Depth of focus describes the image location range where the image is clear when focused by an optical system. Outside this range, the image will be significantly blurry. However, within this few millimeter range, the image appears quite sharp. When working with a multiple lens system, it is essential to first calculate the position of the image formed by the first lens. Only after locating the …
Following conflicting desires for an Aztec crown, this book explores the possibilities of repatriation. In The Contested Crown, Khadija von Zinnenburg Carroll meditates on the case of a spectacular feather headdress believed to have belonged to Montezuma, the last emperor of the Aztecs. This crown has long been the center of political and cultural power struggles, and it is one of the most cont…