Imagine getting internet access just by shining a light on your phone or laptop. This is possible with a technology called Li-Fi, or Light Fidelity , which uses light beams to transmit data instead of radio waves like Wi-Fi. Li-Fi can provide internet speeds that are 100 times faster than Wi-Fi, making it a revolutionary step in digital connectivity. Despite its speed, Li-Fi is not yet widely used, but it holds great potential for the future of internet access. Harnessing Light for Data Transmission Li-Fi works by using visible light from sources like LED bulbs to transmit data. It has two main components: a photodiode that receives light signals and a light source that sends signals using a signal-processing unit. The LED light bulb shines a specific band of wavelengths, and the photodiode converts this light into electrical current, which contains data like text and videos. Harold Haas, known as the 'father of Li-Fi,' has spent two decades researching this technology, earning recognition for his work. Li-Fi's Potential and Limitations Li-Fi has several advantages over Wi-Fi, such as being more energy-efficient and secure. It only needs LED lights for data transmission, unlike Wi-Fi, which requires more energy. Li-Fi is also more secure because it only works when the light shines directly on your device, unlike Wi-Fi signals that can extend outside. However, Li-Fi has limitations like a limited range and compatibility with fewer devices. Despite these challenges, Li-Fi could become essential in various fields, including undersea explorations, airlines, hospitals, and homes, with further research and development.
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Li-Fi: The Future of Internet Connectivity

Imagine getting internet access just by shining a light on your phone or laptop. This is possible with a technology called Li-Fi, or Light Fidelity, which uses light beams to transmit data instead of radio waves like Wi-Fi.

Li-Fi can provide internet speeds that are 100 times faster than Wi-Fi, making it a revolutionary step in digital connectivity. Despite its speed, Li-Fi is not yet widely used, but it holds great potential for the future of internet access.

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