As technology advances, photonic systems are gaining ground over traditional electronics, using light to transmit and process information more efficiently. One such optical system is laser beam ...

Blue Light Therapy & Green Light Therapy for the Skin: How Does It Work? According to Dr. Hartman light therapy, "works by delivering wavelengths of light to the skin, either from an at-home device or ...

Women's Health may earn commission from the links on this page, but we only feature products we believe in. Why Trust Us? At the simplest level, different colors of light have different wavelengths.