Tantalum carbide (TaC) is an extremely hard (Mohs hardness 9-10) refractory ceramic material commercially used in cutting tool tips. It is a heavy brown powder, usually processed by sintering, and is an important cermet material.…
How serious are fertility problems today? People don't want to give birth,can't afford it, and can't give birth that has become the "three mountains". The problem of childbirth is related to the people's livelihood. Whether a country can prosper or n…
As the world deals with potential supply shortages, oil prices are soaring again, with more dramatic spikes and sudden drops expected.For consumers, that means more expensive gas for longer - prices at the pump remain above $4 a gallon. For the econo…
Diamonds are forever, Gold is precious but which is rarer? Gold is a heavy metal formed during the collision of neutron stars and is one of the rarest elements on Earth.During the formation of the earth, heavy elements gradually accumulated towards t…