What is the shortest time interval that a person can perceive?

Looking at this person, the visual persistence phenomenon of ordinary people's eyes seems to have been heard before that it is greater than seconds, and it seems to be around seconds, because taking our household appliance lamps as an example, alternating current.

The frequency is 50 Hz, that is, the light flickers on and off in 1 second, a total of 50 times, the average is a second, which is much smaller than the human visual retention second, so you can't see the light flickering and flashing, and I think this visual persistence phenomenon should be the shortest time interval that ordinary people can perceive.

Vision: about 30 milliseconds. Haptics: about 10 milliseconds. Hearing: about 2 milliseconds.

Note that the above time is the test's perception of the shortest time interval, not the test reaction time.

When two events occur less than n milliseconds apart, we assume that they occur at the same time. Because we can't tell the order anymore.

ThisThe time interval is actually "the shortest time you can perceive".。This time is much shorter than the reaction time in the general sense. ThisThis is completely different from the concept of "minimum reaction time at the start".

Since the 19th century, people have done many experiments**This, the first scientist to do this is called Sigmund Exner.

The experimental process is roughly as follows: using a special device to create two electric sparks one after another, and constantly shortening the time interval between the electric sparks, to see how small this interval is, in his opinion, the two electric sparks appear at the same time. (The result of EXNER was 44 milliseconds, and later in other people's experiments, there were more than 30 milliseconds, and there were 20 milliseconds).

It is difficult for people to accurately recognize and perceive time.

Time will always be distorted in us, either we think that time will pass very fast, or we will feel that time will pass very slowly, and when will we feel that time will pass too fast?

There are several cases: with the person you like when a spike rises.

When you are engrossed in doing things and studying, when the task deadline is coming but you don't complete it, when you are dying, you recall your life, and when you feel that you haven't done anything, the most common thing is that at the end of the day, as soon as you summarize yourself, you don't get anything, you will lament: this Huihuai day time flies really fast, just like when we watch TV, watch**or brush short**, time passes quickly in a blink of an eye, and then when we calm down, we will be very annoyed, oops, this day's time is wasted, At this time, it will feel like time flies quickly.

There is a saying that order is the first law of heaven, and a planned study, normalizing life, working and resting on time, arranging diet carefully, and exercising on time will allow us to correctly understand the time and feel that Bi Lao knows the time.