<code></code>Hello to all members of the Hive community. I shared this position with you to give a simple description of the waves that make up the school program I teach in high school. This concept seems abstract to our students, but in truth, it is present in several areas that I will cite a few.

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# 1) Electromagnetic waves
<code></code>On the one hand, these waves have facilitated technological communication and its progression, which translates into the transport of information. Plus for medical diagnostics.

<code><code><code><code><code><code><code><code><code></code></code></code></code></code></code></code></code></code>![image.png](https://images.ecency.com/DQmWcqS3R5qNvBggrXKQAdaDFzPoXSYbans3aVEtcWyTwB7/image.png)


<code><code><code><code><code><code><code><code><code></code></code></code></code></code></code></code></code></code>[Source](https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcTVLHMoTaVTj8tRHfFyz-R8bDHj0Ah-CxAD6A&usqp=CAU)
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<code></code>On the other hand, these effects are sometimes destructive, and this is based on scientific research which assumes that they can be the cause of cancers (use of laptops for example).

![image.png](https://images.ecency.com/DQmajcavb5FUioMJL7uEQ6DJVAFcnBZgcwYoQs7XJtJBy6p/image.png)

[Video](https://www.youtube.com/watch?v=LKGkmbz57ds)


# 2 ) Mechanical waves
* ## Seismic waves: 
their origin is a vibratory movement of the rocks at the bottom of the earth and is manifested by earthquakes at the surface.

![image.png](https://images.ecency.com/DQmQcwiDw8UEEj2tEgBMWdAzieoaJruPWwFyzVXAzLrVFtH/image.png)


[Source](https://i0.wp.com/universelmagazine.com/wp-content/uploads/2021/12/svt.2.inf1-2.png?resize=850%2C560&ssl=1)



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![image.png](https://images.ecency.com/DQmU4bjR6vvCeaNzCp7jmgZ55oshZLzpUJYorUzhmk5Fn58/image.png)

[Source](https://slideplayer.fr/slide/1200270/3/images/2/Diff%C3%A9rentes+ondes+sismiques.jpg)

* ## Mechanical wave on water surface: Water waves.
Waves are the result of a disturbance that spreads step by step on the surface of the water.

<code><code><code><code><code><code><code><code><code><code><code></code></code></code></code></code></code></code></code></code></code></code>![image.png](https://images.ecency.com/DQmSF4YQXna1U3ksirZ25wu1SndYBywwbzbzBhr5hXVKKtu/image.png)


<code><code><code><code><code><code><code><code><code><code><code></code></code></code></code></code></code></code></code></code></code></code>[Source](https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcR4OnxgBcZle-ELLLzWjRO6FA31-IcWcPuToam25fVKyqj-VFIeFTt4kAxzNkxvMUEDirE&usqp=CAU)




<code></code>In case there is a rapid movement of a large volume of water, the waves become very strong and powerful and thus lead to a destructive phenomenon: the tsunami

![image.png](https://images.ecency.com/DQmTnZzuMtYDueCwwpHSKkkVjZnS3xdLbVBmDDwKp8sYHZN/image.png)


[Source](https://www.serieously.com/app/uploads/2020/08/9-1-1.jpg)




* ## Sound waves.
These waves are a communication tool for some animals.

![image.png](https://images.ecency.com/DQmVtBLHpeEFkZkgKQukHtuzHnMcSLXpViVF2Mkwvqvnwy9/image.png)

[Source](https://tpechauvesourisultrasons.files.wordpress.com/2014/02/bats-and-dolphins-have-echolocation-capabilities.jpg)





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>For man, he uses these waves in a sophisticated device: Sonar, which allows the location of objects under water for the purpose of carrying out marine mapping, listening to noise in the case of wars.

![image.png](https://images.ecency.com/DQmSHE7PXGhxxoZLfrrKcZpKLUgHVDEwCKNj8VmjXmJWNCM/image.png)

[Source](http://nebula.wsimg.com/8beac95bbf7c7da37eb99a3d3cdc193a?AccessKeyId=9E00B107CAB4FDC823C9&disposition=0&alloworigin=1)

<code></code>
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>Modern cars also use sound waves to detect their surroundings.
![image.png](https://images.ecency.com/DQmefKRhTHsskFeYmGfgY65rgtavwfhao8S3iVnzjX5UFLn/image.png)

[Source](http://nebula.wsimg.com/55cf965f51f669ca6ea817c4b871d0fe?AccessKeyId=9E00B107CAB4FDC823C9&disposition=0&alloworigin=1)

## *Finally, I thank you for reading this article and commenting on it.*