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v. t. e. In digital photography, computer-generated imagery, and colorimetry, a greyscale (more common in Commonwealth English) or grayscale (more common in American English) image is one in which the value of each pixel is a single sample representing only an amount of light; that is, it carries only intensity information. Grayscale images, a ...
Chuck Grassley. Charles Ernest Grassley (born September 17, 1933) is an American politician serving as the senior United States senator from Iowa, having held the seat since 1981. Grassley was first elected to the Senate in 1980 and has been reelected seven times. He is the longest-serving Republican in Congressional history and the sixth ...
Smallpox was an infectious disease caused by variola virus (often called smallpox virus), which belongs to the genus Orthopoxvirus. [7] [11] The last naturally occurring case was diagnosed in October 1977, and the World Health Organization (WHO) certified the global eradication of the disease in 1980, [10] making smallpox the only human disease to have been eradicated to date.
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