Solna [Sweden], June 7 (ANI): Researchers at Sweden's Karolinska Institute have developed a small sensor for detecting pesticides on fruit. The approach, which was described as a proof-of-concept, uses flame-sprayed silver nanoparticles to boost the chemical signals.
The findings of the research were published in the journal 'Advanced Science'.
Also Read | Rapes of 3 More Minors Reported in Hyderabad After Jubilee Hills Gang-Rape CaseStereoscopy is a technique to trick the brain into perceiving flat images as three-dimensional scenes. Here’s how it works. Each eye is shown a picture of a flat, or two-dimensional, scene. The two pictures are almost identical but show the scene from slightly different angles. When viewing that pair of 2-D pictures together, the brain interprets them as a 3-D scene.
This mimics what the brain does in the real, 3-D world we live in. In everyday life, each of your eyes can perceive only a flat image of what’s in front of you. And because your eyes are separated by a small distance, they each see the world from slightly different angles. (To see this difference, close one eye and then the other. Watch how the objects in front of you appear to shift a tiny bit.)The brain combines the visual input from each eye. In the process, the brain uses the slight differences between those two 2-D images to work out the distances to various objects within the field of view. (Say, for instance, you’re looking at a pencil sitting on your desk. Your eyes get two slightly different 2-D views of that pencil. By comparing those two flat images, your brain can estimate how far away the pencil is.) This is called depth perception. And it works whether your eyes are taking in two slightly different views of the real, 3-D world — or two versions of a 2-D scene displayed on a screen.
This effect is behind much of today’s immersive tech. Virtual reality headsets show slightly different images to each eye to make on-screen images feel real. Stereoscopy has also been used to make 3-D movies. In these films, right-eye and left-eye images are both displayed on screen. Special glasses help show the correct image to each eye. Old-school 3-D glasses did this by letting each eye see only specific colors of light. More sophisticated glasses now show each eye only light waves that wiggle at specific angles. Either way, the brain can assemble the 2-D view through each lens into an image that leaps off the screen.
In a sentence
Stereoscopy tricks the brain into thinking the flat images displayed on virtual reality headsets are 3-D s cenes2-D: Short for two-dimensional. This term is an adjective for something in a flat world, meaning it has features that can be described in only two dimensions — width and length.
3-D: Short for three-dimensional. This term is an adjective for something that has features that can be described in three dimensions — height, width and length.
angle: The space (usually measured in degrees) between two intersecting lines or surfaces at or close to the point where they meet.
lens: (in optics) A curved piece of transparent material (such as glass) that bends incoming light in such a way as to focus it at a particular point in space. Or something, such as gravity, that can mimic some of the light bending attributes of a physical lens.
perception: The state of being aware of something — or the process of becoming aware of something — through use of the senses.
sophisticated: A term for something that is advanced, complex and/or elegant.
virtual: Being almost like something. An object or concept that is virtually real would be almost true or real — but not quite. The term often is used to refer to something that has been modeled by (or accomplished by) a computer using numbers, not by using real-world parts. So a virtual motor would be one that could be seen on a computer screen and tested by computer
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