More than 1300 pulsars have been discovered in the radio range. The overwhelming majority of them (up to 90%) have periods ranging from 0.1 to 1 s. There are pulsars with very small periods, less than 30 ms, the so-called millisecond pulsars. At the end of 1982, a millisecond pulsar with a period of 0.00155 s was discovered in the constellation Chanterelle. A rotation with such an astonishingly short period means that the star makes 645 revolutions per second. The famous pulsar in the Crab Nebula was previously designated NP 0531; it is now designated PSR J0535 + 2200 (the letter J indicates the coordinates are for the year 2000). Its period is 0.033 s. The neutron star makes 30 revolutions per second.
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.