What is SAR? Specific Absorption Rate(SAR) is a measure of the rate at which energy is absorbed per unit mass by a human body when exposed to a radio frequency electromagnetic field. It can also refer to absorption of other forms of energy by tissue, including ultrasound. Facebook page: https://www.facebook.com/engineervineet/?modal=admin_todo_tour Instagram: https://www.instagram.com/engineervineetjajodia/