The body mass index (BMI) is calculated from weight and height measurements using the formula BMI = weight (in kg) divided by height (in m -2). The BMI was first introduced by Quetlet in order to eliminate the confounding effects of height on weight.
Share this item with your network: A smartphone is a cellular telephone with an integrated computer and other features not originally associated with telephones, such as an operating system, Web browsing and the ability to run software applications.
Evolution of mobile phones, to an early smartphone. A mobile phone is a portable telephone that can make and receive calls over a radio frequency link while the user is moving within a telephone service area. The radio frequency link establishes a connection to the switching systems of a mobile phone operator, which provides access to the public switched telephone network (PSTN).