Ionized by energetic starlight, a hydrogen atom emits the characteristic red H-alpha light as its single electron is recaptured and transitions to lower energy states.

氢原子被高能的恒星光离子化之后，在它的单个电子重新被捕获并跃迁到低能级上时会放出典型的红色h - alpha光。

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One can picture this single electron spin caught on the nanotube as an artificial atom, " says researcher from University of Copenhagen and participant in the study, Jonas Hauptmann.

人们也可以把被碳纳米管捕捉的单电子自旋当成一个人造的原子。” 哥本哈根大学研究员，这项研究的参与者，Jonas Hauptmann 说。

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We have placed the nanotubes between magnetic electrodes and we have shown that the direction of a single electron spin caught on the nanotube can be controlled directly by an electric potential.

我们把碳纳米管放在磁性电极之间。然后我们发现被碳纳米管捕捉的单电子自旋方向可以被电势直接控制。

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In nineteen-oh-six, the electron tube was considered the single most important development in electronics.

VOA: special.2010.01.31

But now it's going to make more sense because in that case we were just talking about single electron atoms, and now we're talking about a case where we actually can see shielding.

但是现在能讲得通了,因为在那个情况中我们仅仅是现在我们讨论的是,讨论单电子原子，看到屏蔽的案例,我们能看到屏蔽。

麻省理工公开课 - 化学原理课程节选

We also need to follow Hund's rule, this is that a single electron enters each state before it enters a second state.

我们也需要遵从洪德规则，这是一个电子在进入第二个态之前,要进入每一个态。

麻省理工公开课 - 化学原理课程节选

Hydrogen, the simplest atom, consists of a single proton encircled by a single electron.

ECONOMIST: Biochemistry

In diamonds, the six-electron atoms share a single electron with each of the four atoms that abut them, forging the strongest bond known to chemists and making diamonds among the hardest minerals.

FORBES: Fracture Lines

In addition, since a single electron travelling through the device emits light not once (as in most other lasers), but many times, quantum cascade lasers are powerful: Dr Capasso's group has recently shown that they beat conventional semiconductor lasers by a factor of 20.

ECONOMIST: Lasers