スミソニアン博物館のインスタグラム(smithsonian) - 11月16日 07時42分

The first person to photograph a single snowflake captured these images.
Wilson A. Bentley used a microscope with his bellows camera—plus years of trial and error—to get a photo of one flake in 1885. (These are all c. 1890.) "Snowflake" Bentley went on to take thousands more, which helped support the belief that no two snowflakes are alike.
In 1903, he sent 500 prints of his snowflakes to the Smithsonian, hoping they might be of interest to our Secretary. The images are now part of @smithsonianarchives. #FirstSnow

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