. It was launched in 1990 and is one of the great observatories of NASA. Description: Hubble ...

Celestron AstroMaster 90AZ now $159. This is a good-quality beginner telescope. It features a 90mm objective lens with quality glass optics and a range of accessories which includes a smartphone ...

The AOMEKIE Telescopes 234X Magnification is an unparalleled option for kids. It is equipped with a fully multi-coating 60mm lens for sharper and brighter view; a 5X20 finderscope that delivers erect ...

If it’s time to replace your current lenses, you can skip the in-person visit for a more convenient option. It’s never easier to replace your prescription lenses, you can even do your eye exam ...

Starscope Monocular Telescope: A revolutionary tool for outdoor enthusiasts and nature lovers. It is compatible with all smartphones and comes with high-quality lenses that seem impossible for a cheap ...