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  2. Observer effect (physics) - Wikipedia

    en.wikipedia.org/wiki/Observer_effect_(physics)

    In physics, the observer effect is the disturbance of an observed system by the act of observation. [1] [2] This is often the result of utilising instruments that, by necessity, alter the state of what they measure in some manner. A common example is checking the pressure in an automobile tire, which causes some of the air to escape, thereby ...

  3. Observer's paradox - Wikipedia

    en.wikipedia.org/wiki/Observer's_paradox

    In the field of sociolinguistics, the term Observer’s Paradox was coined by William Labov, who stated with regard to the term: . The aim of linguistic research in the community must be to find out how people talk when they are not being systematically observed; yet we can only obtain this data by systematic observation.

  4. Fieldnotes - Wikipedia

    en.wikipedia.org/wiki/Fieldnotes

    Prior to engaging in qualitative research for the first time, practicing a transcribing format beforehand can improve the likelihood of successful observation. Convert fieldnotes to full notes daily: Prior to discussing one's observations with anyone else, one should set aside time each day to convert fieldnotes. At the very least, any unclear ...

  5. Observational techniques - Wikipedia

    en.wikipedia.org/wiki/Observational_techniques

    Observational research is a method of data collection that has become associated with qualitative research. [1] Compared with quantitative research and experimental research, observational research tends to be less reliable but often more valid [citation needed]. The main advantage of observational research is flexibility.

  6. Physical property - Wikipedia

    en.wikipedia.org/wiki/Physical_property

    An intensive property does not depend on the size or extent of the system, nor on the amount of matter in the object, while an extensive property shows an additive relationship. These classifications are in general only valid in cases when smaller subdivisions of the sample do not interact in some physical or chemical process when combined.

  7. Wheeler's delayed-choice experiment - Wikipedia

    en.wikipedia.org/wiki/Wheeler's_delayed-choice...

    Wheeler's cosmic interferometer uses a distant quasar with two paths to equipment on Earth, one direct and one by gravitational lensing. After [2]. In an attempt to avoid destroying normal ideas of cause and effect, some theoreticians [who?] suggested that information about whether there was or was not a second beam-splitter installed could somehow be transmitted from the end point of the ...

  8. Observation - Wikipedia

    en.wikipedia.org/wiki/Observation

    Observation in the natural sciences [1] is an act or instance of noticing or perceiving [2] and the acquisition of information from a primary source. In living beings, observation employs the senses. In science, observation can also involve the perception and recording of data via the use of scientific instruments. The term may also refer to ...

  9. Empirical research - Wikipedia

    en.wikipedia.org/wiki/Empirical_research

    Empirical research is research using empirical evidence. It is also a way of gaining knowledge by means of direct and indirect observation or experience. Empiricism values some research more than other kinds. Empirical evidence (the record of one's direct observations or experiences) can be analyzed quantitatively or qualitatively.