What is MODERN PHYSICS? What does MODERN PHYSICS mean? MODERN PHYSICS meaning - MODERN PHYSICS definition - MODERN PHYSICS explanation. Modern physics is the post-Newtonian conception of physics. It implies that classical descriptions of phenomena are lacking, and that an accurate, "modern", description of nature requires theories to incorporate elements of quantum mechanics or Einsteinian relativity, or both. In general, the term is used to refer to any branch of physics either developed in the early 20th century and onwards, or branches greatly influenced by early 20th century physics. Small velocities and large distances is usually the realm of classical physics. Modern physics, however, often involves extreme conditions: quantum effects typically involve distances comparable to atoms (roughly 10−9 m), while relativistic effects typically involve velocities comparable to the speed of light. In general, quantum and relativistic effects exist across all scales, although these effects can be very small in everyday life. In a literal sense, the term modern physics, means up-to-date physics. In this sense, a significant portion of so-called classical physics is modern. However, since roughly 1890, new discoveries have caused significant paradigm shifts: the advent of quantum mechanics (QM) and of Einsteinian relativity (ER). Physics that incorporates elements of either QM or ER (or both) is said to be modern physics. It is in this latter sense that the term is generally used. Modern physics is often encountered when dealing with extreme conditions. Quantum mechanical effects tend to appear when dealing with "lows" (low temperatures, small distances), while relativistic effects tend to appear when dealing with "highs" (high velocities, large distances), the "middles" being classical behaviour. For example, when analysing the behaviour of a gas at room temperature, most phenomena will involve the (classical) Maxwell–Boltzmann distribution. However near absolute zero, the Maxwell–Boltzmann distribution fails to account for the observed behaviour of the gas, and the (modern) Fermi–Dirac or Bose–Einstein distributions have to be used instead. ... https://www.youtube.com/watch?v=0cKJJDnIewg

What is HOLESHOT? What does HOLESHOT mean? HOLESHOT meaning - HOLESHOT definition - HOLESHOT explanation. The holeshot is a motorsport terminology to describe a driver who has the strongest start to get up to racing speed. It is usually the driver who leaves a starting area first from a standing start (stopped position). The term is used in motorcycle racing, off-road racing (but also motorsport racing in general) for the rider who is the first one through the first turn. In some cases a holeshot award will be given, which is a prize separate from winning the race. Many motorcycle racers consider the start to be the most important part of a race, and it is particularly important in those forms of the sport where the tracks are very small, tight and difficult to pass on. This is particularly relevant in motocross where racers line up alongside each other rather than behind each other in tarmac-based sports. The term had also found its way into bicycle motocross racing (BMX) by the early 1970s because BMX is a bicycle derivative of motorcycle motocross and has inherited many terms from that sport. In BMX the holeshot is even more important since BMX races are single lap 25 to 45 second races with only a few opportunities to pass in that time period. Achieving the holeshot in BMX will earn the rider a victory the majority of the time. This term can also be used to describe the starting performance of a vehicle. A vehicle that is fast off the line (though not necessarily fast overall) is said to have a good "holeshot". ... https://www.youtube.com/watch?v=sQFGoYiJnCg

What is FREQUENCY STANDARD? What does FREQUENCY STANDARD mean? FREQUENCY STANDARD meaning - FREQUENCY STANDARD definition - FREQUENCY STANDARD explanation. A frequency standard is a stable oscillator used for frequency calibration or reference. A frequency standard generates a fundamental frequency with a high degree of accuracy and precision. Harmonics of this fundamental frequency are used to provide reference points. Since time is the reciprocal of frequency, it is relatively easy to derive a time standard from a frequency standard. A standard clock comprises a frequency standard, a device to count off the cycles of the oscillation emitted by the frequency standard, and a means of displaying or outputting the result. Frequency standards in a network or facility are sometimes administratively designated as primary or secondary. The terms primary and secondary, as used in this context, should not be confused with the respective technical meanings of these words in the discipline of precise time and frequency. ... https://www.youtube.com/watch?v=qCP9KPoyw7o

What is SPECTRAL COMPONENT? What does SPECTRAL COMPONENT mean? SPECTRAL COMPONENT meaning - SPECTRAL COMPONENT definition - SPECTRAL COMPONENT explanation. In telecommunications, spectral component is any of the waves that range outside the interval of frequencies assigned to a signal. Any waveform can be disassembled into its spectral components by Fourier analysis or Fourier transformation. The length of a pulse thereby is determined by its complex spectral components, which include not just their relative intensities, but also the relative positions (spectral phase) of these spectral components. ... https://www.youtube.com/watch?v=I6208dSV_3Y