スミソニアン博物館のインスタグラム(smithsonian) - 8月18日 05時24分

#ThrowbackThursday to Smithsonian staff demonstrating how to safely view an #eclipse on the National Mall in 1972.
Remember: Do not look at the uneclipsed or partially eclipsed sun through an unfiltered camera, telescope, binoculars or other device. The only way to safely view a partial eclipse is with a safe solar viewer.

Photo from our @smithsonianarchives. #tbt #Eclipse2017

[BIHAKUEN]UVシールド(UVShield)

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