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On June 10, 1896, Cralle applied for a patent on his invention. He was awarded patent 576,395 on 2 February 1897. [4] The patented "Ice Cream Mold and Disher," was an ice cream scoop with a built-in scraper to allow for one-handed operation. [5] [6] Alfred's functional design is reflected in modern ice cream scoops. [7]
c.1622: Drebbel presents his invention in Rome. 1624: Galileo improves on a compound microscope he sees in Rome and presents his occhiolino to Prince Federico Cesi, founder of the Accademia dei Lincei (in English, The Linceans). 1625: Francesco Stelluti and Federico Cesi publish Apiarium, the first account of observations using a compound ...
Most ice cream scoops are hemispherical-shaped and contain a mechanical device to force the ice cream out of the scoop. The ice cream scoop was invented by African-American Alfred L. Cralle who was issued U.S. patent #576,395 on February 2, 1897. [58] 1897 Charcoal briquette
An optical instrument is a device that processes light waves (or photons), either to enhance an image for viewing or to analyze and determine their characteristic properties. Common examples include periscopes, microscopes, telescopes, and cameras. [1] [2]
View from the Window at Le Gras 1826 or 1827, believed to be the earliest surviving camera photograph. [1] Original (left) and colorized reoriented enhancement (right).. The history of photography began with the discovery of two critical principles: The first is camera obscura image projection; the second is the discovery that some substances are visibly altered by exposure to light. [2]
1857 – In America David Acheson Woodward patents the solar camera, derived from the earlier solar microscope, [14] using sunlight to make enlargements from glass negatives [15] 1861 – James Clerk Maxwell presents a projected additive color image of a multicolored ribbon, the first demonstration of color photography by the three-color method ...
Taking it a step further, the invention of the digital camera meant more people could take photos, but it didn’t replace the need for professional photographers, Still says.
The earliest known examples of compound microscopes, which combine an objective lens near the specimen with an eyepiece to view a real image, appeared in Europe around 1620. [53] The design is very similar to the telescope and, like that device, its inventor is unknown.