What ideas led Maxwell to think about e.m. wave?

Explanation

To understand the ideas that led James Clerk Maxwell to think about electromagnetic (e.m.) waves, we can break down the reasoning into several key steps:

### Step-by-Step Solution:

1. **Understanding Electromagnetic Induction**:
- Michael Faraday conducted experiments that demonstrated electromagnetic induction, which showed that a changing magnetic field can induce an electric field. This was a fundamental observation in electromagnetism.

2. **Maxwell's Theoretical Study**:
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