Swiss physicist known for his pioneering work in the field of spectroscopy. Wavelengths of light and atomic distances (interatomic spaces) are generally measured in the unit Ångström, named after the esteemed scientist.
The first commercially available cell phone was Motorola's DynaTAC 8000X. It took 10 hours to charge the device which gave 30 minutes of talk time. The world's first call from a mobile phone was made using this device by Motorola's Martin Cooper, the father of the cell phone. [more...]