Explain what is meant by isothermal and adiabatic operations.

Explanation

### Step-by-Step Solution:

1. **Definition of Isothermal Operation**:
- An isothermal operation is a thermodynamic process in which the temperature of the system remains constant throughout the process. This means that any heat added to the system is balanced by work done by the system, ensuring that the internal energy does not change.

2. **Characteristics of Isothermal Processes**:
- In an isothermal process, while the temperature remains constant, the pressure and volume of the system can change. This is commonly observed in processes involving gases, such as the expansion or compression of an ideal gas at a constant temperature.

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