The dual nature of radiation was proposed by ………..

Explanation

To answer the question "The dual nature of radiation was proposed by ………..", we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Concept**: The question is about the dual nature of radiation, which refers to the idea that light exhibits both wave-like and particle-like properties.

2. **Historical Context**: The concept of dual nature was proposed by a physicist who contributed significantly to quantum mechanics.

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