What happened 1879 AD

In 1879, the texture and taste of chocolate were further improved when Rodolphe Lindt invented the conching machine.

The head and arm had been built with assistance from Viollet-le-Duc, who fell ill in 1879. He soon died, leaving no indication of how he intended to transition from the copper skin to his proposed masonry pier.

Swan gave a working demonstration at The Newcastle Chemical Society meeting on 17 January 1879.

The first street in the world to be lit by an incandescent lightbulb was Mosley Street, Newcastle upon Tyne, United Kingdom. It was lit by Joseph Swan's incandescent lamp on 3 February 1879.

Albert Einstein was born in Ulm, in the Kingdom of Württemberg in the German Empire, on 14 March 1879.

In March 1879, Tesla's father went to Maribor to beg his son to return home, but he refused. Nikola suffered a nervous breakdown around the same time.

On 17 April 1879, Milutin Tesla died at the age of 60 after contracting an unspecified illness. During that year, Tesla taught a large class of students in his old school in Gospić.

After many experiments, first with carbon in the early 1880s and then with platinum and other metals, in the end Edison returned to a carbon filament. The first successful test was on 22 October 1879, and lasted 13.5 hours.

Edison continued to improve this design and by 4 November 1879, filed for a US patent for an electric lamp using "a carbon filament or strip coiled and connected ... to platina contact wires." Although the patent described several ways of creating the carbon filament including using "cotton and linen thread, wood splints, papers coiled in various ways," Edison and his team later discovered that a carbonized bamboo filament could last more than 1200 hours.