John Webber

John Webber RA (London 6 October 1751 – 29 May 1793 London) was an English artist who accompanied Captain Cook on his third Pacific expedition. He is best known for his images of Australasia, Hawaii and Alaska.

Biography

Webber was born in London, educated in Bern and studied painting at Paris.

Webber served as official artist on James Cook's third voyage of discovery around the Pacific (1776–80) aboard HMS Resolution. At Adventure Bay in January 1777 he did drawings of "A Man of Van Diemen's Land" and "A Woman of Van Diemen's Land". He also did many drawings of scenes in New Zealand and the South Sea islands. On this voyage, during which Cook lost his life in a fight in Hawaii, Webber became the first European artist to make contact with Hawaii, then called the Sandwich Islands. He made numerous watercolor landscapes of the islands of Kauai and Hawaii, and also portrayed many of the Hawaiian people.

In April 1778, Captain Cook's ships Resolution and Discovery anchored at Ship Cove, now known as Nootka Sound, Vancouver Island, Canada to refit. The crew took observations and recorded encounters with the local people. Webber made watercolour landscapes including "Resolution and Discovery in Ship Cove, 1778". His drawings and paintings were engraved for British Admiralty's account of the expedition, which was published in 1784.

John Webber (politician)

John Webber (1841 – 12 March 1904) was a member of the Queensland Legislative Council.

Webber was born in Kingsbrompton, Somerset, in 1841 to Thomas Webber and his wife Ann (née Burston).

He was a member of the Thargomindah Divisional Board, the Rabbit Board, and from May 1899 till his death a member of the Queensland Legislative Council.

Webber married Henrietta Wells, in 1869 at Wanganella, New South Wales. He died on 12 March 1904, and was buried in Toowong Cemetery but later exhumed for burial elesewhere.

References

HF

HF, Hf or hf can refer to:

Biology

Chemistry

Computing

Technology

Medicine

Organizations and groups

H1F0

H1 histone family, member 0 is a member of the histone family of nuclear proteins which are a component of chromatin. In humans, this protein is encoded by the H1F0 gene.

References

Fluoronium

Fluoronium (systematically named fluoranium, and μ-fluorido-dihydrogen(1+)) is an inorganic cation with the chemical formula H
2F+
(also written [H
2F]+
). It contributes no colour to fluoronium salts. It is a very strong acid, and dilute fluoronium solutions are corrosive and can attack the skin. It can be formed by protonation or self-ionic dissociation of hydrogen fluoride:

or

The fluoronium ion is isoelectronic with water and the amide ion.

Whereas stable organic structures containing other halonium ions have been known since 1970, a fluoronium analog was not known until 2013 and even then only as an unstable short-lived entity.

The kinetic instability of the fluoronium ion is responsible for the extreme acidity of fluoroantimonic acid. The antimony pentafluoride molecule sequesters the fluoride ion produced by the homoassociation of hydrogen fluoride, leaving the fluoronium ion unable to revert to the more stable neutral hydrogen fluoride.

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