The Celestron Nature DX 8x42 binoculars offer clear and bright images, a fast focus knob and a lightweight yet waterproof design. When you purchase through links on our site, we may earn an affiliate ...

Abstract: This communication presents an H-plane substrate integrated waveguide (SIW) horn antenna whose directivity is enhanced using holey unit cells along the horn ...

Abstract: For the electromagnetic (EM) vortex imaging purposes, the sidelobe suppression and the beam collimation method in the generation of orbital angular momentum (OAM) beams is proposed. Based on ...

Turn your phone into a portable planetarium, map the night sky and discover the best place and time to observe February's solar eclipse, with the best stargazing apps.

Take the guesswork out of stargazing with our top smart telescope picks to make exploring the cosmos quick and easy. When you purchase through links on our site, we may earn an affiliate commission.

After years of carrying spotting scopes through dense woodland, over open moorland, and along exposed cliff paths, I’ve come to think of them as more than just equipment. They become trusted ...