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VISUAL (OPTICAL) ILLUSIONS
Visual (optical) illusions / Pattern recognition

Pattern recognition. Encyclopedia of visual illusions

At leisure / Visual (optical) illusions

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If you do not know what is depicted in these drawings, then it is almost impossible to see the drawing. However, if you know what is drawn, then it is very easy to see the drawing.

What is shown here?

Visual (optical) illusions / Pattern recognition

 


 

Camouflage body art

Visual (optical) illusions / Pattern recognition

 


 

Experiment

Visual (optical) illusions / Pattern recognition

In 1983, the BBC conducted an experiment by asking viewers to describe what they saw in this picture. This experiment was needed to confirm Professor Sheldrake's theory of how people's opinions can influence each other. The more people who expressed their opinion about what is depicted here, the easier it was for other people to reveal the meaning of the picture. What do you see in the picture?

 


 

What is this?

Visual (optical) illusions / Pattern recognition

 


 

What is this?

Visual (optical) illusions / Pattern recognition

 


 

Can you read this inscription?

Visual (optical) illusions / Pattern recognition

 


 

Whose faces?

Visual (optical) illusions / Pattern recognition

Visual (optical) illusions / Pattern recognition

Visual (optical) illusions / Pattern recognition

Visual (optical) illusions / Pattern recognition

Visual (optical) illusions / Pattern recognition

If you can't see it right away, try stepping away from the monitor.

 


 

Then tell me who is in this picture:

Visual (optical) illusions / Pattern recognition

 


 

Table for checking vision.

Increase the distance from the table until it is readable.

Visual (optical) illusions / Pattern recognition

 


 

What is this?

Visual (optical) illusions / Pattern recognition

 


 

Unusual picture

Go to the monitor on the right side and look at this picture from the side (under people's feet). The level of your eyes should be in the same plane with the monitor screen and at the height of the head of a man in black. The flatter your monitor, the more likely you are to see something interesting.

Visual (optical) illusions / Pattern recognition

 


 

optical illusion

Visual (optical) illusions / Pattern recognition

 


 

Just stripes?

Visual (optical) illusions / Pattern recognition

Do you see a famous cartoon character here?

 


 

Do you see the famous painting here?

Visual (optical) illusions / Pattern recognition

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Random news from the Archive

Fiber optic network as an earthquake predictor 30.10.2017

Earthquakes are one of the most destructive natural disasters. Sometimes even a few minutes of warning about them can be decisive. And now Stanford scientists have come up with an interesting proposal on how to create a truly global network for early earthquake detection.

Now such a system requires the installation of highly sensitive sensors that will measure the slightest tremors that can signal that a major disaster is near. But standard sensors can't cover everything, so a group of Stanford scientists came up with another solution: a fiber optic network.

Fiber optic cables transmit information at almost the speed of light and are used by telecommunications companies around the world. But they are also used by oil and gas companies to monitor small shocks caused by drilling equipment. With such measurements, a characteristic of cables called "backscatter" is needed, with the help of measuring the movement of cables and recording seismic events.

There is a laser at one end of the cable that sends out light. Part of the light hits impurities and defects in the glass walls of the cable and is reflected: this is the "backscatter" that was discussed. The signal received under such conditions can change depending on whether the part of the cable where the reflection occurred was moving, and fixing such signals can give scientists a map of seismic activity over a large area.

Typically, fiber optic detectors are attached to pipes or other equipment, but to detect earthquakes, researchers need loose cables, which is considered almost impossible, as most people think a loose cable will generate too many signals to be useful.

But by using a five-kilometer cable on the campus of the university itself, the researchers demonstrated that optical fiber is suitable for such purposes. With their network, they were able to detect about 800 seismic shocks, including an earthquake in Mexico and two small local earthquakes of 1,6 and 1,8.

This means that scientists can detect earthquakes using the already existing fiber optic network of communications companies. Of course, such cables are not as sensitive as traditional seismometers, but they are much cheaper and provide more area coverage.

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Anarbek Nurumzhanovich
Cool ... Sometimes sometimes it's not clear. [?] [!]


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