where does the clinking of glasses come from
Toast (honor) According to various apocryphal stories, the custom of touching glasses evolved from concerns about poisoning. By one account, clinking glasses together would cause each drink to spill over into the others' (though there is no real evidence for such an origin).[2] According to other stories, the word toast became associated with the custom in the 17th century, based on a custom of flavoring drinks with spiced toast. The word originally referred to the lady in whose honor the drink was proposed, her name being seen as figuratively flavoring the drink.[3][4] The International Handbook on Alcohol and Culture says toasting "is probably a secular vestige of ancient sacrificial libations in which a sacred liquid was offered to the gods: blood or wine in exchange for a wish, a prayer summarized in the words 'long life!' or 'to your health!'"[5]
Contact lens In 1888, German ophthalmologist Adolf Gaston Eugen Fick constructed and fitted the first successful contact lens.[11] While working in Zürich, he described fabricating afocal scleral contact shells, which rested on the less sensitive rim of tissue around the cornea, and experimentally fitting them; initially on rabbits, then on himself, and lastly on a small group of volunteers. These lenses were made from heavy blown glass and were 18–21 mm (0.71–0.83 in) in diameter. Fick filled the empty space between cornea and glass with a dextrose solution. He published his work, "Contactbrille", in the journal Archiv für Augenheilkunde in March 1888.