Gallium Arsenide and Gallium Nitride are preferred for LEDs, certain photovoltaics, and some very high frequency radio applications.

FORBES: Why Use Silicon?

"Tiny goldcrests, one of our smallest birds, rattled out a shimmering song of a very high frequency that sounded like an out of control sewing machine, " says Chris.

BBC: Llandegla Forest and the black grouse love dance

That shock was really on the very high frequency data that we see for the United States and in this country, was beginning to be overcome by the end of the week and into the weekend.

BBC: News | BREAKFAST WITH FROST | Sir Edward George

These leads will have to be sufficiently short to transmit very high frequency signals, which tend to radiate away as microwaves if the lead is too long (by 2015, chips will work high in the gigahertz band).

ECONOMIST: MONITOR

Quartz watches use very high-frequency oscillations of a crystal, which can be tuned with extreme precision to produce regular signals.

ECONOMIST: A luxury watchmaker is putting silicon in its timepieces

High-frequency trading is very lucrative, as this trial made clear.

FORBES: Ex-Goldman Programmer Convicted (+ the silver lining)

Most high-frequency trading is fundamentally a form of market making with very tight inventory control and very short-lived positions.

FORBES: High Frequency Traders And Current Market Structures Penalize Investors