Frequency standards : basics and applications Of all measurement units frequency is the one that may be determined with the highest degree of accuracy. It equally allows precise measurements of other physical and technical quantities whenever they can be measured in terms of frequency. This volume covers the central methods and techniques relevant for frequency standards developed in physics electronics quantum electronics and statistics. After a review of the basic principles the book looks at the realisation of commonly used components. It then continues with the description and characterisation of important frequency standards fr