Radius of the electron and uncertainty

Click For Summary

Discussion Overview

The discussion revolves around the concept of the electron's radius and its implications regarding uncertainty in measurements. Participants explore whether electrons can be visualized as having a shape or size, and how this relates to the uncertainty principle in quantum mechanics.

Discussion Character

  • Debate/contested
  • Conceptual clarification

Main Points Raised

  • Some participants propose that electrons can be visualized as small balls with a radius, while others challenge this notion, suggesting that electrons are point-like and do not possess a measurable size.
  • There is a suggestion that the radius and mass of a particle may be influenced by the uncertainty principle, which complicates discussions about shape and size.
  • Some participants express difficulty in accepting the idea of shape for elementary particles, arguing that such concepts may not apply to entities that are nearly point-like.

Areas of Agreement / Disagreement

Participants do not reach a consensus on whether electrons can be considered to have a radius or shape. Multiple competing views remain regarding the interpretation of electrons in terms of size and the implications of the uncertainty principle.

Contextual Notes

The discussion highlights limitations in understanding related to the definitions of shape, size, and the effects of the uncertainty principle on measurements of elementary particles.

IWantToLearn
Messages
95
Reaction score
0
i thought that electrons are merely abstract thing or statistical entities, so i mitigated every attempt to visualize them as something that has a shape like a sphere, has a radius, internal structure,
i thought that any attempt to measure a radius (if any) could result in uncertainty in measuring so we will never know actual radius
until i found a lecturer talking about that there is a radius and electron can be visualized as small ball!
What is wrong in my understanding?
 
Physics news on Phys.org
Yes, it can be a very small ball. Smaller than the classical electron now in fact.


And yes, Lloyd Motz has suggested that the radius and mass of a particle are effected by the uncertainty principle.
 
Meselwulf said:
Yes, it can be a very small ball. Smaller than the classical electron now in fact.

How come we can talk about shape!?, without talk about internal structure
i find difficulties in accepting this idea
i think we must migrate the idea of shape when talking about elementary particles which are almost point-like

Meselwulf said:
And yes, Lloyd Motz has suggested that the radius and mass of a particle are effected by the uncertainty principle.

this is a support to my idea that we can't talk about anything like shape, volume, density, since all of these values that subject to the uncertainty principle
 
IWantToLearn, You are correct. An elementary particle like an electron is NOT a small ball. It's pointlike, which means its size (if it even has one) is too small to be observed.
 

Similar threads

  • · Replies 14 ·
Replies
14
Views
3K
  • · Replies 21 ·
Replies
21
Views
3K
  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 13 ·
Replies
13
Views
3K
  • · Replies 36 ·
2
Replies
36
Views
9K
  • · Replies 3 ·
Replies
3
Views
2K
  • · Replies 12 ·
Replies
12
Views
4K
  • · Replies 6 ·
Replies
6
Views
2K
  • · Replies 6 ·
Replies
6
Views
3K
  • · Replies 41 ·
2
Replies
41
Views
6K