Propagation of electromagnetic wave is a basic discipline that studies the propagation phenomena and laws of electromagnetic waves in the earth environment and the sun-earth env...
Jun 18, 2022
Nitroglycerin is the trinitrate of glycerol. It is an organic compound with the chemical formula C3H5N3O9. It is an explosive with strong explosive power.
Graben is a widely developed geological structure on the crust. It is a trough-shaped fault block structure surrounded by high-angle faults on both sides and descending in the m...
Jun 17, 2022
Horizontal movement refers to the movement of the earth's crust along the tangent of the Earth's sphere.
Asthenosphere is located under the upper mantle lithosphere (Lithosphere), with a depth of 80-400km. It is an endosphere layer with a basically global distribution.
Jun 16, 2022
Plate motion refers to the relative motion of one plate on the Earth's surface relative to another.
Crustal movement is the mechanical movement of the material that makes up the Earth due to internal causes. Crustal movement is a tectonic movement caused by the change of the c...
Jun 15, 2022
A meteorite crater is a ring-shaped crater formed by the impact of a meteorite on the surface of a planet, moon, asteroid or other celestial body. A central cone may form in the...
Shock metamorphism is the instantaneous metamorphism caused by the impact of cosmic matter on the earth's surface to produce high temperature and high pressure.
Jun 14, 2022
Coesite is formed under the ultra-high pressure metamorphism of tens of thousands of bars (1 bar = 10 to the 5th power Pa), and it usually takes about 80 kilometers underground ...
Quartz is a mineral composed of silica, with the chemical formula SiO2. Pure quartz is colorless and transparent, and exhibits various colors due to the presence of trace pigmen...
Jun 13, 2022
When polarized light passes through a solution of certain crystals or substances, its vibration plane rotates with the direction of light propagation as the axis, which is calle...
