The phrase "amateur scientists" refers to people who are passionate about science and conducting experiments, but do not have professional training or work in scientific fields. They pursue science as a hobby or interest. Full definition
While this research enhances our knowledge of ancient ecosystems, it also emphasizes the often - overlooked importance of trace fossils, like footprints, and the work of amateur scientists. (sciencedaily.com)
When priests questioned a scientific theory, which they often did in their capacity as amateur scientists, their scientific skepticism was held up as an example of religious obstruction. (firstthings.com)
Yet he notes that the DIY community faces limitations, because amateur scientists likely would lack the necessary resources. (scientificamerican.com)