The phrase "a clock which is" is correct and usable in written English.
It can be used when describing a specific type of clock or its features.
Example: "I bought a clock which is designed to be both functional and decorative."
Alternatives: "a clock that is" or "a clock which has".
Our model uses cellular generations as a biologic clock which is a fundamental variable in determining cellular proliferation and differentiation.
Popularly, the calibration procedure in SS-OCT employs a frequency clock, which is capable of providing a form of f vs. t relationship while the frequency of the source is scanning.
The circadian system comprises a central clock, which is regulated by light and located in a brain region called the suprachiasmatic nucleus (SCN) of the anterior hypothalamus, and peripheral clocks present in metabolic tissues that are entrained by the central clock via feeding/fasting cycles.
Instead, synchronization is only given by steps of a higher clock which is declared outside the parallel statement and visible to both threads.
Anyone who has ever done shift work or a long-haul flight has experienced the disrupted sleep and hunger patterns of a body clock which is out of tune with the rising and setting of the sun.
Our leaders, however, seem to run much more on a "Political Clock," which is all about short-term advantage and sees even 10 years ahead as "way out there".
The measurement itself relies on a 1-bit ADC (i.e. a single voltage comparator), and the digitalization of the sensor's response is achieved by a digital clock, which is very effective in terms of extra-power consumption, silicon area and design time, if monolithically integrated with the sensor.
In analogy, we assume that the phenomena here described of transcriptional dynamics represent a transcriptional clock, which is entrained by the stimulus of the respective transcription factor, such as a ligand in case of nuclear receptors.
Note the rather embarrassing case studies in his speech - the child who loved school so much that she wanted an alarm clock, which is just silly, since she was clearly straight out of a 19th-century potboiler and alarm clocks hadn't been invented then.
The measurement may be in seconds, minutes, hours, etc., based on a conventional clock, or we may be measuring our movement in time on an atomic clock, which is the most accurate type of clock humankind has developed to measure the passage of time.
