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Interesting things only in Japan
Japan is famous as a country with many unique cultural features, making tourists surprised and excited.
Manhole
Browse ScienceInfo articles and explainers related to Manhole.
Topic archive
Articles about Manhole
14 published items.
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The reason for manhole covers is usually round
The manhole cover in a round shape allows easy installation, transportation as well as preventing risk of leakage.
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7 fastest objects humanity ever built
With the development of science and technology, mankind has created many fast-moving objects that surpass imagination
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Seeing strange manholes in the yard, crawling down to discover the majestic secret
The secret Lisa just discovered is not just a regular bomb shelter.
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Why are manhole covers designed circularly?
With a circular structure, the top-down force will be dispersed evenly across the surface to help the manhole cover be affected.
Biology
Decode the fragile genome
The identification of more than 800 genes involved in the practice of singing of manholes can shed light on human language disorders.
Animal world
The truths always amaze you about the biological world
The natural world always surprises us, and the facts in this article will make sure you understand it.
Animal world
Birds also like the 'petition subject'
Low-grade females will also like low-level males, at least in the bird world ...
Animal world
Evidence of memories in the brain of songbirds
When a manhole hears a new melody from a member of the same species, the gene expression in its brain changes surprisingly, the researchers report.
Scientific application
New style septic tanks can be attracted from a distance
Septic tank, designed and manufactured by Ba Ria - Vung Tau Urban Drainage Company, is made of precast concrete, there is an inspection pit located outside the house. Wh…
Environment
Mysterious green foam extruded from the American sewer cap
Bluffdale residents, Utah, in the United States were shocked when they saw a substance like a green soap foam extruded on the manhole on July 21.
Photo library
Animal photos last week: Squirrels stuck in the sewer cap
Baby squirrels stuck in the manhole cover, small bird sleeps weekly to flirt with mates, sea dragon fish in fish tanks, seagulls wingspan on the lake, bison drinking wat…
Videos
Video: The secret of art of making New York sewer cover
The workers behind the manhole covers in vintage style
Science invention
Smart drain cover can be anti-theft
A high-tech company in China's Zhejiang province introduces smart drain covers that can prevent theft and reduce noise.