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PHZPaedagogische Hochschule Zentralschweiz (German: Pedagogical University of Central Switzerland; Lucerne, Switzerland)
PHZPetahertz (10^15 Hertz)
PHZPeople in the Hazard Zone (natural disaster management)
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References in periodicals archive ?
Such a device can work at 1 petahertz, while the processor of today's computer runs slightly faster than at 3 gigahertz.
Currently, metamaterials in the infrared spectrum (300 GHz to 300 terahertz [THz]) and the electrical optical spectrum (>300 THz < 3 petahertz) are not seeing advances.
With the help of new computational techniques brought about by refinements in both hardware and software, don't be surprised to hear of petahertz ([10.sup.15] Hz) and even exahertz ([10.sup.18] Hz) a few years from now.