# Linked Questions

6answers
3k views

### Prove that an electron in a hydrogen atom doesn't emit radiation [duplicate]

According to electrodynamics, accelerating charged particles emit electromagnetic radiation. I'm asking myself if the electron in an hydrogen atom emits such radiation. In How can one describe ...
1answer
20k views

### What prevents an atom's electrons from “collapsing” onto its protons? [duplicate]

Forgive me if the answer to this is obvious. I have no formal physics training, and I remember that when I asked my physics teacher this, she just frowned and said "Good question." An electron is ...
1answer
9k views

### Why isn't Hydrogen's electron pulled into the nucleus? [duplicate]

Possible Duplicate: Why do electrons occupy the space around nuclei, and not collide with them? Why don’t electrons crash into the nuclei they “orbit”? From what I learned in chemistry, the ...
7answers
3k views

### Why can't electrons fall into the nucleus? [duplicate]

I read a book on pop sci book on quantum mechanics and the author said that electrons do not fall into the nucleus due to quantum mechanics- which principles suggest this (I think it was Heisenberg's ...
1answer
1k views

### does matter radiate energy? [duplicate]

Since we know that all accelerated charges radiate energy and we also know that all matter is made up of protons and electrons which are all the while doing accelerated motion.So from this can i ...
2answers
905 views

### Why do electrons revolve around the nucleus? [duplicate]

Why do electrons revolve around the atom's nucleus? Where does it get the energy for the revolution? Do the electrons stop revolving at absolute zero temperatures?
0answers
3k views

### How does quantum mechanics explain stability of electron orbitals? [duplicate]

According to classical physics, an electron orbiting the nucleus would emit electromagnetic radiation. Losing energy in that way, it would spiral into the nucleus and the atom would collapse. Quantum ...
2answers
1k views

### Why don't electrons moving around in a orbit produce electromagnetic waves in their natural state? [duplicate]

If moving electrons produce changing electric field, and if changing electric field produces magnetic field, every electron must produce an electromagnetic wave. This means an atom in its natural ...
2answers
1k views

### Why does Bohr's stationary orbits not radiate energy? [duplicate]

I am presently in high school trying to understand the Bohr's theory. I somewhat familiar with Maxwell's laws but very soon I'll learn about them thoroughly. So please could anyone explain with ...
2answers
157 views

### Why does electron $(-)$ keep rotating round the nucleus $(+)$ even they are attracted? [duplicate]

I'm a secondary school pupil, my physics textbook discussed atomic physics without deep details because we are young boys, to explain electron motion we first learn about rotational motion. The main ...
1answer
407 views

### Why don’t electrons fall into the nucleus of an atom? [duplicate]

The nuclei of atoms are composed of protons and neutrons. The proton has a positive charge, and the neutron a neutral charge. Shells of electrons outside the nucleus in the atom orbit around the ...
1answer
965 views

### “Why electrons don't fall into nucleus”simple explanation needed [duplicate]

Am studying in 8th grade and I studied electrostatic force which says opposite charge attracts and same charges repel But in an atom electron is just situated above the proton and it doesn't attracts....
4answers
1k views

### If centripetal force and centrifugal force acting on an electron is equal, then what makes electron to revolve the nucleus? [duplicate]

I want to know that how an electron is in continuous motion.
2answers
238 views

### classical understanding of an atom [duplicate]

A problem in Bohr's day was understanding why an orbiting electron does not continuously radiate an EM field. An orbiting electron is a moving charge and according to Maxwell, this should generate an ...
1answer
232 views

### Electron spiraling into nucleus [duplicate]

Any idea why it is said that, if electron is a particle it'll spiral into the nucleus and disintegrate in 10^-14 seconds? https://youtu.be/2wF_CVuWyEg?t=123 to https://youtu.be/2wF_CVuWyEg?t=142
2answers
387 views

### Why doesn't electron collide with nucleus? [duplicate]

We know that electrons go round the nucleus. But in my textbook, it is written that Rutherford's model was incomplete as the electrons would collide with the nucleus because of Maxwell's law. But in ...
2answers
289 views

