Why does it rain more when it rains?

This is a very interesting question, and I will try to share my answer with you, and I hope to share it with you. First of all, let's use Li Yongle.

The physical model set by the teacher must also add another premise: the person must stand perpendicular to the ground and cannot be tilted, because if the human body is tilted, then the front area of the human body s1 and the equivalent overhead area s2 will change. In this ideal case, the raindrops are evenly distributed throughout the rain zone space.

Obviously, the only areas that can be touched by the rain are the top of the head and the front of the human body. The time of man in the rain is t=l u, and we analyze it in two aspects.

It really depends on two big premises, not a matter of running or walking.

First, the amount of rain on the human head is m2 = (s2)vt = (s2)vl u, and it can be seen that the greater the speed u of the person, the smaller the amount of rain m2 on the head.

Second, analyze the amount of rain in front of the human body, because we have preset the model under the ideal situation, so the distribution of raindrops in front of the human body is uniform and the total amount is unchanged, and the human body is a real physical body, when the person goes from point A to point B, the raindrops in the entire front space will all fall to the front of the human body, and the total amount of rain has nothing to do with the speed of the person, but only the density of raindrops in the space, in other words, The number of raindrops that you take 1 second to pass AB is the same as the number of raindrops that fall on your body in front of you in 1 hour, i.e. m1 = (s1)l.

It really depends on two big premises, not a matter of running or walking.

The first premise: the amount of rain is the same. That is, to run or walk, it is a choice made when the rainfall is exactly the same.

The second premise: the distance is the same. From A to B, it is to run or walk, the distance and route are exactly the same, otherwise there is no comparison, in the case of rain, run 1 km and walk 10 meters, who gets more rain?

The answer is obvious. And the distance should not be too short, such as 10 centimeters, then it is meaningless to run or walk.

If these two major premises are exactly the same, then a fool will understand, it must be more rain while walking, because he takes more time, and the amount of rain per unit of time accumulates more rain than running, there is no doubt about it.

Based on the above two analysis, it can be seen that running in the rain is less rain than walking, because the time spent in the rain is shorter, but the amount of raindrops on the body façade will not change.

If you walk, your body will roughly become a "human" shape, and judging by the vertical fall of rainwater, only a small part of the head, shoulders, and legs will be wet. If you run, your body will be roughly in a "square" shape, and your head, shoulders, arms, thighs and calves will be poured over the rainwater falling vertically. So I think it's less wet when you go.

When it rains, the rain is diagonally hit on the body, and the rain area is large, divided into many situations, and it is rare to run more in theory.

Running in the rain will cause the wind to blow and tilt, and then cause the raindrops on the body to increase, and the bearing area will increase.

Because running has a larger area exposed to rainwater.

Judging by the vertical fall of rainwater, the head, shoulders, arms, thighs and calves will be watered. So I think it's less wet when you go.

Running is equivalent to increasing the area of rain.

This is because you are running against the wind.

There are many situations, and it is rare that there will be more runs in theoretical cases.

The question is clear, it depends on the specific situation? If it's raining heavily, running in the rain may experience more raindrop density than walking in the first 5 minutes, and running in the rain will have to experience more rain than walking. After 5 minutes, it was almost the same as the body, and there was not much difference.

When it is drizzling, the rain is not too small, and there may not be much difference between walking and running. Although there may be a little more raindrops on your body when you run than when you walk, the effect is not obvious. Shouting in the drizzle, walking in the drizzle, can be a treat.

The drizzle and breeze, the flowers and trees are green, the heart is calm, and the walk in the rain, bit by bit in the heart, is indeed very pleasant.

When it rains heavily, people always rush to avoid the rain so that they don't get caught in the rain, so good people always try their best to avoid the heavy rain. There are still some people who are walking past Sun in the heavy rain and fierce defeat. Different people, different ideas, different psychology.

The moment they experience is not something that we can all imagine, we can't look at their things with our eyes, it is possible that they are experiencing something else in their hearts, give them a little free space, let them go through and let go of it by themselves.

There will always be rain in life, heavy rain or light rain, and this is a natural way for you to experience. It's better to take it easy, someone to accompany you, an umbrella, can leave a branch chain to give you a little space, your world is enough. Outside the umbrella, the wind and rain were blowing, and thunder and lightning were shining.

Your world is quiet, and all is well. Wow.

<> reasons are as follows: 1. When the rainfall is infinite, the rainfall is also infinite;

2. The rainfall is very small, the rainfall area is regarded as invariant, and the rainfall is only related to the time, the longer the time, the greater the rainfall;

3. Suppose from walking to running, the rain area increases by 3 times. As long as you run faster than you can walk, you will get less rain if you choose to run. When the rain becomes heavier, i.e., the amount of rain is not a fixed value but a variable, the running speed is less than 3 times the walking speed, and the rain exposure may also be reduced.

When the rain is getting lighter and lighter, choose to walk slowly to reduce the amount of rainfall;

4. When the velocity is infinite, the amount of rain is infinitely close to zero. When the velocity is infinitesimal and the amount of rain tends to be infinite;

There are two reasons why running on a rainy day is more rainy than walking:

1. For the rain in front of you, it has nothing to do with speed, no matter how fast you go, it will rain all the rain in one volume. (Even though the rain will fall, but the same amount of rain is added in front of you, then you can see that the rain is suspended in the air, so the amount of rain you are showering is proportional to the volume of space you brush (the density of raindrops is constant)).

2. For the rain directly above, it is only proportional to your rain time, you are in any position, there is so much rain on you per unit time, so to reduce the rain above, you must shorten the exposure time, then, the faster you reach the destination, the less time you consume, the more you can reduce the rain above.

But if you don't have an umbrella and walk a long distance, you need to calculate whether the amount of rain you can reduce by running hard is worth it, and in the case of long distances, it doesn't matter if you run or not when the fixed amount of rain in front of you is enough to make you soak.