Abstract

Any physical process has temporary extent and can be realized only in case there is time reserve, necessary for it (a time resource). Physical clocks are the only type of devices by means of which we can measure and carry out experimental studies of a phenomenon of a current of physical time. Process of measurements of time intervals by means of clocks also demands expenses of the appropriate time resource for their work. The vicious circle leading to paradox results: we measure time by means of time. This paradox forms basic restrictions on experimental studies of the course of time as physical phenomenon.

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