ShortCourses- How a Digital Camera Works Digital cameras are very much like all earlier cameras. Beginning with the very first camera all have been basically black boxes with a lens to gather the light, a wheel you turned to focus the image, an aperture that determines how bright the light is, and a shutter that determines how long the light enters. Both the earliest cameras and the most state-of-the-art models available today are really just black boxes. The big difference between traditional film cameras and digital cameras is how they capture the image. Instead of film, digital cameras use a solid-state device called an image sensor. In some digital cameras the image sensor is a charge-coupled device (CCD), while in others it's a CMOS sensor. An image sensor sits against a background enlargement of its square pixels, each capable of capturing one pixel in the final image. It's All Black and White After All It may be surprising, but pixels on an image sensor only capture brightness, not color. There's a Computer in Your Camera
The Museum of Unworkable Devices Physics Gallery Perpetual motion machine inventors do have principles. Unfortunately the physical principles they assume are often ones not obeyed by nature. Let's examine just a few. Anything is possible Inventors assume that since we haven't looked at every part of the universe nor have we looked at all possible mechanisms or phenomena, we can't rule out anything. Those who think this way are much like the child who puts two blocks in a box, closes the box, shakes it, then opens it, hoping to find three blocks inside. The "heavier on one side" seduction. The most naive level of perpetual motion seduction is the notion that if a system has more mass on one side of the axle, then that side must swing downward. We can test its stability by turning the wheel to any position whatever. The earliest unbalanced wheel of Bhaskara underwent countless modifications and embellishments over centuries. The situation is worse than that. The "more weight on one side" distraction. But this isn't a valid test.
Electronics Lab - Home Image Sensors and Signal Processing for Digital Still Cameras Nature by numbers. The theory behind this movie We can find interactive sites on the internet (like this) to draw points, move them, and check how the structure becomes updated in real time. In fact, if we have a series of random dots scattered in the plane, the best way of finding the correct Voronoi Telesación for this set is using the Delaunay triangulation. And in fact, this is precisely the idea shown on the animation: first the Delaunay Triangulation and then, subsequently, the Voronoi Tessellation. But to draw a correct Delaunay Triangulation is necessary to meet the so-called “Delaunay Condition”. Notice that actually, given a certain number of points in the plane there is no single way to draw triangles, there are many. You see that in the graph below, extracted from Wikipedia: También encontraréis sistemas interactivos en la red, como éste, para ir añadiendo puntos, moverlos y comprobar cómo se actualiza la estructura. Podéis verlo en la siguiente gráfica, extraída de la Wikipedia:
Electrical Engineering News, Resources, and Community | EEWeb Single-Sensor Imaging: Methods and Applications for Digital Cameras Welcome - Fritzing Digital Photography Tutorials Learn how to take and edit digital photographs using visual tutorials that emphasize concept over procedure, independent of specific digital camera or lens. This is a complete listing of all tutorials on this site; click the drop-down links in the top menu to see particular topics. Photography is going through an exciting transition period as many film photographers are beginning to explore the new capabilities of digital cameras. While the fundamentals have remained similar, other aspects are markedly different. This is a great time to get involved with digital photography. These tutorials are rarely influenced by changes in image editing software and camera equipment — due to their unique concept-based approach. View in other languages: Português Русский Deutsch Français Italiano
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