atomic units


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atomic units

[ə′täm·ik ′yü·nəts]
(atomic physics)
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A common and useful parameter for the explanation of the compositional dependence on the physical properties is the coordination number Z of covalent bonds per atom, characterizing the structural atomic units [5,13,14].
We can consider such a scenario by choosing as the initial state a tightly localized state given by [psi](x, 0) = [square root of (2)] sin [k.sub.0]x, with [k.sub.0] = [pi] and the barrier parameters a = 1, b = 2, and [V.sub.0] = 11, in Rydberg atomic units. In this situation the initial wave function is perfectly confined to the left of the barrier (0 < x < 1), and above-the-barrier components contribute in a significant way to build the wave packet, as can be seen from [rho](k) in the top plot of Figure 8 (in this case the probability of finding a nontunneling k component in the wave packet is approximately 75%).
On 3 June 1955, he started to control the UK radio time signals using atomic units of time derived from the atomic clock, effectively marking what he called "the death of the astronomical second and the birth of atomic time".
That's the idea behind Atomic Design--allowing designers and developers to break things down into their "atomic units" and assemble the building blocks into larger components until a complete design system is created, says Frost.
Toukan said the oil-rich United Arab Emirates will by 2017 switch to nuclear-powered electricity, noting that the UAE had gone 70 percent on that path and had taken a decision to add two more atomic units.
Data is being scaled out in Atomic Units. All Data of a particular atomic unit stick together.
The country has 14 atomic units in operation, is building at least 27 reactors, and has 50 more planned.
One the most important contributions of Sieyes was to undermine the virtually unquestioned modern view of individuals as discrete, atomic units. As Urbinati notes, "Sieyes turned the logic of a centuries-old tradition of political thought upside-down.
The IRGC's specialised but secret atomic units are said to be close to mastering the nuclear fuel cycle.
These charges are compared with experimental bulk ionic character charges of InSb [9] that have the value 0.32 atomic units (a.u.).
The "resistance" of a nucleus can be bond by their coupling energy which shows the energy required for destroying the nucleus into its consisting nucleons (their number in the nucleus is equal to the mass number A expressed in atomic units of mass, a.m.u.).