Visible light is a type of electromagnetic radiation, and ultraviolet and infrared rays are your friends?

Light is a type of electromagnetic wave.

You’ve probably heard of terms like ultraviolet rays, infrared rays, and gamma rays; these are all electromagnetic waves with different wavelengths.

While the properties of electromagnetic waves change depending on their wavelength, light is a specific type of electromagnetic wave with a wavelength ranging from approximately 380 nm to 780 nm, and is specifically referred to as “visible light.”

 

While the properties of electromagnetic waves vary depending on their wavelength, visible light (380 nm to 780 nm) is further divided into distinct categories based on wavelength.

Different wavelengths result in different colors, as shown below.
 

• 380–430 nm: Violet
• 430–460 nm: Blue
• 460–500 nm: Blue
• 500–570 nm: Green
• 570–590 nm: Yellow
• 590–610 nm: Orange
• 610–780 nm: Red

 

Generally, apples appear red, tangerines appear orange, and watermelons appear green.

Since these objects do not emit light on their own, the light that hits their surfaces and bounces back is what makes them appear in their respective colors.

Whether you’re outside or inside your home, apples appear red, which means the reflected light contains a high proportion of red wavelengths.

Similarly, oranges contain a high proportion of orange wavelengths, and watermelons contain a high proportion of green wavelengths.