Atto-

Atto- (symbol a) is a unit prefix in the metric system denoting a factor of 10−18 or 0.000000000000000001.

The unit multiple was adopted at the 12th General Conference on Weights and Measures (CGPM) in Resolution 8. It is derived from the Danish word atten, meaning "eighteen".

Examples of its use:

  • Weight of the HIV-1 virus is about 1×10−18 kg or 1×10−15 g, which can be written as 1 fg or 1000 ag.
  • More examples available.
  • The metric system was introduced in 1795 with several metric prefixes, of which, however, only six were adopted as SI prefixes by the 11th CGPM conference in 1960, whereas myria (104) as well as double and demi were not adopted. In 1873, micro and mega were recommended by the British Association for the Advancement of Science. The other dates relate to recognition by a resolution of the CGPM.
  • References

    Atto

    Atto can refer to:

    Science

  • atto-, the SI prefix for a number to the 10−18 power (for example, 1 × 10−18 metre is equal to 1 attometre)
  • ATTO dyes, a family of fluorescent dye molecules
  • People

  • Atto of Pistoia, the Italian prelate
  • Atto of Vercelli, the bishop of Vercelli
  • Atto (bishop of Vic)
  • Atto (archbishop of Milan)
  • Adalbert Atto of Canossa
  • Osman Ali Atto, the Somali warlord
  • Other

  • ATTO Technology, a computer electronics manufacturer
  • The Amazon Tall Tower Observatory
  • Atto (archbishop of Milan)

    Atto (Italian: Attone) was a Cardinal of the Catholic Church who lived in the 11th century.

    Born in Rome son of a noble family as a young man in 1062 he was elected by the chapter of the Milan cathedral Archbishop of Milan, Attone was elected archbishop in front of a papal legate but the decision of the chapter of the cathedral didn't receive the placet of emperor Henry IV so he coundn't be enthroned.Attone was so forced to left Milan and he reached Rome where he lived in the Church of San Marco is title as Cardinal.During his stay in Rome Attone wrote a book about canon law in that book he supported the supremacy of the bishop of Rome over the civil authorities following the teaching of pope Gregory VII. The date of his death is unclear for some author the date of the death is around 1080, others authors identify him as a Cardinal Bishop of Palestrina who dies after 1085 and after to be excommunicated by pope Gregory VII.

    References

    Computer poker players

    Computer poker players are computer programs designed to play the game of poker against human opponents or other computer opponents. They are commonly referred to as pokerbots or just simply bots.

    On the Internet

    These bots or computer programs are used often in online poker situations as either legitimate opponents for humans players or a form of cheating. Whether or not the use of bot constitutes cheating is typically defined by the poker room that hosts the actual poker games. Most (if not all) cardrooms forbid the use of bots although the level of enforcement from site operators varies considerably.

    Player bots

    The subject of player bots and computer assistance, while playing online poker, is very controversial. Player opinion is quite varied when it comes to deciding which types of computer software fall into the category unfair advantage. One of the primary factors in defining a bot is whether or not the computer program can interface with the poker client (in other words, play by itself) without the help of its human operator. Computer programs with this ability are said to have or be an autoplayer and are universally defined to be in the category of bots regardless of how well they play poker.

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