Why do people put speaker grill over their speakers???

[cbdb]

Or just Compare cloth by puting it over your ear.

 

[phivates]

Keep Adason's advice in mind.

 

[Galu]

buuuuuuut isn't all UV light filtered out by the windows in my house??

In brief, some types of UV light can pass through window glass.

Does Glass Block UV Light, or Can You Get a Sunburn?