### How does a electron revolve in Rutherford's model? [duplicate]

How can an electron revolve in a circular orbit because circular motion is an accelerated motion and acc. charged particle is a source of E.M. Wave. So,it should radiate out energy and hence would ...
1answer
390 views

### Bohr's atomic model [duplicate]

Why don't the electrons revolving around the nucleus in the Bohr's atomic model lose energy? I mean don't they accelerate because of which they should emit radiations. I don't get this concept. can ...
3answers
108 views

### Why not free electrons in atom doesn't radiates em waves\photons? [duplicate]

Why not free electrons in atom doesn't radiates em waves\photons, although they move with acceleration? Like 1s electron of Titan, it doesn't emits em waves, yes? Why?
1answer
110 views

### Why don't we consider the electromagnetic field in the equations of Bohr's theory of atoms? [duplicate]

hi,i know these, my mean that the magnitude magnetic field B formule that i find here my question is that we consider Coulomb force in Bohr's theory but don't consider the electromagnetic field? An ...
0answers
180 views

### Why don't atoms constantly emit light? [duplicate]

We know that accelerating charged particles emit electromagnetic radiation. We also know that electrons around nucleus have an angular momentum which means that electrons are revolving around the ...
3answers
213 views

### Electrons in the Rutherford model [duplicate]

I was reading about the Rutherford atomic model which said that electrons revolve around the nucleus the way the Earth and other planets revolve around the sun. This model was,however,shunned as it ...
2answers
93 views

### Electrons fly on certain orbits around nucleus. why do not they radiate waves and crash to the nucleus? [duplicate]

How to fill the gap between classical physics and quantum physics?
1answer
62 views

### Electron's eternal “orbit” about the nucleus [duplicate]

My 8th grade student asks me: "Why don't electrons just fall into the nucleus?" I don't want to lie and tell them it's "just like the Moon not falling onto Earth, because of, you know, acceleration". ...
0answers
94 views

### Why don’t electrons radiate energy when in circular orbits? [duplicate]

Wikipedia states that The electrons can only orbit stably, without radiating, in certain orbits (called by Bohr the "stationary orbits") at a certain discrete set of distances from the nucleus. ...
0answers
86 views

### Why don't electrons in atoms radiate away their energy? [duplicate]

I am aware this question has been asked before, but I am looking for a more technical answer than those given to the other questions. I am aware the question in the title is a problem in classical ...
0answers
73 views

### motion of electrons [duplicate]

Do electrons move randomly, with no preference of directions? And why electrons don't fall into the nucleus? About this question, I read the article on Chemistry wiki, which says that when electron ...
1answer
69 views

### Why atoms do not radiate energy? [duplicate]

In atoms electron moves in a circular motion with constant velocity but in circular motion acceleration is produced when we change direction so we cant get constant velocity. So why electron do not ...
0answers
56 views

### How does an electron manage to constantly revolve around the nucleus of an atom forever? [duplicate]

When an electron revolves around the nucleus of an atom is it using any energy in doing so. If so, where does this energy come from and how does it be a constant source (the electron revolves forever)...
1answer
86 views

### Is Coulomb's law correct? [duplicate]

Why don't electrons and protons collide? Hydrogen atoms are often ionized. After ionization, it is divided into electrons and protons, which can merge into hydrogen atoms at any time. Why don't ...
1answer
40 views

### Question about the orbits of electrons [duplicate]

A friend recently asked me the question, "If electrons have a negative charge and the nuclei of atoms have a positive charge, why don't electrons simply collapse into the nucleus and sit on it?". I ...
1answer
50 views

### Why electron moving with acceleration around nucleus is not emitting EM-waves? [duplicate]

I know that physics (beginnig with Bohr) say that while an electron is in any orbit (whle not jumping from orbit to orbit) it is not radiating EM-waves. But an electron in any orbit (even maximum ...
1answer
48 views

### What force counteracts the electrostatic attraction of an electron in an atom? [duplicate]

We all know it is not the centrifugal force. Given that the probability density multiplied by the surface area of a shell peaks at some distance from the nucleus. Also given that the electron in the ...
0answers
48 views

