At night, I heard the sound of beads falling from the roof.

The scientific analysis is the sound caused by the stretching of the steel bar after the aging of the house.

Someone must have run to the roof of the building to play with the horn, the ghost thing will only appear if you believe it, and you will be scared of yourself if you have a ghost in your heart, so don't believe it.

Haha, the student days are really good, I used to be in college when I was in the dormitory at night everyone often took turns to tell ghost stories, and in the end, the more everyone talked about it, the more scared they became, and the next day they bought a little black dog and came back to raise something, thinking about it is really retarded. Poor every time we go to class or leave the dormitory, which little black dog baby is so lonely in our dormitory.

It's so pathetic. It's all afraid of ghosts, so don't believe or discuss anything.

The ghost is so scary,,, don't look at the window at night, and don't go to the side, if you suddenly probe out... Wow... How scary.

That's one of the things in the world that can't be explained.

Child, knowing too much is not good for you....

Reason: Probably speaking, due to the aging of the cement, under the action of moisture that penetrates into the ground, tiny cavities will be generated, and there may be particles or small cement balls in the cavities, and they will make sounds.

This is the sound when the sound source is in the ceiling. When you appear on the surrounding wall, most people will think that the next door is hammering nails or something. On the ground, due to the presence of furniture and other debris on the floor, the acoustic structure has been changed, and we usually can't hear it (it is said that we can still hear it when lying on the floor).

In addition, when the sound source is on the ceiling, the sound can be heard very clearly because the room is like a large speaker that amplifies the sound.

It could be due to the following reasons:

Floor leakage, which is the sound of water dripping onto the floor;

the sound of a child's marbles hitting the floor;

the sound of toys or small steel parts falling on the floor;

You can go upstairs to check it out.

Atheism: Broadly speaking, atheism is the sum total of ideas that do not believe in the existence of all ghosts, gods, or spirits; In a narrow sense, atheism refers to the idea that ghosts and gods do not exist.

Atheism is often confused with anti-theism, which is a rejection of theism, and anti-theism, which is a direct and explicit rejection of theism. The definition, connotation, and extension of God are different. Time, space are defined differently.

There is a superstitious saying, I don't know if it's true or not! I heard the sound of beads falling upstairs, but it was actually the eyes of ghosts (ghosts) falling to the floor!

You're dead. I've heard about this for a long time. It's a child's ghost playing marbles upstairs. Pick it up. Throw it down again. Repetitive movements. Are you too tired from work. Haunted.

Why is there always the sound of marbles falling to the floor upstairs in the middle of the night? After reading it, I have been puzzled for many years.

Do you say that the rural brick houses of the 80s had reinforced concrete? Why can I hear it, so I want to hear your questions again.

It's because the thin steel bars are bouncing in the steel pipes!

I really ran upstairs to play marbles, and found that the sound was almost inaudible, and it was not a supernatural event!

It is an incomplete fungus that mainly corrodes industrial materials and cement, and is better to grow on porous surfaces and feed on minerals in cement.

Generally, the ceiling is supported by two layers of fine steel bars, in fact, the steel bars are not straight when grouting, and the flow and weight of the cement slurry may have upward or left and right stress accumulation, or the house is built for several years by the ** or small displacement of the foundation and other factors, and the fine steel bar will produce new stress.

In the lower layer of the ceiling, there is a pipe outlet of the electric light line, there is temperature and air, etc., so the mold will gradually invade the cement along the hole, and the contact surface between the fine steel bar and the cement is the ideal seam, and the mold will accumulate here, and the mycelium will begin to erode into a hollow pipe around it. When the surrounding cement of a stressed steel bar is eroded to a certain extent, it will bounce back and forth in the hollow pipe, which is the sound of marbles.

I knew that he QQ asked on the Internet. If you don't know, you can go to the door, neighbors, move around more, and contact more.

Thermal expansion and cold contraction. 1. This is because the temperature rises during the day and the rock is heated, and the temperature of the void in the middle of the building pipe becomes lower at night.

2. Mental pressure, modern people's work and life are more stressful, and insomnia may occur at night, so there may be auditory hallucinations, and marbles will be heard at night.

