number, septenary - definitie. Wat is number, septenary
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Wat (wie) is number, septenary - definitie

METER CONSISTING OF SEVEN METRICAL FEET
Septameter; Septenary line

Self number         
A NATURAL NUMBER THAT CANNOT BE WRITTEN AS THE SUM OF ANY OTHER NATURAL NUMBER N AND THE INDIVIDUAL DIGITS OF N
Colombian number; Columbian number; Self-number; Self prime; Devlali number
In number theory, a self number or Devlali number in a given number base b is a natural number that cannot be written as the sum of any other natural number n and the individual digits of n. 20 is a self number (in base 10), because no such combination can be found (all n < 15 give a result less than 20; all other n give a result greater than 20).
Atomic number         
  • An explanation of the superscripts and subscripts seen in atomic number notation. Atomic number is the number of protons, and therefore also the total positive charge, in the atomic nucleus.
  • Russian chemist [[Dmitri Mendeleev]], creator of the periodic table.
  • [[Henry Moseley]] in his lab.
  • [[Niels Bohr]], creator of the [[Bohr model]].
NUMBER OF PROTONS FOUND IN THE NUCLEUS OF AN ATOM
Atom number; Atomic numbers; Atomic Number; Proton number; Z (Atomic number); Z (atomic number); Number of protons; Nuclear charge number

The atomic number or nuclear charge number (symbol Z) of a chemical element is the charge number of an atomic nucleus. For ordinary nuclei, this is equal to the proton number (np) or the number of protons found in the nucleus of every atom of that element. The atomic number can be used to uniquely identify ordinary chemical elements. In an ordinary uncharged atom, the atomic number is also equal to the number of electrons.

For an ordinary atom, the sum of the atomic number Z and the neutron number N gives the atom's atomic mass number A. Since protons and neutrons have approximately the same mass (and the mass of the electrons is negligible for many purposes) and the mass defect of the nucleon binding is always small compared to the nucleon mass, the atomic mass of any atom, when expressed in unified atomic mass units (making a quantity called the "relative isotopic mass"), is within 1% of the whole number A.

Atoms with the same atomic number but different neutron numbers, and hence different mass numbers, are known as isotopes. A little more than three-quarters of naturally occurring elements exist as a mixture of isotopes (see monoisotopic elements), and the average isotopic mass of an isotopic mixture for an element (called the relative atomic mass) in a defined environment on Earth, determines the element's standard atomic weight. Historically, it was these atomic weights of elements (in comparison to hydrogen) that were the quantities measurable by chemists in the 19th century.

The conventional symbol Z comes from the German word Zahl 'number', which, before the modern synthesis of ideas from chemistry and physics, merely denoted an element's numerical place in the periodic table, whose order was then approximately, but not completely, consistent with the order of the elements by atomic weights. Only after 1915, with the suggestion and evidence that this Z number was also the nuclear charge and a physical characteristic of atoms, did the word Atomzahl (and its English equivalent atomic number) come into common use in this context.

atomic number         
  • An explanation of the superscripts and subscripts seen in atomic number notation. Atomic number is the number of protons, and therefore also the total positive charge, in the atomic nucleus.
  • Russian chemist [[Dmitri Mendeleev]], creator of the periodic table.
  • [[Henry Moseley]] in his lab.
  • [[Niels Bohr]], creator of the [[Bohr model]].
NUMBER OF PROTONS FOUND IN THE NUCLEUS OF AN ATOM
Atom number; Atomic numbers; Atomic Number; Proton number; Z (Atomic number); Z (atomic number); Number of protons; Nuclear charge number
¦ noun Chemistry the number of protons in the nucleus of an atom, which is characteristic of a chemical element and determines its place in the periodic table.

Wikipedia

Heptameter

Heptameter is a type of meter where each line of verse contains seven metrical feet. It was used frequently in Classical prosody, and in English, the line was used frequently in narrative poetry since the Romantics. The meter is also called septenary, and this is the most common form for medieval Latin and vernacular verse, including the Ormulum. Its first use in English is possibly the Poema Morale of the twelfth/thirteenth century.

An example from Lord Byron's Youth and Age:

'Tis but as ivy-leaves around the ruin'd turret wreathe,
All green and wildly fresh without, but worn and gray beneath.
O could I feel as I have felt, or be what I have been,
Or weep as I could once have wept o'er many a vanish'd scene,-
As springs in deserts found seem sweet, all brackish though they be,
So midst the wither'd waste of life, those tears would flow to me!

An example from Edgar Allan Poe's Annabel Lee:

It was many and many a year ago, In a kingdom by the sea,
That a maiden there lived whom you may know by the name of Annabel Lee;
And this maiden she lived with no other thought than to love and be loved by me.

An example from Robert W. Service's The Cremation of Sam McGee:

Now Sam | McGee | was from Tenn|essee, | where the co|tton blooms | and blows.(A)
Why he left his home in the South to roam 'round the Pole, God only knows. (A)
He was always cold, but the land of gold seemed to hold him like a spell; (B)
Though he'd often say in his homely way that "he'd sooner live in hell." (B)