Category: Knowledge
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Blurry images…
The ghost imaging technique forms an image by correlating a beam that interacts with the object and a reference beam that does not. Individually, the beams don't carry any meaningful information about the object. The imaging technique works with visible light, x-rays and other parts of the electromagnetic spectrum and, when the structured light beams…
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Learning new words…
Children may learn new words better when they learn them in the context of other words they are just learning - according to research from the University of East Anglia. Eighty two children took part in the study. In two experiments the team taught them some new words for things they couldn't name - such…
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Artificial leaves… True gas… Artificial beings… True existence…
A widely-used gas that is currently produced from fossil fuels can instead be made by an 'artificial leaf' that uses only sunlight, carbon dioxide and water, and which could eventually be used to develop a sustainable liquid fuel alternative to gasoline. (1) What is natural? What is artificial? In a cosmos without definitions, something extraordinary…
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Cosmic-scale magnetic fields. Scientific models’ dirty little secrets…
While researchers have believed for some time that magnetic fields of femto-Gauss strength extend to the largest scales in the universe -- to scales larger than the largest clusters of galaxies -- it is an unresolved mystery how such magnetic fields can have been created in the early universe. One logical possibility is that the…
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Hunger…
Researchers discovers how hunger might make food tastier: Using optogenetic and chemogenetic techniques, researchers have identified brain circuits underlying hunger-induced changes in the preferences for sweet and aversive tastes in mice. These circuits involved Agouti-related peptide-expressing neurons, which projected to glutamate neurons in the lateral hypothalamus. From there, glutamate neurons projecting to the lateral septum…
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