What is the contribution of physics to our society ?

Explanation

### Step-by-Step Text Solution

1. **Introduction to the Contribution of Physics**:
Physics plays a crucial role in shaping our modern society. Its principles and laws are foundational to many technologies and systems we rely on daily.

2. **Impact on Communication Devices**:
- **Smartphones and Gadgets**: The functioning of smartphones, including their screens and internal components, is based on the laws of physics. For example, the way screens display images involves principles of optics and light.
- **Internet Connectivity**: The infrastructure for internet connectivity, such as fiber optic cables, relies on the physics of total internal reflection, allowing data to be transmitted over long distances efficiently.
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