Scientific application
Cast iron technique from China
In the 3rd century BC, the Chinese discovered that it was possible to make cast iron flexible by annealing the casted iron that would not be too brittle, resistant to im…
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9,100 published items in this category and its subcategories.
Scientific application
Fuel from mushrooms
One day, mushrooms will gradually leave the table and be present in the fuel of cars. Shiitake usually grows on woody stems in forests, they decompose complex organic ma…
Scientific application
Use biological measures against insects
Over the past 1700 years, Chinese people have been effectively fighting insects with pure biological measures: using other insects to kill insects. Their most obvious su…
Scientific application
Currency in ancient civilization
Coins, as well as hierarchical relationships and domination, are not new things created today. It has existed in civilizations even more ancient than the basin civilizat…
Scientific application
Firework be like?
Basic materials for making fireworks are Pepper or match pepper, sulfur and wood charcoal. These compounds are pulverized and put a little powdered powder. But for the f…
Scientific application
Why does copper have many different colors?
Copper though is not widely used as iron and steel. But it has many advantages that iron and steel cannot match. Pure copper has extremely good electrical conductivity a…
Scientific application
Shellac (Shellac)
In Vietnam, pistachio is used for staining teeth, but in some countries in the region such as India and Thailand, the production of pistachio plastic for export since se…
Scientific application
The back of the mirror is silver or mercury?
The day before the production of mirrors, people stuck behind the mirror of a tin film, then poured mercury. Because mercury can melt tin, forming a sticky white solutio…
Scientific application
Why does the word written in blue ink turn black?
If you use a blue and black ink to write a diary, you will find that the text written today is blue, and the text written yesterday was black. That phenomenon is the res…
Scientific application
Experience for the right apricot blossom for Tet
How do flowers bloom right on Tet? That's the permanent question of gardeners, because flowers bloom right on Tet, which means they will be sold.
Scientific application
The technique of raising chickens in our gardens is highly effective
The model of raising chickens in our gardens is developing strongly in many localities in the country initially, the model has brought high efficiency for many household…
Scientific application
Techniques for growing the scallop orchids in pots
Currently, the lake orchids are becoming the flowers with the greatest demand and are widely used. However, unlike the current concept, this flower planting technique is…
Scientific application
Techniques for growing stone lotus in pots
The technique of planting stone lotus flowers is extremely simple and there is no special requirement for planting equipment, in addition the stone lotus is also very ea…
Scientific application
Planting techniques and care for many gourds
Thanks to the possession of a technique that is not too complicated, the tree truss has the effect of creating shade and is a raw material for many delicious dishes, so…
Scientific application
Technical installation of indoor and outdoor electricity and lines for small hydroelectricity
In order to limit electrical accidents, people should pay attention to the basic regulations on installation of domestic electricity and some measures to ensure safety w…