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The world's longest jellyfish: Arctic haze jellyfish tentacles are more than 40 meters long
Those who live by the sea must have seen jellyfish. They are relatively common underwater plankton, floating in a transparent manner, and are a beautiful creature. There are hundreds of different kinds of jellyfish in the world, do you know which is the longest jellyfish in the world? -
The world's longest-lived light bulb: surprisingly, the whole 120 years of light
The electric light bulb, also known as an incandescent lamp, is a lamp that is used to emit light through the use of electricity, using resistance to heat a young thin wire to incandescence. The emergence of the electric light bulb is one of the world's great creations, which brings endless light to people, but also to promote the world's progress. We usually use the electric light bulb, its life expectancy is about 1000 hours. The world's longest-lived light bulb, it is surprising that the whole 120 years of light, let us take a look at it. -
The world's steepest railroad: 3 miles long, with a maximum gradient of 48 degrees
Nowadays, people's communication space is expanding, and trains and high speed railways are essential. Nowadays, the railroads are open to the mountains and bridges, and the designers are pursuing a kind of flatness. But in foreign countries there is a railroad like a roller coaster, such a road can pass the car? The world's steepest railroad is in Switzerland, the full name of the Swiss Pilatus Mountain Railway, 3 miles long, the vertical drop reached 2073 meters, the maximum slope of 48 degrees, such a slope is very difficult for people to walk, let alone the train.