Although hydrogen-like orbitals are still used as pedagogical tools, the advent of computers has made STOs preferable for atoms and diatomic molecules since combinations of STOs can replace the nodes in hydrogen-like atomic orbital.

Although gold has an atomic number of 79, immediately after Rutherford's paper appeared in 1911 Antonius Van den Broek made the intuitive suggestion that atomic number is nuclear charge.

Although not called " neutronium ", the National Nuclear Data Center's Nuclear Wallet Cards lists as its first " isotope " an " element " with the symbol n and atomic number Z = 0 and mass number A = 1.

Although the amulet now resides in the Museum of Somerset, analysis by Liverpool University in 2008 using inductively coupled plasma atomic emission spectroscopy demonstrated that it was a hoax, as the silver within it dated to the 19th century or later.

Although Dulles has a lasting reputation as a hawk and nuclear weapons proponent, he was strongly opposed to the US atomic attacks on Japan.

Although the Bohr model is no longer in use, the Bohr radius remains very useful in atomic physics calculations, due in part to its simple relationship with other fundamental constants.

Although uranium-238 cannot be used for the initial stage of an atomic bomb, when U-238 absorbs a neutron, it transforms first into an unstable element, uranium-239, and then decays into neptunium-239, and finally the relatively stable plutonium-239, an element that does not exist naturally on Earth.

Although the term itself appears to have been coined at the start of the 1950s, mushroom clouds generated by explosions were being described before the atomic era.

Although this kind of statue is often found at Jōdo Shinshū temples, the statue is notable because it survived the atomic bombing of Hiroshima, standing a little more than a mile from ground zero.

Although they turned out to be wrong, these conjectures catalyzed further measurement of atomic weights, a great benefit to chemistry.

Although some of the CCD censorship laws considerably relaxed towards the end of SCAP, some topics, like the atomic bomb, were taboo until 1952 at the end of the occupation.

Although sodium and potassium are always present in naturally occurring nepheline in approximately the atomic ratio ( 3: 1 ), artificially prepared crystals have the composition NaAlSiO < sub > 4 </ sub >; the corresponding potassium compound, KAISiO < sub > 4 </ sub >, which is the mineral kaliophilite, has also been prepared artificially.

Although simple, Bragg's law confirmed the existence of real particles at the atomic scale, as well as providing a powerful new tool for studying crystals in the form of X-ray and neutron diffraction.

Although considerable research has gone into customizing mass spectrometers for atomic ion sources, it is the ion source that differs most from other forms of mass spectrometry.

Although he was not formally associated with the atom bomb project, the liquid thermal diffusion isotope separation technique that he invented at the Philadelphia Navy Yard was used in the S-50 plant in Oak Ridge, Tennessee ; and proved a critical step in creating the large amount of nuclear fuel required for building atomic bombs.

Although other tanks were subjected to nuclear tests, 169041 is the only tank known to have withstood atomic tests and subsequently gone on for another 23 years of service, including 15 months on operational deployment in a war zone.

Although these educational institutions suffered a great deal of damage due to the atomic bomb which was dropped on Hiroshima on August 6, 1945, they were reconstructed and combined to become the new Hiroshima University.

Although the six-engine B-36 bomber was one of the newest aircraft in the USAF, it was not initially designed to carry atomic weapons and therefore required modifications in order to be coupled with such weapons.

Although his world now possessed the capacity for atomic weapons, Arkon was dissatisfied with the length of time it took to build a nuclear arsenal.

Although the most common isotope of uranium, uranium-238 (< sup > 238 </ sup > U ), can be used as secondary fissionable material in hydrogen bombs, it cannot be used as the primary fissile material for an atomic bomb .< sup > 238 </ sup > U can be used to produce < sup > 239 </ sup > Pu, through the fission of < sup > 235 </ sup > U which produces neutrons, some of which will be absorbed by < sup > 238 </ sup > U creating < sup > 239 </ sup > U. After a few days the < sup > 239 </ sup > U will decay, turning into weapons-usable < sup > 239 </ sup > Pu.

