Gallery: Trippy Photos Reveal Beauty in Science
Credit: Viktor Sykora; First Faculty of Medicine, Charles University, and Institute of Experimental and Applied Physics, Czech Technical University; Jan Zemlicka, Frantisek Krejci, and Jan Jakubek; Institute of Experimental and Applied Physics, Czech Technical Un
High-resolution high-contrast X-ray radiography of plant seeds combined with images taken by microscopy. The X-ray images were measured using combination of a micro-focus X-ray source and a state-of-the-art hybrid pixel semiconductor detector. The detector enables imaging in so-called single photon counting regime allowing acquiring radiographs with theoretically unlimited dynamic range (in practice limited just by the number of detected photons). In combination with point-like source magnifying geometry, the technique presents a powerful tool allowing nondestructive investigation of mm-sized object of any kind. The results show a novel application of the technique to plant biology, namely the visualization of seeds (typically 3 mm in size). For better interpretation of imaged features, the radiographs are combined with the images taken by microscopy.
Biomineral Single Crystals
Credit: Pupa U.P.A. Gilbert and Christopher E. Killian; University of Wisconsin-Madison
Biomineral crystals found in a sea urchin tooth. Geologic or synthetic mineral crystals usually have flat faces and sharp edges, whereas biomineral crystals can have strikingly uncommon forms that have evolved to enhance function. The image here was captured using environmental scanning electron microscopy and false-colored. Each color highlights a continuous singlecrystal of calcite (CaCO3) made by the sea urchin Arbacia punctulata, at the forming end of one of its teeth. Together, these biomineral crystals fill space, harden the tooth, and toughen it enough to grind rock.
Credit: Kai-hung Fung, Pamela Youde Nethersole Eastern Hospital (Hong Kong)
Evolution encourages diversity, allowing Nature to solve problems in more than one way. This image is a 3D CT scan of a clam and a whelk, both alive. The clam (left) is nestled comfortably in the bottom half of its shell. Note the simplicity of the hinge design in its bivalve shell. By closing the shell rapidly, the clam is able to fence off a potential attack. Yet the whelk’s shell (right) is even more amazing. The sophisticated spiral construction is astonishingly complex and strong, an architectural marvel by itself and an evolutionary success! Once the whelk slipped back into the spiral tunnel of its shell, the shell provides protection similar to a fortress. Both the clam and the whelk solve the vital problem of self defense, albeit in different ways. The whelk however has the upper hand because it has the ability to drill a hole directly through the clam’s shell by softening it with secretions and then consumes the clam as meal.
A Computational Heart
Credit: Guillermo Marin, Fernando Cucchietti, Mariano Vazquez, Carlos Tripiana; Barcelona Supercomputing Center
Here, a screenshot of a video on the complex and fascinating organ – the heart. Scientists hope to simulate the beating heart realistically and in the video they describe a project called Alya Red, aimed at developing a computational cardiac model. The tone of the video is educational, although the renderings are of actual simulation results.
Credit: Fabian de Kok-Mercado, Michael Habib, Tim Phelps, Lydia Gregg, and Philippe Gailloud; Johns Hopkins University School of Medicine
Owls (Order Strigiformes) can perform 270-degree neck rotations. The cervico-cephalic vessels are notoriously sensitive to rotary motion in most vertebrates, including man, in whom injury of these arteries commonly leads to cerebral infarction. This poster was created as part of a Master’s thesis study that examined whether owls have evolved specific arterial adaptations that accommodate their extreme range of neck rotation. The intermediate carotid and vertebral arteries were closely examined from the basi-cervical region up to the formation of the basilar artery using 3D Fusion digital subtraction angiography and traditional dissection techniques. Numerous vascular adaptations were documented that were considered directly related to neck rotation. The study was conducted on 12 deceased owl specimens. None were sacrificed for the purpose of this study. The full study team included Fabian de Kok-Mercado, Michael Habib, Tim Phelps, Lydia Gregg and Philippe Gailloud.
Credit: Eriko Clements, Mark Nielsen, Satoshi Amagai, Bill Pietsch, Davey Thomas, Andy Knoll; The Educational Resources Group, Howard Hughes Medical Institute and Astronaut 3 Media Group
This educational poster shows how geological and biological processes have together shaped Earth’s environment during its 4.6 billion-year history.
In a Mouse’s Eye
Credit: Bryan William Jones, The University of Utah, Moran Eye Center
Here, a winner in last year’s challenge. This computational molecular phenotype image of a mouse’s eye reveals the diversity of cell metabolism in the retina. The optic nerve is in the upper right of the image. The rectus muscles can be seen in red and gold, attached to the green sclera (the white part of the eye). Retinal layers appear in a rainbow of colors from light gold to pink and purple, while other cells show up in blue and green.
Cool as a …
Credit: Robert Rock Belliveau, MD
Another 2011 winner: This 2011 honorable mention photo is the skin of an immature cucumber, magnified 800 times. These structures are called “trichomes,” and they act as little spears, protecting the young vegetable from plant-eaters. The lower part of the trichomes contains bitter, toxic chemicals that make herbivores go “ick!” [See more images from last year’s winners]