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When and primary
When I came into being, 15 years ago, I had one primary purpose: to help men and women everywhere to know God better, and through knowing Him better to become happier and more effective people.
When the Apple II, PET 2001 and TRS-80 were all released in 1977, all three had BASIC as their primary programming language and operating environment.
When not accomplishing their primary mission, assist the Fire Suppression Team as needed, assist the Medical Triage Team as needed ; other duties as assigned ; communicate with the Team Leader.
When disaggregated, only petroleum and non-petroleum groupings showed different results: a country with relatively low levels of dependence on petroleum exports is at slightly less risk, while a high-level of dependence on oil as an export results in slightly more risk of a civil war than national dependence on another primary commodity.
When domain names are registered with a domain name registrar, their installation at the domain registry of a top level domain requires the assignment of a primary name server and at least one secondary name server.
When a protein is denatured, the secondary and tertiary structures are altered but the peptide bonds of the primary structure between the amino acids are left intact.
When setting up PBXs to run a DPNSS connection one end must be defined as the primary or ' A ' end.
When the cell is being discharged, it behaves like a primary cell, with the anode as the negative and the cathode as the positive electrode.
" When land replaced currency as the primary store of value, the Germanic word * fehu-ôd replaced the Latin word beneficium.
When granite and other similar rocks weather, two primary effects are seen.
When López took office, Asunción had only one primary school.
When a chlorophyll molecule at the core of the photosystem II reaction center obtains sufficient excitation energy from the adjacent antenna pigments, an electron is transferred to the primary electron-acceptor molecule, pheophytin, through a process called photoinduced charge separation.
When the intensities are different, the result is a colorized hue, more or less saturated depending on the difference of the strongest and weakest of the intensities of the primary colors employed.
When one of the components has the strongest intensity, the color is a hue near this primary color ( reddish, greenish, or bluish ), and when two components have the same strongest intensity, then the color is a hue of a secondary color ( a shade of cyan, magenta or yellow ).
When a voltage is applied to the primary winding, a small current flows, driving flux around the magnetic circuit of the core.
When all physical memory is already in use, the paging supervisor must free a page in primary storage to hold the swapped-in page.
When prompted, Harding agreed to run for Burton's seat against his mentor, " Fire Engine " Joe Foraker, in the Republican primary, and he emerged victorious.
When a rock melts, the liquid is a primary melt.
When a company borrows from the primary capital markets, often the purpose is to invest in additional physical capital goods, which will be used to help increase its income.
When companies raises finance from the primary market, the process is more likely to involve face to face meetings than other capital market transactions.
When an ecosystem experiences an increase in nutrients, primary producers reap the benefits first.
When pain is the primary symptom, carpal tunnel syndrome is unlikely to be the source of the symptoms.
When the distinction is made, proper nouns are limited to single words only ( possibly with the ), while proper names include all proper nouns ( in their primary applications ) as well as noun phrases such as United Kingdom, North Carolina, Royal Air Force, and the White House.
When a company lists its securities on a public exchange, the money paid by the investing public for the newly issued shares goes directly to the company ( primary offering ) as well as to any early private investors who opt to sell all or a portion of their holdings ( secondary offering ) as part of the larger IPO.

When and electron
When more electrons are added to a single atom, the additional electrons tend to more evenly fill in a volume of space around the nucleus so that the resulting collection ( sometimes termed the atom ’ s “ electron cloud ” ) tends toward a generally spherical zone of probability describing where the atom ’ s electrons will be found.
When a core electron is removed, leaving a vacancy, an electron from a higher energy level may fall into the vacancy, resulting in a release of energy.
When an electron in an excited molecule or atom descends to a lower energy level, it emits a photon of light equal to the energy difference.
When it emerges from the specimen, the electron beam carries information about the structure of the specimen that is magnified by the objective lens system of the microscope.
When the electron beam interacts with the specimen, it loses energy by a variety of mechanisms.
When sodium ( Na ) and chlorine ( Cl ) are combined, the sodium atoms each lose an electron, forming cations ( Na < sup >+</ sup >), and the chlorine atoms each gain an electron to form anions ( Cl < sup >−</ sup >).
When an electron absorbs energy either from light ( photons ) or heat ( phonons ), it receives that incident quantum of energy.
When an electron is excited from a lower to a higher energy level, it will not stay that way forever.
When such an electron decays without external influence, emitting a photon, that is called " spontaneous emission ".
When a light-emitting diode is forward-biased ( switched on ), electrons are able to recombine with electron holes within the device, releasing energy in the form of photons.
When an electron meets a hole, it falls into a lower energy level, and releases energy in the form of a photon.
When a positron slows down to speeds similar to those of electrons in the material, the positron will annihilate an electron, releasing two gamma photons in the process.
When an X-ray photon collides with an atom, the atom may absorb the energy of the photon and boost an electron to a higher orbital level or if the photon is very energetic, it may knock an electron from the atom altogether, causing the atom to ionize.
When ionizing radiation strikes a semiconductor, it may excite an electron out of its energy level and consequently leave a hole.
When a small bias V is applied to the system, only electronic states very near the Fermi level, within eV ( a product of electron charge and voltage, not to be confused here with electronvolt unit ), are excited.
When the temperature and pressure in the core become sufficient to ignite helium fusion, a helium flash will occur if the core is largely supported by electron degeneracy pressure ( stars under 1. 4 solar mass ).
When an electron absorbs energy either from light ( photons ) or heat ( phonons ), it receives that incident quanta of energy.
When an electron is excited from a lower to a higher energy level, it will not stay that way forever.
When such an electron decays without external influence, emitting a photon, that is called " spontaneous emission ".
When an atom is probed by an external mechanism, such as a photon or a beam of electrons with energies in the range of 2 keV to 50 keV, a core state electron can be removed leaving behind a hole.

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