What minimal value can the Brewester angle have when light falls from air on to the surface of any dielectric?

Explanation

To find the minimal value of the Brewster angle when light falls from air onto the surface of any dielectric, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Brewster's Angle**: Brewster's angle (θ_B) is defined as the angle of incidence at which light with a particular polarization is perfectly transmitted through a transparent dielectric surface, with no reflection. It is given by the formula:
\[ \tan(\theta_B) = n \]
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