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[32] [33] Meanwhile, research on the chemistry of silicon continued; Friedrich Wöhler discovered the first volatile hydrides of silicon, synthesising trichlorosilane in 1857 and silane itself in 1858, but a detailed investigation of the silanes was only carried out in the early 20th century by Alfred Stock, despite early speculation on the ...
Berzelius is credited with discovering the chemical elements cerium and selenium and with being the first to isolate silicon, thorium, titanium and zirconium. Berzelius discovered cerium in 1803 [29] and selenium in 1817. [30] Berzelius also discovered how to isolate silicon in 1824, [31] and thorium in 1824.
The Danish physicist Valdemar Poulsen creates the world's first magnetic recording and reproduction, using a 1 mm thick steel wire as a magnetizable carrier. Nikola Tesla publicly demonstrated the first wireless remote control of a model ship. 1899: The dog "Nipper" is used in "His Master's Voice", the trademark for gramophones and records.
The two discovered a new element in a molybdenum sample that was used in a cyclotron, the first element to be discovered by synthesis. It had been predicted by Mendeleev in 1871 as eka-manganese. [171] [172] [173] In 1952, Paul W. Merrill found its spectral lines in S-type red giants. [174]
1981 - Isofoton is the first company to mass-produce bifacial solar cells based on developments by Antonio Luque et al. at the Institute of Solar Energy in Madrid. [20] 1982 - The first >10% amorphous silicon thin film solar cell is reported. [21] 1983 - Worldwide photovoltaic production exceeds 21.3 megawatts, and sales exceed $250 million.
The process shoots a focused beam of pure silicon at a silicon chip, removing the unwanted atoms and replacing them with pure silicon. It reduced the amount of the unwanted atoms from 4.5 per cent ...
The fossilized remains of Lucy, discovered on November 24, 1974, made up the most complete skeleton of an early human ancestor when she was found. - Arizona State University CNN: Take us back to ...
In 79 AD, Italy’s Mount Vesuvius exploded, raining ash and volcanic debris down on the city of Pompeii and its tens of thousands of residents. In mere minutes, the giant cloud of ash and gases ...