Definition of lightning rod

lightning rodnoun

cột thu lôi

/ˈlaɪtnɪŋ rɒd//ˈlaɪtnɪŋ rɑːd/

The term "lightning rod" originated in the late 1700s when a British scientist named Benjamin Franklin conducted a series of experiments to understand the effects of lightning. Franklin hypothesized that by installing a metal rod on the top of a building and connecting it to the ground, lightning would be attracted to the rod rather than the building itself. This would prevent the building from suffering damage from lightning strikes. The term "lightning rod" was coined to describe this device, as it resembled a rod that would draw the lightning, much like a rod used to draw away rodents. The idea soon spread, and by the end of the 18th century, lightning rods had become a common feature of buildings, particularly in areas prone to frequent thunderstorms. Today, lightning rods, also known as lightning conductors, serve as an effective and essential safety measure during thunderstorms.

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a long straight piece of metal or wire leading from the highest part of a building to the ground, put there to prevent lightning damaging the building

một đoạn kim loại hoặc dây dài thẳng dẫn từ phần cao nhất của tòa nhà xuống đất, đặt ở đó để ngăn sét đánh làm hỏng tòa nhà

a person or thing that attracts criticism, especially if the criticism is then not directed at somebody/something else

một người hoặc vật thu hút sự chỉ trích, đặc biệt là nếu sự chỉ trích đó không hướng đến ai đó/vật gì khác