After Bohr's use of Einstein's explanation of the photoelectric effect to relate energy levels in atoms with the wavelength of emitted light, the connection between the structure of electrons in atoms and the emission and absorption spectra of atoms became an increasingly useful tool in the understanding of electrons in atoms.

After its initial expansion from a singularity, the Universe cooled sufficiently to allow energy to be converted into various subatomic particles, including protons, neutrons, and electrons.

After these annihilations, the remaining protons, neutrons and electrons were no longer moving relativistically and the energy density of the Universe was dominated by photons ( with a minor contribution from neutrinos ).

After about 379, 000 years the electrons and nuclei combined into atoms ( mostly hydrogen ); hence the radiation decoupled from matter and continued through space largely unimpeded.

After the advent of quantum mechanics, work done by Landau in 1930 predicted the quantization of the Hall conductance for electrons confined in two dimensions.

After the electrons have left the sample they pass through the electromagnetic objective lens.

After the interference, both electrons move as if they never had seen the other one.

After the particles were discovered by J. J. Thomson and Walter Kaufmann in 1896, FitzGerald was the one to propose calling them electrons.

After joining p-type and n-type semiconductors, electrons near the p – n interface tend to diffuse into the p region.

After passing the anode opening the electrons move with constant speed in a slightly divergent cone.

After being written to, the insulator traps electrons on the FG, locking it into the 0 state.

After a while, free electrons recombine with those hydrogen ions.

After the electrons are derived from succinate oxidation via FAD, they tunnel along the relay until they reach the cluster.

After the peak frequency the spectrum falls, with an additional break indicating very short lifetimes for high energy electrons.

After striking the wall, the electrons eventually make their way to the anode, flow through the anode wire, the power supply, and back to the cathode.

After the Civil War, Douglass remained active in the United States ' struggle to reach its potential as a " land of the free ".

After Hattusa was made capital, the area encompassed by the bend of the Halys River ( Hittite Marassantiya, ) was considered the core of the Empire, and some Hittite laws make a distinction between " this side of the river " and " that side of the river ", for example, the reward for the capture of an eloped slave after he managed to flee beyond the Halys is higher than that for a slave caught before he could reach the river.

After " Get Up Offa That Thing ", thirteen of Brown's late 1970s recordings for Polydor, failed to reach the Top 10 of the R & B chart, with only " Body Heat " in 1976 and the disco-oriented " It's Too Funky in Here " in 1979 reaching the R & B Top 15 and the ballad " Kiss in ' 77 " reaching the Top 20.

After the Allies failed to reach an agreement with Lithuania, they referred the matter to the League of Nations.

After the discovery of the ozone hole it only took 18 months to reach a binding agreement in Montreal.

After this the doses are titrated until they reach either a clinically sufficient level that prevents withdrawal, cravings and possible continued use of illicit opioids, or until they reach a maximum dose set by clinic policy.

* 1520 – After navigating through a strait at the southern end of South America, three ships under the command of Portuguese explorer Ferdinand Magellan reach the Pacific Ocean, becoming the first Europeans to sail from the Atlantic Ocean to the Pacific.

After two unsuccessful years with Kotite, Hess heavily involved himself in hiring Bill Parcells in hopes to see his team again reach the Super Bowl.

Assume the Earth is in L, at the second quadrature with Jupiter ( i. e. ALB is 90 °), and Io emerges from D. After several orbits of Io, at 42. 5 hours per orbit, the Earth is in K. Rømer reasoned that if light is not propagated instantaneously, the additional time it takes to reach K, that he reckoned about 3½ minutes, would explain the observed delay.

After having obtained 30, 000 Marks as a ransom for the hostages he had taken from the Flemish cities he had captured, Philip quickly retraced his steps in order to reach Dam.

After receiving Murray's kickoff, the Bills could only reach their own 41-yard line before being forced to punt.

After 10. 5 % economic growth in 2010, the World Bank expects growth to continue and reach 5 % for 2011.

* November 28 – After navigating through the South American strait, three ships under the command of Portuguese explorer Ferdinand Magellan reach the Pacific Ocean, becoming the first Europeans to sail from the Atlantic Ocean to the Pacific ( the strait was later named the Strait of Magellan ).

After the tragedy, these problems were fixed, and the Apollo program carried on successfully to reach its objective of landing men on the Moon.

After the incident, these problems were fixed, and the Apollo program carried on successfully to reach its objective of landing men on the Moon.

After avoiding several defense systems, Keen is able to reach and destroy the device.

After " Coffee & TV ", the first Blur single to feature Coxon on lead vocals, managed to only reach number 11 in the UK, manager Chris Morrison demanded a chart re-run because of what he deemed was a sales miscalculation.

After decades of sailors trying to reach India with thousands of lives and dozens of vessels lost in shipwrecks and attacks, Gama landed in Calicut on the 20 May 1498.

After the conclusion of the war, France was again free to pursue its desire to reach the Rhine and in 1444 a French army appeared in Lorraine and Alsace.

After her brother's capture on Coruscant, subsequent transport to Byss, and temptation by the cloned Palpatine, a pregnant Leia along with her husband, Han Solo, reach the Emperor's new stronghold of Byss, where she confronts the reincarnated Sith Lord.

This discharge takes no more than a few microseconds, and is able to reach accelerations of about 40, 000 g. Recent research suggests the process to occur as fast as 700 nanoseconds, thus reaching an acceleration of up to 5, 410, 000 g. After penetration, the toxic content of the nematocyst is injected into the target organism, then the sessile cnidarian to devour it.

After his death in 632, much of the expansion of the empire came through conquest, such as that of North Africa and later Spain ( Al-Andalus ), and the Islamic conquest of Persia putting an end to the Sassanid Empire and spreading the reach of Islam to as far East as Khorasan, which would later become the cradle of Islamic civilization during the Islamic Golden Age and a stepping-stone towards the introduction of Islam to the Turkic tribes living in and bordering the area.

After a patient arrives at a thermographic laboratory, he or she is allowed to reach thermal equilibrium in a 16 – 20 ° C, draft-free, steady-state room wearing a loose fitting cotton hospital gown for approximately 20 minutes.

After the current in a thyristor has extinguished, a finite time delay must elapse before the anode can again be positively biased and retain the thyristor in the off-state.

After leaving the anode the divergent electron beam does not have power density sufficient for welding metals and has to be focused.

After establishing a steadystate density of the evaporating anode material atoms, and when the voltage applied is high enough, a bright discharge is ignited between the electrodes.