Patinas can provide a protective covering to materials that would otherwise be damaged by corrosion or weathering. On metal, patina is a coating of various chemical compounds such as oxides, carbonates, sulfides, or sulfates formed on the surface during exposure to atmospheric elements (oxygen, rain, acid rain, carbon dioxide, sulfur-bearing compounds), a common example of which is rust which forms on iron or steel when exposed to oxygen.
Patina also refers to accumulated changes in surface texture and colour that result from normal use of an object such as a coin or a piece of furniture over time.
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Sheldon considers dragging random people off the street to try it, but the others suggest he try the experiment on himself.
Penny doesn't believe that Sheldon would answer intimate questions about himself and begs to be involved, assuring him that she won't fall in love with him.
The church was destroyed during the bombing of Dresden in 1945 and then rebuilt 1993-2005 with new material; the stones with the black patina are the parts that survived the firebombing from the original 18th-century church.
on wooden furniture (sheen produced by age, wear, and polishing); or any such acquired change of a surface through age and exposure.Raj thinks that Amy and Leonard are being calm about Penny and Sheldon possibly falling in love. The other halves are not worried and decide to perform the experiment themselves. Howard and Bernadette are still traveling back from his mother's funeral in Florida. Switch to the airport arrivals area and Howard is screaming at the woman behind the desk who claims that the airline has lost the suitcase that contains his mother's ashes (urn) and he demands them back.Question 1: "Given the choice of anyone in the world, who would you like to have dinner with? Amy replies that she'd pick the janitor because she's about to throw up. He wants to know where she misplaced the only woman who ever loved him.Penny and Sheldon conduct an experiment designed to make people instantly fall in love.Leonard, Amy, Raj and Emily visit an escape room, where they have to find an exit while being menaced by a zombie.The word "patina" comes from the Latin for "shallow dish".