3. Cement cavities, many of the floor slabs are now reinforced concrete pouring, because of the material, thermal expansion and contraction, moisture or insects and other problems, there will gradually be small cavities in the middle of the cement. At this time, if the thin steel bar, which had been twisted, was released, it would continue to blow many times in the cement cavity, and the force would gradually weaken until it finally stopped, like a glass bead falling to the ground and slowly becoming silent.

4. The sound in the perforated slab, the perforated slab is the partition in the floor slab, which will be used in general buildings, and has the characteristics of many holes, heavy weight and stability. The inner wall of the perforated plate will crack out small stones or concrete pieces due to the action of steel bars, and if these small pieces bounce on the inner wall of the perforated slab, there will be a marble sound.

In the past, when I watched TV, there was an explanation that the thermal expansion coefficient of the steel and cement in the building was different. In the middle of the night, the temperature drops, and the steel and cement (and maybe the bricks) shrink together, but the distance of the contraction is not the same, and there are various movements between the two components, and then there is a sound.

It doesn't seem hard to see, I've heard it at a friend's house.

I use the kind of curtains that pull the curtains, and there is a rod underneath them, and when the wind blows against the wall, it makes this sound.

Haha There are two versions of this question1 Superstitious version, which is the sound of a ghost's eyes falling to the ground. 2 Scientific version, ah is the micro-deformation of the thermal expansion and contraction of the steel bars between the floors, and the floors are like a big sound, amplifying the sound made by the deformed objects.

It may be the sound of roof debris falling onto the ceiling and smashing it, but you only hear it at night and early in the morning because these two times are quieter and you are not focused on other things, and there should be sound during the day, but it is muffled by the noise, and it is fine. Hope to adopt, thank you.

If you encounter this situation once or twice, it is normal, there may be someone upstairs playing, of course, if it is basically heard every day, but upstairs is not inhabited or playing this kind of game, which can also be explained by natural self-study, simply put, it is closely affected by the house and the surrounding environment, the height and density of the surrounding buildings, it can lead to the "refraction" and "accumulation" of sound. When I wake up in the dead of night, I often hear the sound of "plop, plop", as if coming from the wall. Much like the sound of a human heartbeat.

The principle is the same as marbles.

Don't you live on the top floor of your family? Why is there a sound upstairs?

The upstairs floor is too thin, and there will be this sound when something falls to the ground upstairs, and my family often does this, I have a deep understanding of it, so I can only call the upstairs attention.

It's a delusion, and I hear it sometimes.

In fact, the sound of glass beads falling to the ground is not the real glass beads falling to the ground, this is because our ceiling is relatively long, the normal sound will be emitted, the real glass beads fall to the ground, and the sound will generally not be heard downstairs.

The sound of this glass not falling is not that there are really glass beads falling upstairs, but because there is a parasitic mold in the cement slab, and these molds make the steel bars in the floor slab have a small displacement, so the sound of the glass beads falling to the ground is actually the sound of the steel bar displacement.

Sometimes when you live on the top floor, you can still hear the sound of glass beads falling to the ground on the roof, it may be an echo, it may be the sound of the next floor coming here, after all, the surrounding environment is relatively quiet. It's also possible that something has fallen on the roof.

I think you can still hear the sound of glass beads falling to the ground on the top floor, maybe not from the top floor, maybe from next door.

Because sound can be transmitted, it can be transmitted through a fixed medium, and through vibration, it can reach your home.

There may be a child playing with glass beads on the roof of the building, accidentally falling on the ground, and then transmitting the sound to your house, or the sound made by your house and then echoing.

Are you sure it's the sound of glass falling to the ground? Maybe it's something else! If it's really the sound of glass falling to the ground, it doesn't have to be from the roof, so I recommend you listen carefully.

This should not be the sound of real glass beads falling to the ground, but the sound of the cement on the roof floor cracking slightly after sun exposure, but this is a normal phenomenon, don't worry.

Living on the roof of the building, there should be no real sound of glass beads falling to the ground, it may be some sound made by the ceiling for a long time, there must be something coming out, and there is no need to think about it.

Because there are many sounds that are made by the physical reaction of the cement layer over the years, it is also possible that someone is playing with a glass ball next door.