The internet is not solely based on radio waves; it encompasses a wide range of communication technologies, including wired and wireless connections. When it comes to the transmission of data through a small wire, such as an Ethernet cable, the method used is typically electrical signaling rather than radio waves.
In a wired connection, data is transmitted as electrical signals through the wire. These signals represent binary information in the form of ones and zeros, also known as bits. The wire acts as a conduit for these electrical signals, allowing them to travel from one device to another.
Inside the wire, the electrical signals travel as a flow of electrons. When a voltage difference is applied across the wire, electrons move from the higher voltage end (source) to the lower voltage end (destination). The movement of electrons carries the information in the form of electrical impulses.
The data transmission through a wire is typically facilitated by modulation techniques, where the electrical signals are modulated to encode the data. Different modulation schemes exist, such as amplitude modulation (AM), frequency modulation (FM), or phase modulation (PM), depending on the specific requirements of the communication protocol.
In summary, the internet utilizes various transmission technologies, and while radio waves are used in wireless connections, wired connections employ electrical signaling through wires to transmit data.