Why is the energy distribution of `beta` rays continuous?

Explanation

To understand why the energy distribution of beta rays is continuous, we can break down the explanation into several steps:

### Step-by-Step Solution:

1. **Understanding Beta Decay**:
- Beta decay is a process in which a beta particle (which can be an electron or positron) is emitted from a nucleus. This process can be represented as:
\[
A \rightarrow B + \beta + \bar{\nu}
...