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US Ambassador to Indonesia Sung Kim accompanied by local officials at the Presidential Palace wearing face masks amid the COVID-19 pandemic. During the COVID-19 pandemic, face masks or coverings, including N95, FFP2, surgical, and cloth masks, have been employed as public and personal health control measures against the spread of SARS-CoV-2, the virus that causes COVID-19.
The so-called 'Mask of Agamemnon', a 16th-century BC mask discovered by Heinrich Schliemann in 1876 at Mycenae, Greece, National Archaeological Museum, Athens The word "mask" appeared in English in the 1530s, from Middle French masque "covering to hide or guard the face", derived in turn from Italian maschera, from Medieval Latin masca "mask, specter, nightmare". [1]
A cloth face mask is a mask made of common textiles, usually cotton, worn over the mouth and nose.When more effective masks are not available, and when physical distancing is impossible, cloth face masks are recommended by public health agencies for disease "source control" in epidemic situations to protect others from virus laden droplets in infected mask wearers' breath, coughs, and sneezes.
In photolithography, several masks are used in turn, each one reproducing a layer of the completed design, and together known as a mask set. A curvilinear photomask has patterns with curves, which is a departure from conventional photomasks which only have patterns that are completely vertical or horizontal, known as manhattan geometry.
A mask can also be created with less technology, by using only a face mask and goggles. [7] One London artist named Zach Blas creates masks using data from many different faces and his company offers a "Facial Weaponization Suite". Another artist, Leo Selvaggio, proposed that a mask with a single person's face could be distributed and it would ...
In 1937, the patterns were field tested by the SS-VT Deutschland regiment, resulting in an estimate that they would cut casualties by fifteen percent. [b] In 1938, a reversible spring/autumn helmet cover, smock, and sniper's face mask in Schick's forest patterns on waterproof cotton duck were patented for the Waffen-SS.