Each Wasatch Photonics volume phase holographic (VPH) grating produced is an original, with consistent performance from one grating to the next. Our proprietary processes minimize stress, resulting in ...

⁤⁤⁤While you may choose to skip the top sheet for comfort reasons or simply to make your bed-making routine a little easier, one thing is certain: It’s always good to use a fitted sheet. The best ...

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Abstract: Space-modulated diffraction gratings are modelled and analyzed using a zero thickness metasurface grating approach, and demonstrated using numerical examples. The constitutive parameters of ...

We independently review everything we recommend. When you buy through our links, we may earn a commission. Learn more› By Marguerite Preston Marguerite Preston is an editor covering kitchen gear. She ...

This article is a part of CNN Underscored’s Guide to Sleep, a weeklong focus on everything you need to sleep better. We’ll be featuring new products, tips and exclusive deals all week, so check in ...