many of the major electronic inventions of the modern age were developed at Bell Labs, including the transistor, the laser, solar cell, wavelength optical multiplexing (see DWDM), the Unix ...

The first cell phone ... Before cell phones, there were car phones. In fact, the original car phone weighed about 80 pounds. In 1947, an engineer at Bell Labs envisioned a futuristic phone network ...

The First Solar Cell Is Developed In 1767 Solar energy ... Early in the decade, Bell Laboratories developed the silicon solar cell, bringing energy-producing efficiency up to 6%.

There are three types of solar energy technology widely available today. Photovoltaic cells, first developed at Bell Labs in 1954, contain semiconducting materials that absorb light energy from ...

1941: Bell Laboratories engineer Russell Ohl files a patent for the first monocrystalline silicon solar cell. 1947: Passive solar houses become popular due to post-war energy scarcity. 1951 ...