What is computer graphics? Explain different application areas of computer graphics.

Computer graphics is a sub-field of computer science which studies methods for digitally synthesizing and manipulating visual content. It involves the generation and manipulation of images by a computer, including the techniques and tools used to accomplish these tasks. It's about making computers create and manipulate visual data.

The application areas of computer graphics are vast and constantly evolving. Here are some of the main ones:

1. Entertainment: Computer graphics are heavily used in films, games, and virtual reality. In films, it's used for visual effects, animation, and digital doubles. In games, it's used for character and environment modeling, texture mapping, and real-time rendering. In virtual reality, it's used to create a fully immersive 3D environment.

2. Education and Training: Computer graphics are used to create simulations and virtual environments for training and education. For example, pilots can be trained using flight simulators, and medical students can practice surgeries in virtual environments.

3. Design: In fields like architecture, interior design, and industrial design, computer graphics are used to create 3D models of designs and visualize them in a realistic way. This helps in better understanding of the design and in making improvements.

4. Scientific Visualization: In fields like physics, chemistry, and biology, computer graphics are used to visualize complex scientific data and phenomena. This helps in better understanding of the data and in making new discoveries.

5. Art: Many artists use computer graphics to create digital art. This includes 3D modeling, digital painting, and interactive art.

6. Advertising: Computer graphics are used in advertising to create attractive and eye-catching visuals. This includes both still images and animated videos.

7. User Interfaces: Computer graphics are used to design user interfaces for software and websites. This includes the design of icons, buttons, and other visual elements.