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The American Spirit
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The Art of Plein Air Painting
Spring is the perfect time to go outside and experience the wonders of nature through painting, even if social distancing. Plein air painting, the art of painting outdoors, offers possibilities artists can’t find inside the studio. When painters set up easels outside, they put themselves in direct contact with nature. Responsiveness to the landscape’s changing light, forms, and colors yields work that’s lively and spontaneous. However, plein air painting also poses a set of challenges not encountered in the studio. There are matters of choosing a location, rationing the number of supplies to bring, working within a time limit, adjusting to sudden changes in weather, and possibly even t...
Stephen O'doherty
Biography of Stephen O'Doherty, currently Chief Executive Officer at Christian Schools Australia, previously Chairman (Non-Executive Director) at Hope Media Limited and Chairman (Non-Executive Director) at Hope Media Limited.
Basic Theory in Reflection Seismology
The material in this volume provides the basic theory necessary to understand the principles behind imaging the subsurface of the Earth using reflection and refraction seismology. For reflection seismology, the end product is a "record section" from a collection of "wiggly traces" that are recorded in the field from which information about the properties of subsurface structure and rock can be derived. For the most part, the principles of imaging are the same regardless of the depth to the target; the same mathematical background is necessary for targeting a shallow water table as for investigating the base of the earth's continental "crust" at a depth of 30-50 km.
