WebMD Symptom Checker helps you find the most common medical conditions indicated by the symptoms numbness or tingling (scalp), numbness or tingling (jaw) and restless (tossing and turning) sleep including Peripheral neuropathy, Vitamin B12 deficiency, and Multiple sclerosis.
Light is one type of radiant energy. Sunshine is radiant energy, which provides the fuel and warmth that make life on Earth possible. Heat travels from the sun by a process called radiation. Radiation is the transfer of heat by electromagnetic waves.
Visible light energy is just one form of light energy. There are invisible forms of light energy, or light energy we cannot see, such as infrared, ultraviolet, radio and x-ray light energy. All light energy is generated by light waves.