The Wave Nature of Matter and the Uncertainty Principle
4 Answers

Solve the deBrogile equation to find the wavelength of a baseball…you’ll find it many orders of magnitude lower than might be relevant to the ball game (in fact, if memory serves correct it will be several orders of magnitude less than visible light).

Wave Nature Of Matter

There are a few ways to answer this.
The easiest is that quantum mechanics isn’t a practical explanation for large structures (large compared to individual atoms.)
To take it further, the wave particle duality says, roughly, the individual constituents of the ball can be thought of as a wave or particle depending on how you look at it. That is, the quarks and electrons. When you have a large amount of them bunched up as in most matter people experience, the wave nature can be largely ignored. QM applies to very small things. To understand how the ball exists then it is a valuable tool. But to explain your interactions with a baseball quantum mechanics is nearly irrelevant.
It actually is very important for a baseball depending on what about the ball you want to know. As for Heisenberg Uncertainty, it applies to individual particles. Occasionally small systems of particles, but again it is generally irrelevant when used on such a large scale. It states that you can’t know the exact position and the exact velocity (as a vector – speed and direction or momentum) at the same time. It has other applications, but that is the major one. The key there is exact and exact on a quantum scale. So you can have a reasonable approximation of both and not violate Uncertainty. The feature that makes it not of particularly good use in a baseball is the scale. If you map every particle in 3 dimensions, the uncertainty you run in to is negligible on a scale of 10cm (a guess at the size of a baseball) since even millimeters are very large when dealing with quantum mechanics.
What it comes down to is scale and depth of information. If you want to know to the very best approximation physics can give you why the ball behaves as it does when it is hit with a bat then the waves and uncertainty would be important. For most practical applications, it just isn’t necessary to consider what’s happening at the quantum level because classical mechanics works well for that unless you examine extreme circumstances.
I’m sure this is a poor explanation, but it really just comes down to scale and practicality. Wave particle duality and uncertainty are both very important to the actual existence of the ball. As far as wave nature, most things can be thought of as particles or waves and for interactions with a ball applying the particle aspect is simply more practical.

What de Broglie did replaced into to think of that any particle–an electron, an atom, a bowling ball, regardless of–had a “wavelength” that replaced into equivalent to Planck’s consistent divided by potential of its momentum… properly, this assumption wasn’t thoroughly arbitrary; de Broglie knew that the momentum and wavelength of a photon actual have been correct in in basic terms this style. Photons don’t have mass, yet they do have capability–and as Einstein famously proved, mass and capability are rather the comparable issue. So photons have momentum–yet what precisely is a photon? for hundreds of years, a heated debate went directly to regardless of if mild is made out of debris or waves. In some experiments, like youthful’s double slit test, mild needless to say confirmed itself to be a wave, yet different phenomena, such through fact the photoelectric effect, confirmed the two needless to say that mild replaced right into a particle.