The Rawbare Journal
How Much UV Reflects Off Sand, Water and Concrete? Why...
UV does not only come from the sky. Snow, sand, water and pale concrete reflect part of it back up toward your eyes. How much each surface reflects, why it matters at beaches and in cities, and what kind of sunglasses help.
Polarized vs Non-Polarized Sunglasses: Which One Do You Actually Need?
Polarized lenses cut glare. Non-polarized lenses reduce brightness. Both block UV if UV400 rated. Learn how polarization works, when each lens type performs best, and which suits Indian conditions.
