Today in Tech History – Dec. 25, 2014

In 1741- In Uppsala, Sweden, Anders Celsius first used a Delisle thermometer he had marked up with 100 gradations between boiling and freezing. It was the first use of the centigrade scale of temperature.

In 1959 – Sony announced its first television set, the transistor-based TV-301. It would go on sale in Japan the following May.

In 1990 – Tim Berners-Lee with help from CERN computer scientist Robert Cailliau and others— set up the first successful communication between a Web browser and server via the Internet.

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