The cesium fountain clock used by the research team. Image source: According to the official website of the European Center for Nuclear Research on the 1st, in a new study, the research team of the institution's antimatter factory combined cesium and anti cesium atomic oscillations and took the average value to measure the second with the most accurate measurement so far. It is defined as 8846157280 oscillations of cesium 13 atoms, which is 1 second. According to the new definition, a day will reach 24 hours, 56 minutes, and 24 seconds. The method of accurately measuring time has been improving. In 1967, scientists invented the first atomic clock. Due to the fact that atoms of the same element always have the same properties, using an atomic clock for timing is also more accurate. Within 138 million years, the atomic clock was only one second behind. In 1967, the 13th International Conference on Weights and Measures defined the second as: 9192631770 oscillations of cesium 13 atoms as 1 second. In the latest research, the research team used a cesium fountain clock, which is one of the most accurate clocks in the world. In addition to using this clock, researchers also used anti cesium atoms produced by anti matter factories and measured them. The results showed that their excitation frequency was lower than that of cesium: the oscillator needed to oscillate 8499682790 times to excite its atoms. By taking the average of matter and antimatter, the research team calculated that the cesium 13 atom oscillated 8846157280 times for 1 second, which is approximately 96% of the current definition. At present, there are 86400 seconds in a day, and using the new method, there are 89784 seconds in a day, which is equivalent to 24 hours, 56 minutes, and 24 seconds, approximately 25 hours. A spokesperson for the research team pointed out that it is time to update the definition of seconds with antimatter, which can offset some uncertainty and make measurements more accurate. In addition, using antimatter can slow down time, and researchers hope that the new measurement method can make people's lives easier. (New News Agency)