### Why Electron Does Not Radiate In Bohr Orbits? [duplicate]

Maxwell said that charged particles radiate when are in accelarating motion. I understand that $nλ=2πr$ must be fulfilled in order to create a sinusoidal standing wave and to satisfy the probability ...
0answers
48 views

### Which phenomenon makes the electrons revolve around the nucleus instead of crashing into it? [duplicate]

If the system has to gain stability, the electrons must crash into the nucleus but that's not the case.
0answers
43 views

### How is Schrodinger's model of atom consistent with reference to Maxwell's Theory of Electromagnetic Radiation? [duplicate]

When Rutherford proposed his model of atom, he mentioned that "Nucleus is surrounded by electrons that move around the nucleus with very high speed in circular paths called orbits. James Maxwell ...
0answers
42 views

### What is it that makes an electron maintain a distance from the positively charged nucleus? [duplicate]

What is it that makes an electron maintain a distance from the positively charged nucleus? Why aren't electrons merely pulled into and absorbed by the nucleus ?
0answers
37 views

### Why Does Electron Revolve around nucleus? [duplicate]

Actually why does electron revolve around nucleus. Considering Simple atom, hydrogen atom where a single electron revolves around the nucleus. It is said that the electrostatic force of attraction ...
0answers
34 views

### How to prove that atoms exist? More precisely - how come electrons and protons do not fall into each other? [duplicate]

Basically the question that I'm asking. Sure - There are few interactions that take the expected effect - electromagnetic, gravitational, strong and weak interactions. But how can we prove it, exactly?...
0answers
25 views

### Do all accelerating charge emit EM radiation? [duplicate]

A nucleus and an electron attract each other, so if they are to remain apart, the energy of the electron’s movement must balance the energy of attraction. However, the laws of physics had previously ...
0answers
17 views

### Circular motion of electrons around nucleus [duplicate]

We know that electrons are revolving around the nucleus because of the electrostatic force .But if the electron is moving in circular path then as acceleration has to be in inward direction due to a ...
4answers
27k views

### Why do electrons occupy the space around nuclei, and not collide with them?

We all learn in grade school that electrons are negatively-charged particles that inhabit the space around the nucleus of an atom, that protons are positively-charged and are embedded within the ...
4answers
3k views

### Why don't loop currents produce light?

If a charge travels in a circle it must accelerate, thereby producing EM. However, a wire in a circular loop is analogous to many charges moving in a circle. So, why don't circular currents produce ...
5answers
35k views

### Where do electrons get their ever-lasting circulating energy?

We all know (or maybe know) that to move, we need to spend energy. If you want to drive a car, you gotta spend gasoline. We also know that energy can't be created (first law of thermodynamics, and ...
3answers
2k views

### If an electron is an excitation of the electron field, what causes the excitation to be stable?

I won't pretend I understand even the basics of QFT, but from what I've heard about electrons, there are really two main ways of thinking about them. Quantum Mechanics describes an electron by a wave ...
1answer
2k views

### Why doesn't orbital electron fall into the nucleus of Rb85, but falls into the nucleus of Rb83?

Rb83 is unstable and decays to Kr-83. Mode of decay is electron capture. Rb85 is stable. The nuclei Rb83 and Rb85 have the same charge, but Rb85 is heavier than Rb83. While gravity acts more strongly ...
1answer
3k views

### What do we know about the interactions between the protons and neutrons in a nucleus?

In a nucleus, the strong nuclear force causes interactions between protons and protons, between neutrons and neutrons, and between protons and neutrons. What do we know about this interaction? ...
5answers
20k views

### What happens when we bring an electron and a proton together?

I have a couple of conceptual questions that I have always been asking myself. Suppose we have an electron and a proton at very large distance apart, with nothing in their way. They would feel each ...
4answers
18k views

### Collision between electron and proton?

What would happen if an electron collided with a proton such that the two do not collapse? Would the two become a unit, or would some force prevent them from bonding thus forcing the electron to orbit ...
2answers
2k views

### What causes Potassium to decay into Argon the way it does

From evolutionwiki: "Potassium 40 decays into argon 40 through a process known as electron capture. In electron capture, an electron from the innermost electron shell "falls" into the nucleus, ...

15 30 50 per page