Signal transmission refers to the process of sending information from one place to another. This can happen through various mediums, such as air, cables, or fiber optics. For example, when you make a phone call, your voice is converted into electrical signals that travel through telephone lines or cell towers to reach the other person. In the digital world, signal transmission is crucial for activities like browsing the internet or streaming videos. Data is broken down into smaller packets and sent over networks, ensuring that it arrives quickly and accurately. Technologies like Wi-Fi and Bluetooth help facilitate this communication, making it easier for devices to connect and share information.