This history of the telephone chronicles the development of the electrical telephone, and... [1] The acoustic tin can telephone, or "lovers' phone", has been known for centuries. [1] It...
[4] 1877 - William Grylls Adams and Richard Evans Day observed the photovoltaic effect in solidified selenium, and published a paper on the selenium cell. 'The action of light on selenium...
efficiencies of up to 85% can be obtained. [6] Contents 1 History 2... Main article: Timeline of hydrogen technologies Sketch of Sir William Grove's 1839 fuel cell The first references to...
For a timeline of iPhone devices, see List of iPhone models.... 2007 The history of the iPhone by Apple Inc. spans from the... Genesis of the iPhone [edit] The idea of an Apple phone came...
The first phone went on sale for nearly $4,000 in 1983. Here's a brief history of the cell phone industry and how it has evolved over time.
For the films, see Cell Phone (film) and Handphone (film). Two decades of evolution of mobile phones, from a 1992 Motorola... of the population owns at least one. [10] Contents 1 History 2...
Andree_Nery / Getty Images Any device that directly converts the energy in light into electrical energy through the process of photovoltaics is a solar cell. The development of solar cell...
For the timeline of the smart phone, see Smartphone. This timeline of the telephone covers... in the history of the telephone. Charles Bourseul Johann Philipp Reis Elisha Gray Thomas Edison...
Operation The importance of the cellphone interconnection between mobile and public headquarters Communication between employers . The mobile telephony consists in the combination of a network betw...
Dive into the history of cell biology and explore key discoveries that have shaped our understanding of cells' structure and function.