Although some discrete quantum phenomena, such as atomic spectra, were observed much earlier, the Stern – Gerlach experiment allowed scientists to conduct measurements of deliberately superposed quantum states for the first time in the history of science.

Although the commencement of the invasion fell between the atomic bombings of Hiroshima, on August 6, and Nagasaki, on August 9, the timing of the invasion had been planned well in advance and was determined by the timing of the agreements at Tehran and Yalta, the long term buildup of Soviet forces in the Far East since Tehran, and the date of the German surrender ; on August 3, Marshal Vasilevsky reported to Stalin that, if necessary, he could attack on the morning of August 5.

Although Richards's chemical determinations of atomic weights were highly significant for their time, they have largely been superseded.

Although the wood has been changed to coal, much of it still retains its original cell structure.

Although the manufacturer committed to re-do the broken parts, Gaudí liked the aesthetic of the broken masonry and asked that the pieces be stuck to the main structure with lime mortar and held in with a brass ring.

Although the Three Kingdoms were reunified by the Jin Dynasty in 280, this structure was essentially the same until the Wu Hu uprising.

Although the isosahedral structure is extremely common among viruses because of size differences slight variations exist between virions.

Although water forms the large majority of the cytosol, its structure and properties within cells is not well understood.

Although water is vital for life, the structure of this water in the cytosol is not well understood, mostly because methods such as nuclear magnetic resonance only give information on the average structure of water, and cannot measure local variations at the microscopic scale.

Although it was the world's tallest structure when completed in 1889, the Eiffel Tower has since lost its standing both as the tallest lattice tower and as the tallest structure in France.

Although Jane Austen tried her hand at the epistolary in juvenile writings and her novella Lady Susan, she abandoned this structure for her later work.

Although the text identifies Peter as its author the language, dating, style, and structure of this letter has led many scholars to conclude that this letter is pseudonymous.

Although this phenomenon was nothing new, ( the most famous example being Neil Blaney's " Donegal Mafia ") it increased significantly from the early 90's particularly in the Dublin Region with former Taoiseach Bertie Ahern's " Drumcondra mafia " and the separate groups supporting Tom Kitt and Séamus Brennan in Dublin South largely separate from the official party structure.

Although the first edition sold out within a year, Calvin was dissatisfied with its structure as a catechism, a primer for young Christians.

Although the property was sold in 1922, the reconstructed structure remained in its serene setting.

Although their political structure and autonomy varies widely, union leaderships are usually formed through democratic elections.

Although today Sophus Lie is rightfully recognized as the creator of the theory of continuous groups, a major stride in the development of their structure theory, which was to have a profound influence on subsequent development of mathematics, was made by Wilhelm Killing, who in 1888 published the first paper in a series entitled

Although Chomsky's theory of a generative grammar has been popular with some linguists since the 1950s, many criticisms of the basic assumptions of generative theory have been put forth by cognitive-functional linguistics, who argue that language structure is created through language use.

Although the political structure in western Europe had changed, the divide is not as extensive as some historians have claimed., they were only made possible because of the long medieval tradition that established the use of reason as one of the most important of human activities ".

Although muonium is short-lived, physical chemists use it in a modified form of electron spin resonance spectroscopy for the analysis of chemical transformations and the structure of compounds with novel or potentially valuable electronic properties.

Although neurons are very diverse and there are exceptions to nearly every rule, it is convenient to begin with a schematic description of the structure and function of a " typical " neuron.

Although nucleosomes are intrinsically mobile, eukaryotes have evolved a large family of ATP-dependent chromatin remodelling enzymes to alter chromatin structure, many of which do so via nucleosome sliding.

Although the exact 3D structure of PrP < sup > Sc </ sup > is not known, it has a higher proportion of β-sheet structure in place of the normal α-helix structure.