How many milliseconds are in 1 second?

One second is equivalent to 1,000 milliseconds because the prefix "milli" in the metric system denotes a factor of one thousandth (1/1000). Therefore, to convert seconds to milliseconds, you multiply the number of seconds by 1,000. Since the question asks for the number of milliseconds in one whole second, it results in 1,000 milliseconds. This fundamental conversion is crucial in various fields, including radiology and medical imaging, where timing and precision are vital. Understanding this relationship enables operators to work effectively with time-sensitive measurements in their practice.