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Köhler illumination is a method of specimen illumination used for transmitted and reflected light (trans- and epi-illuminated) optical microscopy.Köhler illumination acts to generate an even illumination of the sample and ensures that an image of the illumination source (for example a halogen lamp filament) is not visible in the resulting image.
Phenomenography is a qualitative research methodology, within the interpretivist paradigm, that investigates the qualitatively different ways in which people experience something or think about something. [1] It is an approach to educational research which appeared in publications in the early 1980s.
Thematic analysis is often understood as a method or technique in contrast to most other qualitative analytic approaches – such as grounded theory, discourse analysis, narrative analysis and interpretative phenomenological analysis – which can be described as methodologies or theoretically informed frameworks for research (they specify ...
The history of scientific method considers changes in the methodology of scientific inquiry, not the history of science itself. The development of rules for scientific reasoning has not been straightforward; scientific method has been the subject of intense and recurring debate throughout the history of science, and eminent natural philosophers and scientists have argued for the primacy of ...
The method that is preferable depends on the type of grating to be manufactured. Although polymer optic fibers starting gaining research interest in the 2000s, germanium-doped silica fiber is most commonly used. [24] The germanium-doped fiber is photosensitive, which means that the refractive index of the core changes with exposure to UV light ...
Multimethodology or multimethod research includes the use of more than one method of data collection or research in a research study or set of related studies.Mixed methods research is more specific in that it includes the mixing of qualitative and quantitative data, methods, methodologies, and/or paradigms in a research study or set of related studies.
1950 – Research based on the double blind test is published for the first time, by Greiner et al. [34] 1962 – The American physicist Thomas S. Kuhn publishes his book The Structure of Scientific Revolutions, which controversially challenged powerful and entrenched philosophical assumptions about the progress of science through history. [35]
Ex situ methods, by contrast, examine phenomena or objects outside their original context. The natural sciences frequently implement in situ methodologies. Geological studies employ field analysis of soil composition and rock formations, while environmental science relies on direct ecosystem monitoring to obtain accurate environmental data.