Ultraviolet radiation is a type of electromagnetic radiation emitted by the sun and can cause damage to our skin and eyes. Three types of UV rays are UVA, UVB and UVC.

The main difference between UVA and UVB is the wavelength of the radiation.  UVA has a longer wavelength than UVB, which means it can penetrate deeper into the skin. UVB, on the other hand, has a stronger wavelength and is responsible for most of the immediate effects of sun exposure, such as sunburn.

Some Other Differences Between UVA and UVB Rays

Time of the Day

UVA rays are present throughout the day, while UVB rays are strongest between 10 a.m. and 4 p.m.

Season 

UVA rays are present all year round, while UVB rays are more intense in summer. 

Penetration 

UVA rays can penetrate glass and clouds, while UVB rays are blocked by glass and clouds.

Effects on the Skin

UVA rays can cause long-term damage to the skin, such as premature ageing and wrinkles, while UVB rays are responsible for sunburn and can also contribute to skin ageing and skin cancer.

Remember to protect your skin from both UVA and UVB rays by wearing sunscreen with broad-spectrum protection, seeking shade during peak sun hours, and wearing protective clothing and hats.