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Ultimate tensile strength (also called UTS, tensile strength, TS, ultimate strength or in notation) is the maximum stress that a material can withstand while being stretched or pulled before breaking. In brittle materials the ultimate tensile strength is close to the yield point, whereas in ductile materials the ultimate tensile strength can be higher.

Electromagnetic spectrum. The electromagnetic spectrum is the range of frequencies (the spectrum) of electromagnetic radiation and their respective wavelengths and photon energies . The electromagnetic spectrum covers electromagnetic waves with frequencies ranging from below one hertz to above 10 25 hertz, corresponding to wavelengths from ...

The oldest material found in the Solar System is dated to 4.5682 +0.0002−0.0004 Ga (billion years) ago. By 4.54 ± 0.04 Ga the primordial Earth had formed. The bodies in the Solar System formed and evolved with the Sun. In theory, a solar nebula partitions a volume out of a molecular cloud by gravitational collapse, which begins to spin and flatten into a circumstellar disk, and then the ...

Guinea is named after the Guinea region which lies along the Gulf of Guinea.It stretches north through the forested tropical regions and ends at the Sahel.The English term Guinea comes directly from the Portuguese word Guiné which emerged in the mid-15th century to refer to the lands inhabited by the Guineus, a generic term for the black African peoples south of the Senegal River, in contrast ...