When thinking about orbitals, we are often given an orbital vision which ( even if it is not spelled out ) is heavily influenced by this Hartree – Fock approximation, which is one way to reduce the complexities of molecular orbital theory.

When they struck atoms in the glass wall, they excited their orbital electrons to higher energy levels, causing them to fluoresce.

When the orbital eccentricities of cubewanos and plutinos are compared, it can be seen that the cubewanos form a clear ' belt ' outside Neptune's orbit, whereas the plutinos approach, or even cross Neptune's orbit.

When orbital inclinations are compared, ' hot ' cubewanos can be easily distinguished by their higher inclinations, as the plutinos typically keep orbits below 20 °.

When atomic orbitals interact, the resulting molecular orbital can be of three types: bonding, antibonding, or nonbonding.

When all densities are multiplied by 4, orbits are the same ; gravitational forces are multiplied by 16 and accelerations by 4, velocities are doubled and orbital periods are halved.

When Pluto was discovered 19 years later, its mean distance of 39. 48 AU and orbital period of 248 Earth years were close to Ketakar's prediction ( Pluto in fact has a 2: 3 resonance with Neptune ).

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 they run out of thruster fuel, the satellites are at the end of their service life as they are no longer able to keep in their allocated orbital position.

When a molecule absorbs a quantum of energy that corresponds to a transition from one molecular orbital to another molecular orbital, the resulting electronic excited state is also properly described as an exciton.

When the binary encountered Neptune, it interacted in such a way that orbital energy was transferred from Triton to its companion ; the latter was expelled, while Triton became bound to Neptune.

When each planet reaches certain values of precession, orbital resonances may cause very large, chaotic changes in obliquity.

When a planet is closer to the Sun it moves faster than when it is further away, so exact determination of the date and time of greatest elongation requires a much more complicated analysis of orbital mechanics.

When the spacecraft has reached its destination orbit, its orbital speed ( and hence its orbital energy ) must be increased again in order to change the elliptic orbit to the larger circular one.

When a molecule cannot be represented by the standard tools of valence bond theory ( promotion, hybridisation, orbital overlap, sigma and π bond formation ) because no single structure predicted by VB can account for all the properties of the molecule, one invokes the concept of resonance.

When excited, an electron moves to a higher energy level / orbital.

When electrons collide with molecules of air in the gap, they excite their orbital electrons to higher energy levels.

When Deke Slayton was withdrawn on medical grounds from Project Mercury's second manned orbital flight ( to be titled Delta 7 ), Carpenter was assigned to replace him.

When a classical particle is weakly coupled to a radiation field, so that the radiative damping can be neglected, it will emit radiation in a pattern which repeats itself every orbital period.

When NHL play resumed for 2005 – 06, Sundin was sidelined in the first game of the season when he was struck in the face with a puck, narrowly missing his eye, but breaking his orbital bone.

When DNAse liberates nucleotides from dsDNA, the bases are no longer stacked as they are in dsDNA, so that orbital overlap is minimized and UV absorbance increases.

When eccentricity is negligible ( the most favourable case for orbital stability ), this becomes

When, therefore, it turned its attention to the concrete entities with which popular imagination had peopled the world of spirit, these entities soon lost whatever status they had enjoyed as actual elements of external reality.

When elements are burned, the products are primarily the most common oxides.

When two distinct elements are chemically combined, with the atoms held together by chemical bonds, the result is termed a chemical compound.

When the human main character, Takeru, argues that humans also have the ability to reproduce and disperse, the higher existence says carbon too easily mingles with other elements and therefore it would be impossible for a carbon-based existence to have evolved on its own.

When the elements of a type character are smaller than a full pixel, ClearType lights only the appropriate subpixels of each full pixel in order to more closely follow the outlines of the character.

When all of the sound, picture, and data elements of a production have been completed, they may be assembled into a Digital Cinema Distribution Master ( DCDM ) which contains all of the digital material needed for projection.

When used to represent carried traffic, a value ( which can be a non-integer such as 43. 5 ) followed by “ erlangs ” represents the average number of concurrent calls carried by the circuits ( or other service-providing elements ), where that average is calculated over some reasonable period of time.

When the formula contains no carbon, all the elements, including hydrogen, are listed alphabetically.

When these regulatory elements control the imprinting of one or more genes, they are known as imprinting control regions ( ICR ).

When elements of the army leadership tried to assassinate Hitler in the July 20 plot shortly thereafter, it was this trio that rallied the resistance to the plotters.

" When concluding about the work, he declared, " The elements of this melody are only the common and well-known ones of English versification ; our author is always felicitous in their management, but no where has he blended them in so perfect a combination as in this instance.

When two or more elements combined to form a compound, their masses are always in a fixed and definite ratio.

When a protostar is formed from the collapse of a giant molecular cloud of gas and dust in the local interstellar medium, the initial composition is homogeneous throughout, consisting of about 70 % hydrogen, 28 % helium and trace amounts of other elements, by mass.

When n ≠ 0, has n elements, and can be written as:

When n = 0, does not have zero elements ; rather, it is isomorphic to, since.

When anti-German demonstrations erupted in Prague, Czechoslovakia, the Comintern ordered the Czech Communist Party to employ all of its strength to paralyze " chauvinist elements.

When beginning her first novel, Shards of Honor, Bujold incorporated these elements, but greatly expanded.

When the elements of A are real numbers, this result becomes rk ( A )

When the elements of are real, the conjugate transpose is the transpose and we obtain.

When the set S has only two elements, the monoid is known as the dyadic monoid.

Authors doubting that decay causes forgetting from short-term memory often offer as an alternative some form of interference: When several elements ( such as digits, words, or pictures ) are held in short-term memory simultaneously, their representations compete with each other for recall, or degrade each other.

When Éamon de Valera led Fianna Fáil to victory in the Irish Free State election of 1932, he began removing the monarchical elements of the constitution, beginning with the Oath of Allegiance.

When Pete Exline told them about the homework in a baggie incident, the Coens thought that that was very Raymond Chandler-esque and decided to integrate elements of the author's fiction into their script.

When the transposable elements lack additional genes, they are known as insertion sequences.

When the Times began, it was unusual among American broadsheets in publishing a full color front page, along with full color front pages in all its sections and color elements throughout.