What are microwaves? Why are they used in radars?

Answer

### Step-by-Step Solution

**Step 1: Definition of Microwaves**
Microwaves are a type of electromagnetic radiation characterized by their relatively large wavelengths and low frequencies. They fall within the electromagnetic spectrum between radio waves and infrared radiation.

**Step 2: Properties of Microwaves**
Microwaves have unique properties that make them suitable for various applications. One of their key characteristics is that they can be focused into narrow beams and travel in straight lines with minimal bending or deviation when encountering obstacles.

**Step 3: Application in Radars**
Radars utilize microwaves for detecting objects. The ability of microwaves to travel in straight lines with minimal deviation allows them to effectively bounce off obstacles. This property is crucial for determining the location and size of objects, making microwaves an ideal choice for radar systems.

**Step 4: Conclusion**
In summary, microwaves are electromagnetic waves with large wavelengths and low frequencies. Their straight-line propagation and minimal deviation make them particularly useful in radar technology for detecting and locating obstacles.