Dastāvard'hā-yi Fīzīk-i Nuvīn: Persiska (Farsi) 1399

Modern physics is a branch of physical science that developed in the early 20th century. The prominent branches of modern physics include quantum physics, special relativity, and general relativity. Classical physics is usually related to everyday conditions, for example: our speed is much lower than the speed of light, and atoms are very small and full of energy.... However, modern physics is concerned with more critical conditions such as high speeds comparable to the speed of light (special relativity), small distances comparable to atomic radii (quantum mechanics), and very high energies (relativity). In general, quantum and relativistic effects are believed to exist at all scales, although these effects may be very small in everyday life. While quantum mechanics is compatible with special relativity (see relativistic quantum mechanics), one of the unresolved problems in physics is the unification of quantum mechanics and general relativity, which the Standard Model (of particle physics) cannot currently address. The book "Achievements of Modern Physics" deals with these issues. And as is clear from its title, it has placed its main focus on the achievements of this new science. This book has collected a collection of opinions from experts in this field. This helps the audience to gain a wider understanding of this modern science.