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Q FEVER

Infection by micro-organism Coxiella hurnetti; produces a flu-like illness and may cause pneumonia. In rare and serious cases endocarditis occurs.

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Q-BAND

Frequency band mostly in radar, 36- 46 GHz; now superseded by Ka-band. See K-band.

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Q-BANDING

A method of staining chromosomes. See panel on Chromosome

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Q-CODE

Telecommunications code using three letter groups: QAA-QNZ for aeronautics; QOA-QQZ for Maritime uses; QRA-QUZ for all services. Examples: QAH =

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Q-FEEL

A term given because of the use of q = pv2, ie dynamic pressure to a device which applies an artificial force on the control column of a power-controlled aircraft proportional to the aerodynamic loads on the control surfaces, thereby simulating the natural

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Q-GAS

One based on helium 98-2% He, 1-8% butane, widely used in gas-flow counting.

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Q-METER

Laboratory instrument which measures the Q-factor of a component.

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Q-SHELL

The electron shell in an atom corresponding to a principal quantum number of seven. It is the outermost shell for heavy radioactive elements. See panel on Atomic structure

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Q-SIGNAL

In the NTSC colour system, that corres

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Q-SWITCHING

A means of producing high instan

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