In particular, the photon model accounted for the frequency dependence of light's energy, and explained the ability of matter and radiation to be in thermal equilibrium.he energy of a system that emits a photon is decreased by the energy of the photon as measured in the rest frame of the emitting system, which may result in a reduction in mass in the amount. Similarly, the mass of a system that absorbs a photon is increased by a corresponding amount.
Responding to the changes, the Finnish company started churning out both sophisticated multimedia handsets as well as low-end devices. The year 2001 saw the company launching the Nokia 7650, its first phone to feature a built-in camera. It was also the first to sport a full color display.
In 2014, Nokiaâs Devices and Services division was sold to Microsoft. In 2016, Finnish company HMD Global bought a part of Microsoftâs feature phone business and has a licensing agreement that allows it to make smartphones under the Nokia brand. Nokia's latest mobile launch is the 3310 (2017). The mobile was launched in February 2017. The phone comes with a 2.40-inch display with a resolution of 240 pixels by 320 pixels. The phone packs 16MB of internal storage that can be expanded up to 32GB via a microSD card.