عکس اول
Nuclear decay (Nuclear decay) is a set of processes that occur in the nucleus of unstable radionuclides and produce beams called radioactive beams. As a result of nuclear decay after a random time, large nuclei break down into smaller, usually more stable nuclei, and the raw material gradually disappears. However, the mass of the new material will be only slightly lower than the raw material and the energy released. Sometimes this energy can be harnessed as nuclear power or can be released by radioactive contamination into the ecosystem, which can be very risky. This process is one-step, meaning that the exact decay time of a given atom cannot be predicted, although its half-life can be determined.
عکس دوم
A refinery is a set of chemical process units that refines or converts raw materials into useful products.
عکس سوم
The metropolis, the metropolis, or metropolis, is the title used for large, populous cities. A metropolis usually consists of a central city and a number o
