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Why does every lock have a 'mysterious' small hole at the bottom?
If possible, try looking at today's newer locks to see if they have a small hole at the bottom?
Drainage
Browse ScienceInfo articles and explainers related to Drainage.
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Articles about Drainage
36 published items.
Environment
Floods in Dubai - Proof of failure in combating global climate change
Days after historic rain, Dubai is still submerged in floods - a profound example of how the world is losing the race
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Why is Lavabo's drainage pipe curved?
If you pay attention, you will see that the lavabo drainage pipe has a curved shape, the first part bends down and then goes upwards, what purpose does it do?
Archeology
Roman sluice can still be used after 2,300 years
The hundred-meter-long sewer system is in such a good condition that it can be used today for storm water drainage.
Archeology
Close up of the 4,600-year pyramid floating in the Greek sea
The object bearing the shape of a mysterious pyramid in the middle of the sea, has a stone staircase leading inside has revealed the secret of an ancient city.
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Explore the flood protection system of treasure walls in the world's No. 1 country
Normally, they are hidden beneath the road surface but when there is a flood, the flood water will push this barrier upwards, preventing the flow of water from outside f…
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How do major cities in the world seize and reuse rainwater?
Depending on how we receive it, rainwater may be a gift or a burden.
Environment
50 lakes were discovered under the Greenland ice sheet
The discovery helps scientists better understand the mechanism of drainage under the ice layer, affecting the effects of global warming.
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Why does hot lumps reconfigure water?
Water flow in hot water is one of the most common phenomena during use. However, this problem is not too serious but it is not comfortable for users.
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Tokyo pushes water down 'Pantheon Power on the ground', lake glides in the river
Tokyo has 107 large and small rivers, with a total length of 858km. In the snowy season, the water flow of these rivers rises, pouring into Tokyo Bay.
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Bangkok laid out 1682 channels and 25 flood-proof flood storage areas
Close to Vietnam, especially with Ho Chi Minh City: a river city. Not as spectacular as the Japanese, but the Thai people choose canals to resist natural flooding.
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Swimming pools help fishermen break world records
American scientists point out that swimming pools and swimming lanes have certain effects on athletes' performance.
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Unique architecture of the world's largest stone Buddha statue
The 71-meter-high Leshan Giant Buddha statue in China is considered the largest stone statue in the world, with a hidden drainage system in the body that helps the Buddh…
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Explore the huge sewer system in Tokyo
Flood drainage system in the heart of Tokyo, Japan is the largest underground sewer in the world, with huge vertical wells and more than 70 large capacity pumps.
Archeology
The culprit makes us infected with worms, lice are ... ancient Romans
Ancient Romans contributed to the risk of parasites such as worms, and lice increased significantly.