A low-profile aperture-coupled microstrip patch antenna (MPA) using the TM10 and TM30 resonant modes to enhance the impedance bandwidth is proposed in this paper. Based on the cavity model for a ...

Shutter speed, along with aperture value, is one of the fundamental properties of exposure: ie, how much light your camera gets exposed to. A faster shutter speed helps freeze action, whereas a slower ...

To make the Moon look so large in the background, photographers need to use superzoom telephoto lenses of at least 1,000mm while being positioned a mile or so away from the all-important foreground ...

Reconfigurable intelligent surfaces (RISs) have been regarded as one of the critical technologies for 6G wireless communications. Single-band RISs have received lots of attention in academia and ...

The Celestron NexStar 8SE is the cheapest we've seen it since January — this deal is one to watch during Prime Day.