The underlying principle involves the transmission of data or power through the air, without the need for physical cables. This is achieved using electromagnetic waves, such as radio waves, microwaves, or infrared radiation. A common example includes a Wi-Fi network, where data is transmitted between a router and a device like a laptop or smartphone via radio waves, allowing the device to access the internet without a wired connection.
This technology facilitates mobility, reduces clutter associated with cables, and enables connectivity in scenarios where physical connections are impractical or impossible. Its development has revolutionized communication, allowing for widespread access to information and enabling new forms of entertainment and productivity. Historically, advancements in understanding electromagnetic radiation have fueled the progress of this essential technology, moving from early telegraph systems to the complex wireless networks of today.
