how many seconds in 24 hours?

One hour is equal to 3600 seconds, so to find the number of seconds in 24 hours, you can simply multiply the number of hours (24) by the number of seconds in one hour (3600). This gives you a total of 86400 seconds.

The concept of measuring time in seconds is based on the idea of dividing the day into smaller units of time for the purpose of more precise measurement. One second is defined as the duration of 9,192,631,770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the cesium 133 atom. This definition was established by the International System of Units (SI) in 1960 and is used as the standard unit of time worldwide.

In everyday life, seconds are used to measure short periods of time, such as the duration of an event or the interval between two events. They are also used in scientific and technical contexts to measure and compare very small intervals of time. For example, seconds are often used to measure the speed of light, the frequency of electromagnetic waves, and the accuracy of clocks and other timekeeping devices.