The following result is obtained by our Internet Research Algorithm: LED stands for Light-Emitting Diode. LED light emits Electric and magnetic fields (EMFs) radiation which is not very harmful. Like other lights, light from LED bulbs and Tubelights are also kind of electromagnetic wave. The wavelength of the light will determine what kind of wave it is, and within the visible light spectrum it will also determine the colour of the light, Light with a wavelength of approximately 700nm will appear red, and light with a wavelength of approximately 400nm will appear blue or purple. LEDs only emit one colour of light not because they have coloured plastic over white light, but because they only emit light at a single wavelength. A typical light bulb with a whitish-yellow light happens when the light emits most colours of light but emits more light with a yellow wavelength than others.