The first practical telephone was invented by Alexander Graham Bell. He was awarded the patent for the telephone on March 7, 1876. Bell's invention allowed for the transmission of sound through electrical signals over a wire, enabling voice communication over long distances. The first successful test call was made by Bell to his assistant, Thomas Watson, famously saying, "Mr. Watson, come here, I want to see you."
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Did you know that the most expensive painting sold in history is "Salvator Mundi" by Leonardo da Vinci as of 2021 world record.
It was in the collection of King Charles I of England during the 17th century and was subsequently lost for centuries. In 2005, the painting was identified as an original work by Leonardo da Vinci by art historians, leading to its restoration and authentication.
"Salvator Mundi" was eventually auctioned by Christie's in November 2017, selling for $450.3 million, making it the most expensive painting ever sold at that time. The buyer was later revealed to be Saudi Arabian Crown Prince Mohammed bin Salman. The attribution and authenticity of the painting have been debated among experts, adding to its mystique.
