19 Problems Only Girls Who Wear Glasses Understand. The oils on your cheeks are your greatest enemy. 1. Picking out new glasses is stressful. Choosing The Perfect Pair is so important because the frames you pick will absolutely define you as a person until you get your next pair of glasses.
The observer effect is the effect whereby the observation of a physical phenomenon necessarily affects that phenomenon. In the context of quantum mechanics, the observer effect implies that a measurement of a physical observable of a system forces that system to randomly pick a particular value of that observable from many possible values.
Experimenter Effects. One measurement effect described was the observer effect , a measurement effect produced by the actions or mere presence of an observer. Closely related to this is the concept of an experimenter effect , an effect on subjects due to the actions or presence of an experimenter.