A Yagi–Uda antenna or simply Yagi antenna, is a directional antenna consisting of two or more parallel resonant antenna elements in an end-fire array; these elements are most often metal rods acting as half-wave dipoles.
invented by Stephanie Kwolek
Kevlar (para-aramid) is a heat-resistant and strong synthetic fiber, related to…
invented by Akira Yoshino John B. Goodenough Rachid Yazami
A lithium-ion battery or Li-ion battery is a type of rechargeable battery in…
invented by CERN
A touchscreen or touch screen is the assembly of both an input (‘touch…
invented by John Ambrose Fleming
A vacuum tube, electron tube, valve (British usage), or tube (North America),…
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