Can Light Erode Matter? Understanding the Impact of Photons on Diamonds

In summary, the conversation discusses the concept of light slowing down in a medium and its effects on the medium, particularly a diamond. It is clarified that light does not actually slow down, but the photons are absorbed by the electrons in the medium and re-emitted, giving the appearance of slowing down. The question of whether this process causes the diamond to lose mass is also raised, but it is concluded that this is not the case. However, it is noted that radiation can have various effects on materials, such as fading or deterioration.
  • #1
Theheretic
31
0
Hello all.

My understanding of why light will "slow down" when going through a medium such as let's say a diamond is because it only appears to slow down. In reality the photons are absorbed by the electrons in the medium (let's say diamond) and then those electrons of the diamond re-emit new photons of light. So in reality the original beam of light is not slowed down but gradually absorbed and the new beam that comes out the other side of the diamond is comprised of new photons emitted from the electrons of the diamond particles.
But the question is, if the photons that enter the diamond are absorbed and cause the diamond to give off new photons, does the diamond lose any sort of mass (as infinitesimal as I realize it would be). So is it conceivable that a light shone on a diamond for billions or trillions or quadrillions of years will eventually "erode" that diamond in the same way that water erodes rocks by causing the diamond to lose electrons a little at a time?
 
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  • #2
The premise is incorrect:
https://www.physicsforums.com/showpost.php?p=899393&postcount=4

and so is the supposed loss of mass...

On the other hand radiation does affect materials...sunlight (radiation) fades curtains, nuclear fission radiation deterioritates container metals, ionizing radiation can damage electronic circuits due to current spikes, and so forth.
 
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1. Can light erode matter?

Yes, light can erode matter, but the extent to which this occurs depends on the type of matter and the properties of the light. In the case of diamonds, the erosion is caused by high-energy photons colliding with the atoms in the diamond and breaking their bonds.

2. How does light erode diamonds?

Light can erode diamonds through a process known as photodegradation. This occurs when high-energy photons, such as ultraviolet light, collide with the atoms in the diamond and cause them to break apart. Over time, this can lead to the degradation of the diamond's structure and appearance.

3. Can all types of light erode diamonds?

No, not all types of light can erode diamonds. The type of light that can cause erosion in diamonds is typically high-energy light, such as ultraviolet light, X-rays, and gamma rays. These types of light have enough energy to break the bonds between atoms in the diamond, leading to erosion.

4. How long does it take for light to erode diamonds?

The amount of time it takes for light to erode diamonds can vary depending on the intensity and type of light, as well as the quality and composition of the diamond. In some cases, it may take years or even decades for noticeable erosion to occur. However, in lab settings with high-intensity light, erosion can occur much more quickly.

5. Can light erode diamonds in everyday settings?

In most cases, light does not have enough energy to significantly erode diamonds in everyday settings. However, prolonged exposure to sunlight and other high-energy light sources can lead to some erosion over time. Diamonds are also protected by their setting and cut, which can help to prevent erosion from occurring.

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