电子英文物理

physical electronis 是这个

电子的英语是electron。

electron

音标：英 [ɪˈlektrɒn]    美 [ɪˈlektrɑːn]

n.     电子

短语搭配：

例句：

1、Under certain conditions, electrons can behave like waves rather than particles.

在一定条件下，电子可以作波状运动，而不是粒子状运动

2、Protons are nearly 2000 times as heavy as electrons.

质子的质量几乎是电子的2,000倍。

3、The behavior of these unbound electrons is critical.

这些自由的电子作用极为重要。

CHARGE:More abstractly, a charge is any generator of a continuous symmetry of the physical system under study. When a physical system has a symmetry of some sort, Noether's theorem implies the existence of a conserved current. The thing that "flows" in the current is the "charge", the charge is the generator of the (local) symmetry group. This charge is sometimes called the Noether charge.Thus, for example, the electric charge is the generator of the U(1) symmetry of electromagnetism. The conserved current is the electric current.In the case of local, dynamical symmetries, associated with every charge is a gauge field; when quantized, the gauge field becomes a gauge boson. The charges of the theory "radiate" the gauge field. Thus, for example, the gauge field of electromagnetism is the electromagnetic field; and the gauge boson is the photon.Sometimes, the word "charge" is used as a synonym for "generator" in referring to the generator of the symmetry. More precisely, when the symmetry group is a Lie group, then the charges are understood to correspond to the root system of the Lie group; the discreteness of the root system accounting for the quantization of the charge.ELECTRON:The electron is a subatomic particle carrying a negative electric charge. It has no known components or substructure. Therefore, the electron is generally believed to be an elementary particle.[2] An electron has a mass that is approximately 1/1836 that of the proton[9] The intrinsic angular momentum (spin) of the electron is a half-integer value in units of ħ, which means that it is a fermion. The antiparticle of the electron is called the positron. The positron is identical to the electron except that it carries electrical and other charges of the opposite sign. When an electron collides with a positron, both particles may either scatter off each other or be totally annihilated, producing a pair (or more) of gamma ray photons. Electrons, which belong to the first generation of the lepton particle family,[10] participate in gravitational, electromagnetic and weak interactions.[11] Electrons, like all matter, have quantum mechanical properties of both particles and waves, so they can collide with other particles and be diffracted like light. However, this duality is best demonstrated in experiments with electrons, due to their tiny mass. Since an electron is a fermion, no two electrons can occupy the same quantum state, in accordance with the Pauli exclusion principle.[10]以上是定义，简要回答可以用ELECTRON的第一句The electron is a subatomic particle carrying a negative electric charge

电子的英语:electron

词语分析：

英 [ɪˈlektrɒn]

n.电子

短语：

例句：

1. The electron microscope uses a beam of electrons to produce images at high magnifications.

电子显微镜利用电子束形成高倍影像。

2. a scanning electron microscope

扫描电子显微镜

3. when an electron drops from an excited state to a less excited state

当电子从激发态降到较弱的激发态时

eV是电子伏特的英文缩写，1eV=1.6E-19J，等于一个电子在一伏电压加速时获得的能量。 为量度微观粒子能量的一种非国际单位制的能量单位。它表示一个电量与电子电量大小相同的粒子（例如质子，但是由于习惯大家都称之为电子伏特）通过电势差为1伏特的电场加速后，增加的能量，叫做一个电子伏[特]，记为eV

原子核（nucleus)是由带正电的质子（proton)和不带电的中子（neutron)组成。

质子和中子统称为核子（nucleon)。

在中性原子中，原子核内的质子数等于核外电子数，也代表核电荷数，称为原子序数，用Z表示。原子核内的质子数与中子数之和称为质量数，用A表示。

原子核内的中子数即为A-Z，若以X代表某种元素，则AZX表示元素的原子核组成。

大发展时期

20世纪40年代前后，核物理进入一个大发展的阶段。1939年，哈恩和斯特拉斯曼发现了核裂变现象；1942年，费密建立了第一个链式裂变反应堆，这是人类掌握核能源的开端。

在30年代，人们最多只能把质子加速到一百万电子伏特的数量级，而到70年代，人们已能把质子加速到四千亿电子伏特，并且可以根据工作需要产生各种能散度特别小、准直度特别高或者流强特别大的束流。

原子核(nucleus)是由带正电的质子(proton)和不带电的中子(neutron)组成，质子和中子统称为核子(nucleon)。在 中性原子中，原子核内的质子数等于核外电子数，也代表核电荷数，称为原子序数，用Z表示。原子核内的质子数与中子数之和称为质量数，用A表示。原子核内的 中子数即为A-Z，若以X代表某种元素，则 AZX表示元素的原子核组成

“电子”的英文是：electron

词语分析：

音标：英 [ɪ'lektrɒn]   美 [ɪ'lektrɑːn]

短语：

例句：

近义词：

答：如果把eV与qu联系起来看，不难发现eV的单位是J，就是说它是一个能量单位。实际上1eV=1.6×10的负十九次方焦耳。显然后面一种记法显得很复杂，计算起来也不方便，于是就直接写成1eV，在需要的时候再把它换算过来。例如780eV=780×1.6×10的负十九次方焦耳，就把电子伏特换算成了焦耳。