EP174 | 💡LiFi：光照上網，點亮新科技

李老師陪你探索英文世界 Exploring English with Ms. Lee

Wi-Fi is now essential to every modern person’s life, but have you heard of Li-Fi. It’s been boasted as the new technology that could rock the world of the Internet. Li-Fi stands for light fidelity. Instead of using radio waves to transmit information like Wi-Fi, Li-Fi uses light waves, which makes the process faster and more secure. How does Li-Fi work? With this technology, your Internet would actually be transmitted through LED light bulbs, which would also provide the sources of light. So you basically kill two birds with one stone. Another advantage of Li-Fi is that it’s immune to occasional interference from other radio signals that can sometimes disrupt Wi-Fi. Naturally being man-made, it’s far from perfect. Unlike Wi-Fi, which can pass through walls, Li-Fi is limited to the room you are in because the devices have to be able to catch the light. Due to this limitation, it’s still too early to say whether it will replace Wi-Fi.
Li-Fi （Light Fidelity） 光照上網技術
essential 必須的
baost as 誇為
rock the world of the Internet 震撼網路世界
radio waves 無線電波
transmit 傳輸
light bulb 燈泡
Kill two birds with one stone. 一石二鳥。
immune 豁免、免疫
occasional interference 偶發性的干預
radio signal 無線信號
due to this limitation 歸因於這個限制
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