Radio Waves & Penetration: Why Can They Pass Through Walls?

In summary, radio waves are able to pass through walls due to their longer wavelength and lower frequency, which allows them to penetrate obstacles. The thickness of the wall also plays a role in determining how the electrons will interact with the radio waves. In contrast, visible light is unable to pass through walls due to its shorter wavelength and higher frequency.
  • #1
Bassel AbdulSabour
8
0
Why do radio waves pass through walls while visible light can't?
I guess this has something to do wit the wavelength. What I know is that higher wavelength means higher ability of penetration. So why radio waves penetrate obstacles?
 
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  • #2
Bassel AbdulSabour said:
I know is that higher wavelength means higher ability of penetration. So why radio waves penetrate obstacles?
Think about what you've just said; do you still have a question?:wink:
 
  • #3
Bassel AbdulSabour said:
something to do wit the wavelength.
Actually it's both the frequency and the thickness of the wall in wavelengths. The electrons in the wall will interact very differently at different EM frequencies, depending on the actual material used and you can either get reflection or absorption of a wave. In general, though, you can say (obvs) that a thicker wall will screen better than a thin one.
 

FAQ: Radio Waves & Penetration: Why Can They Pass Through Walls?

1. How can radio waves pass through walls?

Radio waves are a type of electromagnetic radiation that has a longer wavelength and lower frequency than visible light. These waves have the ability to pass through walls because they have a low energy level and are not easily absorbed by solid materials. Instead, they are able to travel through the spaces between the atoms and molecules of the wall material.

2. Are there any factors that affect the penetration of radio waves through walls?

Yes, there are several factors that can affect the penetration of radio waves through walls. These include the thickness and composition of the wall material, the frequency and power of the radio waves, and the distance between the transmitter and the receiver.

3. Can radio waves be blocked by certain types of walls?

Yes, certain types of walls can block radio waves. For example, concrete and brick walls tend to be more effective at blocking radio waves than wood or drywall walls. This is because the density and thickness of the wall material can significantly affect how much radio waves can penetrate through.

4. What are some common uses of radio waves passing through walls?

Radio waves passing through walls are commonly used in wireless communication systems, such as Wi-Fi and cell phones. They are also used in radar systems for detecting objects and in medical equipment for imaging and treatment.

5. Are there any potential health concerns associated with radio waves passing through walls?

The low energy level and low frequency of radio waves make them generally safe for human exposure. However, prolonged and close-range exposure to high-powered radio waves can potentially cause harm, such as tissue damage and heating of body tissues. It is important to follow safety guidelines and regulations for the use of radio waves in various applications.

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