# Unexplained Object Movements: What Causes Random Movements Without Force?"

• B
• albertrichardf
In summary, the conversation discusses the phenomenon of objects falling or moving seemingly without any external force. The speakers mention possible causes such as imperceptible changes, temperature changes, and brownian motion. They also mention the concept of equilibrium and how it can be disrupted by various factors. Overall, the conversation highlights the complexity of real systems and the many variables that can affect them.
albertrichardf
Hello
This is a rather weird question but anyway...
Have you ever seen something just fall for no apparent reason? Its rather stable for some time and then suddenly it falls or moves? And you haven't touched anything. There is no wind. Nothing
What causes that?
It seems pretty strange, because there needs to be a force to make objects fall. I know there is gravity pulling it, but if it is balanced now, why would it not be balanced later?
Any idea what causes that?
Thanks

What one perceives as a stable, motionless object often is not. So, there are tiny imperceptible changes that occur that eventually result in the topple. This can be as "hidden" as a temperature change causing a slight expansion of the object, thus overcoming a former point of friction.

russ_watters, CWatters and albertrichardf
rumborak said:
What one perceives as a stable, motionless object often is not. So, there are tiny imperceptible changes that occur that eventually result in the topple. This can be as "hidden" as a temperature change causing a slight expansion of the object, thus overcoming a former point of friction.
I see. Thanks for the explanation

@rumborak 's answer is a good one.

Think of a tree falling in the forest, or a sudden landslide on a mountain.

Real systems can't always maintain equilibrium because of the enormous number of variables to account for

This happens sometimes in a dish rack if things are piled up. As the dishes dry over time, an item can move as the forces on it are no longer balanced in its initial position.

In the case of a tree fruit, it is ripening over time, or drying or something, but the process is slow, so you view it as static, until it suddenly falls. On a microscopic scale, nothing is stationary. Take a look at https://en.wikipedia.org/wiki/Brownian_motion
At temperatures above absolute zero, you have molecules randomly moving around. These bump into larger objects and can cause the larger objects to move around a little bit. If the object is near a precipice, it could get knocked over by a small force.

Albertrichardf said:
Real systems can't always maintain equilibrium because of the enormous number of variables to account for

So how many variables can real systems account for? Just kidding.

albertrichardf
I was actually thinking of brownian motion as a cause for random movement. It's always interesting to see how the invisible will come to play into the visible when you least expect it.

## What is the definition of unexplained object movements?

Unexplained object movements refer to the occurrence of random and seemingly spontaneous movements of objects without any apparent force or outside influence.

## What are some examples of unexplained object movements?

Examples of unexplained object movements include objects moving on their own, objects falling off shelves without being touched, and objects changing position without any visible cause.

## What are some possible explanations for unexplained object movements?

Some possible explanations for unexplained object movements include paranormal or supernatural forces, environmental factors such as air currents or vibrations, and the misinterpretation of natural phenomena.

## How do scientists study unexplained object movements?

Scientists study unexplained object movements through controlled experiments, observation of case studies, and the use of scientific instruments to measure and analyze any potential forces or influences on the objects.

## What are some practical applications of studying unexplained object movements?

Studying unexplained object movements can help scientists better understand the laws of physics and natural phenomena. This knowledge can also be applied in fields such as engineering and technology to develop new methods for controlling movement and preventing accidents or damage caused by unexplained object movements.

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