一道英文的物理题When a proton captures an electron,a photon with anenergy of 13.6 eV is emitted.What is the frequency of thisphoton?Does it lie in,above,or below the visible range?答案 当一个质子捕获一个电子时,会发射出一个具有13.6电子伏能量的光子,请问这个光子的频率是多少?它是否在可见光...
Electrons are unique from the other particles in multiple ways. They exist outside of the nucleus, are significantly smaller in mass and exhibit both wave-like and particle-like characteristics. An electron is also anelementary particle, which means that it is not made up of smaller components....
An electron microscope is a type of microscope that uses electrons rather than photons — as a conventional light microscope does — for imaging. Because electrons have a much smaller wavelength than photons, they provide much greater magnification. Electrons are the tiny “satellites” that orbit ...
In contrast,metal has so many conduction electrons that it is difficult to change its conductivity by modulating its electron concentration. In the other extreme,insulator has so few electrons that its conductivity cannot be modulated significantly at all. To summarize,a semiconductor is a solid ...
The core component of the first generation of computers was thevacuum tube, also known as the electron tube. A vacuum tube is an electronic component that controls current by using a stream of electrons in a vacuum to achieve signal amplification or switching functions. Inside the vacuum tube,...
What is the speed of the electron in its orbit? Does the charge of a particle warp space-time? How far does particulate matter travel? How can the speed of a mechanical wave be calculated? How fast does light travel? What is the Galilean principle of relativity?
Two-photon annihilation of an electron-positron pair in the field of an pulsed laser field is theoretically investigated. The amplitude of the process has ... E.A. Padusenko,S.P. Roshchupkin - International Conference on Mathematical Methods in Electromagnetic Theory 被引量: 36发表: 0年 Devel...
aThe electron is therefore very responsive indeed to electric and magnetic fields. 因此电子对电和磁场的确是非常敏感的。[translate] a从北京到成都有多远? Has from Beijing to Chengdu far?[translate] acriticisms of marketing 行销批评[translate] ...
such as an electron and a positron, find themselves in the same place, both waveforms disintegrate into something altogether different. At the same time, the charges of antiparticles are equal but opposite, so they attract one another. This is why antimatter must be contained inside a "magneti...
aTo visualize an atom, picture the nucleus as the size of a penny. In this case, electrons would be smaller than grains of dust and the electron cloud would extend outward as far as 20 football fields. 要形象化原子,生动描述中坚力量作为便士的大小。 在这种情况下,电子尘土和电子云五谷将延伸向...