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Zoom lenses (sometimes referred to as "true" zoom) are ideally parfocal, in that focus is maintained as the lens is zoomed (i.e., focal length and magnification changed), which is convenient and has the advantage of allowing more accurate focusing at maximal focal length then zooming back to a shorter focal length to compose the image. [1]
A 40x magnification image of cells in a medical smear test taken through an optical microscope using a wet mount technique, placing the specimen on a glass slide and mixing with a salt solution Optical microscopy is used extensively in microelectronics, nanophysics, biotechnology, pharmaceutic research, mineralogy and microbiology.
Lorenz proclaims that synthetic biology is the future of medicine. Mia has a flashback to her childhood, with her brother being rushed into an emergency room. On the PA system, she hears, "Dr. Lorenz to the ER please". After class, Mia pursues Jasper, Lorenz's assistant. After a few dates, he shows Mia his personal lab, located in a cabin in ...
Eye examination with the aid of a slit lamp. Side view of a slit lamp machine. Cataract in human eye: magnified view seen on examination with the slit lamp. In ophthalmology and optometry, a slit lamp is an instrument consisting of a high-intensity light source that can be focused to shine a thin sheet of light into the eye.
On Saturday afternoon, Arizona State left little doubt about who the best team in the Big 12 was during the 2024 college football season. The Sun Devils punctuated an 11-2 regular season with a ...
WASHINGTON (Reuters) -FBI Director Christopher Wray and Homeland Security Secretary Alejandro Mayorkas declined to appear publicly on Thursday before a U.S. Senate committee to discuss national ...
Lake effect snow is slamming the Great Lakes, with seven states from Wisconsin to New York under snow alerts on Monday. So far, snow totals have reached 65 inches in Barnes Corners, New York; 30 ...
A simple zoom lens system. The three lenses of the afocal system are L 1, L 2, L 3 (from left). L 1 and L 2 can move to the left and right, changing the overall focal length of the system (see image below). There are many possible designs for zoom lenses, the most complex ones having upwards of thirty individual lens elements and multiple ...