what is a stereostructure?
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Sterostructure is its three-dimensional structure in space. The central P atom has 5 bonding pairs and no lone pairs, so the Cl atoms will be arranged in a trigonal bipyramidal shape, with 90 degrees between the axial and equatorial bonds, and 120 degrees between the equatorial bonds themselves.
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con·fig·u·ra·tion Pronunciation (kn-fgy-rshn)\nn.\n1.\na. Arrangement of parts or elements.\nb. The form, as of a figure, determined by the arrangement of its parts or elements. See Synonyms at form.\n2. Psychology Gestalt.\n3. Chemistry The structural arrangement of atoms in a compound or molecule.\n4. Computer Science\na. The way in which a computer system is set up: changed the configuration by resetting the parameters.\nb. The set of constituent components, such as memory, a hard disk, a monitor, and an operating system, that make up a computer system.\nc. The way that the components of a computer network are connected.
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It's often called an ellipsoid.
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Hertzsprung-Russell  Diagram.  See the wikipedia article for more info.
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One way is by growing a big, pure crystal of the material. Since all the molecules are the same, and the crystal is pure, then all the molecules must fit together a certain way to form the shape of the 'ideal' crystal. \n\nX-ray crystallography, which the previous answerer referred to, is when they shine a thin beam of x-rays through the crystal, to see how they are diffracted. This shows how the crystal is constructed inside.\n\nIn addition to this, if the molecules are large enough, an electron microscope can sometimes see the layers of molecules on the outside of a crystal, or the inner layers if it is split open. \n\nBy using techniques like this, scientist can build up a mental concept of what shape and size the basic units of the crystal must be, the molecules. Then they can make little stick-and-ball shapes that represent the molecules and build up large structures (representing very tiny crystals.) If their predictions are correct, the large shape they build up should resemble the actual crystals, with the same angles and the same shape planes, etc.\n\n19 NOV 06, 1756 hrs, GMT.
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the ability to detect differences in distance using stereoscopic cues that is measured by the smallest difference in the images presented to the two eyes that can be detected reliably
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You can find the general structures through simple web searches.  Remember some of these are polymers and can have different versions based on chain lengths and copolymers.
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the answer above me is correct...i will add that if you look at all of the places around the edges you will see many wedges...even look at the sidewalk cracking on the city street and you will see a microcosm of the macrocosm you speak of in your question..a bunch of the same either zoomed in or out...that idea is commonly called 'fractals'
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Its the primary structure...\nSecondary refers to the arrangement of protein residues in realtion to one another. alpha helix beta strand etc...\nTertiary is the big picture-what these things actaully look like. Quaternary structure is the comming together of of the teriary subunits.
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There are numerou sub-branches, which can basically be classified in "basic" approaches, that is, disciplines that study one aspect of biology throughout the spectre of living beings, and are thus mainly comparative  (i.e. physiology, anatomy, evolution, genetics, biogeography, etc.) and the "systematic" approaches, which focus on a particular group of living beings (taxon) and study all aspects of it (i.e. zoology, botany, mycology, and specific subtaxa within these major ones). \nThis concept is well represented as a cake in which the "layers" are the basic divisions, and the "slices" are the taxons:\nhttp://uts.cc.utexas.edu/~varanus/cake.gif\n\nThis "cake" depicts the more traditional fields; now more and more disciplines are arising, including the interaction with other sciences.\n\nPS. Your question really looks like homework assignment, and if that's the case, this is not what your teacher will be looking for.
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Nope, it's answer A.  The first compound in D has two chlorines on it, not a chiral compound.
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In optics and physics, a wavefront is a line of points (called a locus) having the same phase. For a wave propagating in 3 dimensions, the locus is a surface.
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it is a method to calculate atomic and molecular structure from first principles. the basis is the Schrodinger wave equation. without use of a computer it is a hopeless task.
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The parabolic structure is stronger than a circular strucure or dome.\n\n---Addition---\n\nLet's think in an egg. An egg has two different shapes in each end, one is more rounded like an hemisphere and the other is more like the shape of a paraboloid.\nIf you press the egg from both ends, the egg brakes always \nfrom the more rounded one, the hemisphere looking shape instead of the paraboloid looking end.
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ventricular, particular, spectacular, binocular.
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The keto is in equilibrium with the enol form. In the enol form, the stereogenic carbon assumes sp2 hybridisation and so loses optical activity.
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Depth perception is a phenomnon where the angular difference between the direction your 2 eyes look is interpreted by the brain as a clue to the distance away from an object being viewed.\n\nThis actually only works up to about 5m distance.  Beyond that, the brain uses 'subconcious trigonometry' (comparing the angular field of an object with nearby or familiar fields) to judge distance.