Bell's inequality and the spooky actions at a distance

TL;DR

This paper explores Bell's inequality, providing a new simple derivation, and clarifies its significance in quantum entanglement experiments for undergraduate physics students.

Contribution

It introduces a novel, mathematically simple derivation of Bell's inequality and clarifies its meaning within the context of the EPR experiment.

Findings

New simple derivation of Bell's inequality

Clarification of Bell's theorem for educational purposes

Emphasis on the inequality's significance in quantum entanglement

Abstract

This article discusses the main aspects related to Bell's inequality, both theoretical and experimental. A new derivation of Bell's inequality is also presented, which stands out for its mathematical simplicity. The exposition is mainly intended for undergraduate physics students, and places special emphasis on clarifying the meaning and scope of Bell's theorem in the context of the Einstein-Podolski-Rosen experiment.