Millimetre radio waveguide testing. This dielectric waveguide (lower centre) is used to guide and transmit radio waves with a wavelength in the millim

---

Millimetre radio waveguide testing. This dielectric waveguide (lower centre) is used to guide and transmit radio waves with a wavelength in the millimetre band range (EHF, extermely high frequency). Photographed at the National Physical Laboratory, Teddington, UK.

---

Size: 3615px × 4861px
Photo credit: © ANDREW BROOKES, NATIONAL PHYSICAL LABORATORY/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: 21st, adult, apparatus, band, britain, british, caucasian, century, communication, communications, di-electric, dielectric, ehf, engineer, engineering, england, english, equipment, europe, european, experiment, extremely, frequency, high, human, kingdom, lab, laboratory, london, long, male, man, millimeter, millimetre, mmw, npl, people, person, physicist, physics, research, researcher, scientist, technological, technology, teddington, telecommunication, telecommunications, test, testing, uk, united, waveguide, wavelength, white