The leading social network is Facebook with 2.7 billion active users.
In second place is YouTube (2 billion) followed by Instagram (1.15 billion), LinkedIn (766 million), TikTok (689 million), Twitter (330 million), and Snapchat (294 million).
The Piarist Fathers' hospital in Lviv helped Łukasiewicz popularize his invention.
On July 31, 1853, in Lviv, doctor Zaorski, a surgeon, operated on his patient Władysław Holecki. The operation occurred at night in a room lit by one of Ignacy Łukasiewicz's first kerosene lamps.
However, Łukasiewicz did not stop his distillation attempts and finally found the proper fraction, collected at the temperature of 250-350 °C (482 - 662 °F), devoid of light petrols and heavy hydrocarbons.
The resulting kerosene burned very well, so Łukasiewicz decided to use it for lighting rooms.
The first image on the Internet is a work of art made in Photoshop and exported to .gif format.
It depicts four women, members of the Geneva CERN lab’s comedy troupe Les Horrible Cernettes. As with the first website, it was posted by Tim Berners-Lee.
After an unsuccessful first attempt to use kerosene in a structurally unsuitable oil lamp, Łukasiewicz and the tinsmith Bratkowski constructed a prototype kerosene lamp.
This lamp was massive, consisting of a cylindrical tin tank for kerosene. It served as a protection ...
