On This Day - Oct 06 : Chemical from Coal Facility
The U.S.A uses coal instead of petroleum to produce acetic anhydride and other acetyl chemicals. These are important building blocks in the synthesis of a number of consumer products including plastics, textiles and photographic film.
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On This Day - Oct 01 : Thalidomide was marketed
This notorious drug was marketed as a mild sleeping pill that was safe even for pregnant women. It wasnβt until 1962 that the severe side effects were revealed, where it had caused the development of malformed limbs in babies.
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On This Day β Sep 30 : Discovery of oxygen
Unfortunately the letter from the Swedish chemist was never acknowledged and Joseph Priestley published the discovery first. Scheele was trounced in the announcement of other discoveries as well. For this reason, Isaac Asimov nicknamed him βhard-luck Scheeleβ.
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On This Day β Sep 29 : CERN was established
The organisation runs the worldβs largest particle physics laboratory in Geneva, Switzerland. In September 2011 CERN scientists reported that some particles appeared to be travelling faster than light, although itβs now thought that the experiment was flawed.
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On This Day β Sep 28 : Metre was defined
One metre was defined as the distance between two lines on a standard bar of an alloy of platinum (Pt) with 10% iridium (Ir), measured at the melting point of ice. The original international prototype of the metre is still kept at the BIPM, Bureau International des Poids et Mesures, in Sèvres, France.
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On This Day β Sep 27 : Ciamician, solar energy
He predicted that humans would one day be able to directly convert sunlight into energy, stored in a βfuelβ as an alternative to fossil fuels. Today, photovoltaic solar panels can produce electricity, but scientists are also working towards other methods of harnessing the sunβs power, such as solar fuels that mimic photosynthesis.
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On This Day β Sep 26 : Biosphere 2
For two years, the eight participants lived in this huge glass and steel structure in the Arizona desert completely closed off from the rest of the world. It also contained 4,000 species of plants, animals and microbes.
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On This Day β Sep 25 : Separation of iron
The method from this English chemist, which used water, ammonia and muriatic acid, was simpler than other popular methods of extracting manganese metal from its ore. Manganese is used in important alloys, and one of its oxides, permanganate, is used in analysis such as redox titrations.
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On This Day β Sep 19 : Chemical structure defined
Chemical structure refers to the way atoms are arranged within molecules. Butlerov realised that chemical compounds are not a random cluster of atoms and functional groups, but structures with definite order.
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On This Day β Sep 13 : Americium was made
This radioactive metal was first produced by B.B. Cunningham and L.B. Werner. Most americium is produced by bombarding uranium (U) or plutonium (Pu) with alpha particles β one tonne of spent nuclear fuel contains about 100 grams of americium. It has few uses other than in smoke alarms.
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