The ability of radiation to pass through glass depends on the type of radiation and the properties of the glass.
Visible light, which is a form of electromagnetic radiation, can generally pass through most types of glass with relative ease. Glass is transparent to visible light, allowing it to transmit through the material without significant absorption or scattering. That's why we can see through glass windows and lenses.
On the other hand, certain types of glass, such as leaded glass or special types of glass used in radiation shielding, are designed to block or attenuate specific forms of radiation, such as X-rays or gamma rays. These glasses contain additives like lead or other heavy elements that absorb and scatter the high-energy radiation, reducing its penetration.
It's important to note that while visible light can pass through glass, other forms of electromagnetic radiation, such as ultraviolet (UV) light or infrared (IR) radiation, may have different interactions with glass. Some types of glass can block or filter out certain wavelengths of UV or IR radiation to varying degrees. For instance, you may have noticed that some sunglasses or window films are designed to block UV rays.
In summary, the ability of radiation to pass through glass depends on factors like the type of radiation and the specific properties of the glass. While visible light can pass through most glass, other types of radiation may be blocked or attenuated by specially designed glasses or glass additives.