FO

Fo or FO may refer to:

Locations

Science and technology

Military and aviation

People

Apúlia e Fão

Apúlia e Fão is a civil parish in the municipality of Esposende, Portugal. It was formed in 2013 by the merger of the former parishes Apúlia and Fão. The population in 2011 was 7,301, in an area of 16.29 km².

References

Dioxygen difluoride

Dioxygen difluoride is a compound of fluorine and oxygen with the molecular formula O
2F
2. It exists as an orange solid that melts into a red liquid at −163 °C (110 K). It is an extremely strong oxidant and decomposes into oxygen and fluorine even at −160 °C (113 K) at a rate of 4% per day: its lifetime at room temperature is thus extremely short. Dioxygen difluoride reacts with nearly every chemical it encounters – even ordinary ice – leading to its onomatopoeic nickname "FOOF" (a play on its chemical structure).

The material has no practical applications, but has been of theoretical interest. One laboratory's use of it was the synthesis of plutonium hexafluoride at unprecedentedly low temperatures, which was significant because previous methods for its preparation needed temperatures so high that the plutonium hexafluoride created would rapidly decompose.

Preparation

Dioxygen difluoride can be obtained by subjecting a 1:1 mixture of gaseous fluorine and oxygen at low pressure (7–17 mmHg is optimal) to an electric discharge of 25–30 mA at 2.1–2.4 kV. A similar method was used for the first synthesis by Otto Ruff in 1933. Another synthesis involves mixing O
2 and F
2 in a stainless steel vessel cooled to −196 °C (77.1 K), followed by exposing the elements to 6987480652946100000♠3 MeV bremsstrahlung for several hours. A third method requires heating a mix of fluorine and oxygen to 700 °C (1,292 °F), and then rapidly cooling it using liquid oxygen. All of these methods involve synthesis according to the equation:

WF

WF may refer to:

Waffenfabrik Bern

Waffenfabrik Bern (English: Weapon Factory Bern), also known as W+F Bern, was an arms manufacturer in Bern, Switzerland and was a government-owned corporation.

List of W+F weapons

W postcode area

Postcode district boundaries: Bing / Google

The W (Western and Paddington) postcode area, also known as the London W postcode area is a group of postcode districts covering part of central and part of west London, England. The area originates from the Western (W1) and Paddington (W2-14) districts of the London postal district.

Postal administration

The Western district consists of the single original W1 postal district. The area it covers is of very high density development and it has been subdivided into a number of smaller postcode districts. Where districts are used for purposes other than the sorting of mail, such as use as a geographic reference and on street signs, the W1 subdivisions continue to be classed as one 'district'. In June 2000 there was a recoding of the area with the W1M, W1N, W1P, W1R, W1V, W1X and W1Y districts replaced.

The mail centre for W1 is London Central and for W2-14 is Greenford.

Deliveries for W1 (and for WC1 and WC2) came from the Western District Office office on Rathbone Place, until it was decommissioned. This office was a stop on the former London Post Office Railway, which has been mothballed since 2003. The Western District Office was initially located on Wimpole Street, which was also a stop on the London Post Office Railway.

W.F.O. (album)

W.F.O. (Wide Fucking Open) is the seventh full-length album by thrash metal band Overkill, released in July 15, 1994 on Atlantic Records. The album contains "hidden songs" on tracks 97 and 98, featuring the band warming up in the studio, playing "Heaven and Hell" by Black Sabbath, "The Ripper" by Judas Priest and "Voodoo Child (Slight Return)" by Jimi Hendrix. The instrumental song "R.I.P. (Undone)" was written as a tribute to Criss Oliva, co-founder of the band Savatage, who died nine months before the release of the album.

W.F.O. is the last Overkill album released by Atlantic Records, who released their previous five albums, and their last album with guitarists Rob Cannavino and Merritt Gant. W.F.O. and I Hear Black were re-released on Wounded Bird Records in 2005.

Reception

AllMusic's Jason Anderson gave the album a positive review, awarding it four stars out of five and stating, "W.F.O. probably represents the formal beginnings of a '90s commercial swoon for the thrash metal band." Anderson then added, "By the time of this 1994 release, the group's popularity might have been waning a little due to rock fashion trends leaning heavily away from thrash or anything that reminded listeners of the '80s. That's not to say that W.F.O. isn't a fine recording. It is probably one of the band's best, and last, thrash juggernauts."