Does Matter Really Move Like a Wave and Hit Like a Particle?

Join the discussion
Ask a follow-up here, or get your own question answered by working scientists, mathematicians and engineers — people, not an autocomplete.
Real named experts · corrections over time · the nuance an AI answer skips
4 replies · 2K views
elou
Messages
74
Reaction score
3
TL;DR
Waves are a perceptual phenomena, not a physical one
This is meant as a challenge to look more closely than we usually do to the concepts of "wave" and "particle". You often hear that matters moves as a wave but hits at a particle, making it sound like a super Mohamed Ali's "move like a butterfly and sting like a bee".
To give a simple example I would say that, as a group, water molecules move like a wave, but each molecule moves like a particle.
 
  • Skeptical
Likes   Reactions: weirdoguy and Dale
Physics news on Phys.org
We can physically measure waves with physical devices in a variety of physical experiments, so saying that they are not physical is rather unjustifiable.
 
  • Like
Likes   Reactions: Vanadium 50
What is being measured is of course physical. But what is being measured?
We all know that all water molecules do is move up and down, and hardly forward and backward. We certainly see a wave, but if we slowed down our vision a few million times or more, all we would see are individual molecules moving up and down.
 
elou said:
What is being measured is of course physical. But what is being measured?
A wave. What is measured has all of the properties and behaviors that a wave is supposed to have, so it is a wave.

If an object walks like a duck and quacks like a duck and has all of the other properties and behaviors attributed to ducks then it is a duck.
 
elou said:
You often hear that matters moves as a wave but hits at a particle,
Yes, we often hear that. It is an attempt to simplify quantum mechanics by describing quantum mechanics in layman-friendly language, not an accurate explanation of how quantum mechanics works and the role of "waves" in the theory.

Because the starting point of this thread is a misconception we are closing the thread.
OP is reminded of the forum rule about acceptable sources - "will often hear" is not the starting point for an informed discussion..
 
  • Like
Likes   Reactions: renormalize, DrChinese, Lord Jestocost and 2 others