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A Lancet review on Handling of Scientific Misconduct in Scandinavian countries gave examples of policy definitions. In Denmark, scientific misconduct is defined as "intention[al] negligence leading to fabrication of the scientific message or a false credit or emphasis given to a scientist", and in Sweden as "intention[al] distortion of the ...
Examples have included the deliberate infection of people with deadly or debilitating diseases, exposing people to biological and chemical weapons, human radiation experiments, injecting people with toxic and radioactive chemicals, surgical experiments, interrogation/torture experiments, tests involving mind-altering substances, and a wide ...
A subject of the Tuskegee syphilis experiment has his blood drawn, c. 1953.. Numerous experiments which were performed on human test subjects in the United States in the past are now considered to have been unethical, because they were performed without the knowledge or informed consent of the test subjects. [1]
A measurement system can be accurate but not precise, precise but not accurate, neither, or both. For example, if an experiment contains a systematic error, then increasing the sample size generally increases precision but does not improve accuracy. The result would be a consistent yet inaccurate string of results from the flawed experiment.
The type of equilibrium defects in non-stoichiometric compounds can vary with attendant variation in bulk properties of the material. [1] Non-stoichiometric compounds also exhibit special electrical or chemical properties because of the defects; for example, when atoms are missing, electrons can move through the solid more rapidly.
Misconceptions (a.k.a. alternative conceptions, alternative frameworks, etc.) are a key issue from constructivism in science education, a major theoretical perspective informing science teaching. [1] A scientific misconception is a false or incorrect understanding of a scientific concept or principle, often resulting from oversimplifications ...
Other research groups were not able to replicate the results and suggested that impurities in the material led to spurious effects mimicking phenomena associated with superconductivity. Copper(I) sulfide , a compound produced in the synthesis process, turned out to be a close match for the claimed properties of LK-99, and pure samples of LK-99 ...
While it is true that increased pressure, such as that exerted by someone standing on a sheet of ice, will lower the melting point of ice, experiments show that the effect is too weak to account for the lowered friction. Materials scientists still debate whether premelting or the heat of friction is the dominant cause of ice's slipperiness ...