Objects In Air

Margareta Ingrid Christian unpacks the ways in which, around 1900, art scholars, critics, and choreographers wrote about the artwork as an actual object in real time and space, surrounded and fluently connected to the viewer through the very air we breathe. Theorists such as Aby Warburg, Alois Riegl, Rainer Maria Rilke, and the choreographer Rudolf Laban drew on the science of their time to examine air as the material space surrounding an artwork, establishing its “milieu,” “atmosphere,” or “environment.” Christian explores how the artwork’s external space was seen to work as an aesthetic category in its own right, beginning with Rainer Maria Rilke’s observation that Rodin’s sculpture “exhales an atmosphere” and that Cezanne’s colors create “a calm, silken air” that pervades the empty rooms where the paintings are exhibited. Writers created an early theory of unbounded form that described what Christian calls an artwork’s ecstasis or its ability to stray outside its limits and engender its own space. Objects viewed in this perspective complicate the now-fashionable discourse of empathy aesthetics, the attention to self-projecting subjects, and the idea of the modernist self-contained artwork. For example, Christian invites us to historicize the immersive spatial installations and “environments” that have arisen since the 1960s and to consider their origins in turn-of-the-twentieth-century aesthetics. Throughout this beautifully written work, Christian offers ways for us to rethink entrenched narratives of aesthetics and modernism and to revisit alternatives.

During the 1955 and 1957 Test Operations at the Nevada Test Site (NTS), masses and velocities were determined for more than 20,000 objects, such as glass fragments from windows, stones, steel fragments, and spheres, which were energized by blast winds resulting from nuclear explosions. Following the field tests, a mathematical model was devised to help explain quantitatively the experimental results. This model required certain aerodynamic-drag information in regard to the displaced objects. It was the purpose of the study outlined in this report to determine the necessary drag properties for the objects by means of drop tests. In addition to the objects mentioned above, small laboratory animals, mice, rats, guinea pigs, and rabbits, were used in the drop tests. The data obtained from these tests were ex-trapolated to estimate the drag properties for man, and the results compared favorably with data from other sources. Also a method was developed to estimate the average drag properties of man from his total surface area, assuming that every possible orientation of a straight, rigid man with respect to the wind was equally likely.

Coping with Biological Growth on Stone Heritage Objects: Methods, Products, Applications, and Perspectives offers hands-on guidance for addressing the specific challenges involved in conserving historical monuments, sculptures, archaeological sites, and caves that have been attacked and colonized by micro- and macroorganisms. The volume provides many case studies of removal of biological growth with practical advice for making the right choices. It presents detailed and updated information related to biocides and to alternative substances, features that will be valuable to dealing with these challenges. The author’s goal is to provide access to information and offer the conceptual framework needed to understand complex issues, so that the reader can comprehend the nature of conservation problems and formulate her/his own views. From bacteria to plants, biological agents pose serious risks to the preservation of cultural heritage. In an effort to save heritage objects, buildings, and sites, conservators’ activities aim to arrest, mitigate, and prevent the damages caused by bacteria, algae, fungi, lichens, plants, and birds. Although much has been learned about these problems, information is scattered across meeting proceedings and assorted journals that often are not available to restorers and conservators. This book fills the gap by providing a comprehensive selection and examination of international papers published in the last fifteen years, focusing on the appropriate methods, techniques, and products that are useful for the prevention and removal of micro- and macroorganisms that grow on artificial and natural stone works of art, including wall paintings. Results on new substances with antimicrobic properties and alternative methods for the control of biological growth are presented as well. The book also emphasize issues on bioreceptivity of stones and the factors influencing biological growth and includes an outline of the various organisms able to develop on stones, a discussion on the bioprotection of stones by biofilms and lichens, a review of the main analytical techniques, and a section on bioremediation. This volume will be a valuable reference for cultural heritage conservators and restorers, scientists, and heritage-site staff involved in conservation and maintenance of buildings, archaeological sites, parks, and caves.

An asteroid or comet will inevitably strike the Earth some day, and potentially cause great destruction. This volume considers hazards due to collisions with cosmic objects, particularly in light of recent investigations of impacts by the authors. Each chapter, written by an expert, contains an overview of an aspect and new findings in the field. Coverage describes and numerically estimates the main hazardous effects.