Search results
Results from the WOW.Com Content Network
Poisson spot: predicted by Fresnel's theory of diffraction, named after Poisson, who ridiculed the theory, especially its prediction of the existence of this spot. [33] It is also called the Arago spot as François Arago observed it or the Fresnel bright spot after Augustin-Jean Fresnel 's theory, though it had already been observed by Joseph ...
In 2009, the Arago spot experiment was demonstrated with a supersonic expansion beam of deuterium molecules (an example of neutral matter waves). [24] Material particles behaving like waves is known from quantum mechanics .
Arago spot (1819): Observation of circular diffraction by François Arago, validated a new wave theory of light by Augustin-Jean Fresnel disproving skeptics like Siméon Denis Poisson. Ørsted experiment (1820): Hans Christian Ørsted demonstrates the connection of electricity and magnetism by experiments involving a compass and electric circuits.
Whether or not such mantle plumes exist has been the subject of a major controversy in Earth science, [4] [7] but seismic images consistent with evolving theory now exist. [8] At any place where volcanism is not linked to a constructive or destructive plate margin, the concept of a hotspot has been used to explain its origin.
Water appearing to run uphill at Magnetic Hill in New Brunswick Magnetic Hill in Moncton, Canada. A gravity hill, also known as a magnetic hill, mystery hill, mystery spot, gravity road, or anti-gravity hill, is a place where the layout of the surrounding land produces an illusion, making a slight downhill slope appear to be an uphill slope.
Specular highlights on a pair of spheres. A specular highlight is the bright spot of light that appears on shiny objects when illuminated (for example, see image on right). ). Specular highlights are important in 3D computer graphics, as they provide a strong visual cue for the shape of an object and its location with respect to light sources in the
Science-washing is when a product looks science-based but actually doesn't have the research to back up the claims. A food-industry nutritionist shares 3 tricks companies use to 'science-wash ...
Original source: * Le Maitre, R.W. (ed.); 1989: A classification of igneous rocks and glossary of terms, Blackwell Science, Oxford. A volcanic rock from Italy with a relatively large six-sided phenocryst (diameter about 1 mm) surrounded by a fine-grained groundmass , as seen in thin section under a petrographic microscope