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 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 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 the primary electron beam interacts with the sample, the electrons lose energy by repeated random scattering and absorption within a teardrop-shaped volume of the specimen known as the interaction volume, which extends from less than 100 nm to around 5 µm into the surface.

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.

When a person meets God's requirements for the experience of forgiveness he is forgiven.

" When Peter awakes from his vision, he meets with Cornelius the Centurion, who converts.

When the stale air, warmed from the lungs, is exhaled, it condenses as it meets colder external air.

When Rachel Summers leads a group of X-Men in a fight against Wolverine and the Avengers in Indonesia, Rachel finds Hope, but her mind is drawn to the psychic plane where she meets Professor X.

* John R. Hale, et al., " Questioning the Delphic Oracle: When science meets religion at this ancient Greek site, the two turn out to be on better terms than scholars had originally thought ", in Scientific American August 2003

When he meets her she is washing herself, standing with one foot on either side of the river Unius.

" When Mary meets Jesus, she falls at his feet.

When the Divine Council meets, God informs ha-Satan about Job's blameless, morally upright character.

When Travis meets Betsy to join him for coffee and pie, he reminds her of a line in Kris Kristofferson's song " The Pilgrim, Chapter 33 ": " He's a prophet and a pusher, partly truth, partly fiction — a walking contradiction.

During the temporary absence of the two men, she meets Cecily, each woman indignantly declaring that she is the one engaged to “ Ernest .” When Jack and Algernon reappear, their deceptions are exposed.

When Salieri first meets him, Mozart is crawling around on his hands and knees, engaging in profane talk with his future bride Constanze Weber.

When Nell finally meets King Coyote and defeats him by crashing his systems with malicious coding, he reveals to her that the primer is not entirely a Turing machine, but that there are some real people behind it, such as himself.

In " When You Dish Upon a Star ", Homer meets and befriends Alec Baldwin, Kim Basinger and Howard.

When Uncle Remus returns to the plantation with the children, Sally meets them on the way and is angry at Johnny for not having attended his own birthday party.

" When Bugs finally meets Robin at the end of the film, he is stunned to find that it is Errol Flynn, in a spliced-in clip from this film.

When introduced in the 2011 episode " The Citadel ", Tarkin meets Anakin Skywalker, the future Darth Vader, who rescues him and Jedi Master Even Piell from the titular Citadel.

When she meets the charming Morris Townsend ( Montgomery Clift ), she immediately is taken by the attention that he lavishes upon her, attention she so desperately seeks from her father.

When Pike meets " Eve ", he is so bewildered he constantly trips and falls over himself.

When Isaac meets Mary, her cultural snobbery rubs him the wrong way.

When the Narrator meets the artilleryman the second time, the artilleryman imagines a future where humanity, hiding underground in sewers and tunnels, conducts a guerrilla war, fighting against the Martians for generations to come, and eventually, after learning how to duplicate Martian weapon technology, destroys the invaders and takes back the Earth.

* When Corwin first meets Eric in Nine Princes in Amber, Eric complains " It's true, that uneasy-lies-the-head bit.

When the rear wheel meets that bump a moment later, it does the same in reverse, keeping the car level front to rear.

When Jesse meets Rebecca, they instantly fall in love.

When Billy first meets him, Shazam tells Billy that his name is an acronym for six ancient heroes.