Miscellaneous Technology

October 30, 1938

Orson Welles broadcasts his radio adaptation of The War of the Worlds, which reportedly caused panic among listeners who believed the theatrical presentation was a real news broadcast. Regardless of the actual levels of panic caused, The War of the Worlds is one of the most famous radio broadcasts in history.

October 28, 1998

US President Bill Clinton signs into law the Digital Millennium Copyright Act (DMCA). The law is intended to criminalize production and dissemination of technology designed to circumvent digital copyright protection (known as Digital Rights Management or DRM). However, the law has been very controversial, with accusations of abuse of the law to stifle innovation and competition.

October 22, 1938

In a makeshift lab on the second floor of a rental house, Chester Carlson and his assistant Otto Kornei successfully invent the process that would lead to the photocopier. Carlson had written “10.-22.-38 ASTORIA” on a piece of paper and these became the historic words that were the first photocopied. Ironically, Kornei had so little faith in the invention that within a year he quit working for Carlson and willingly gave up any claims he had on the process. However, Carlson would later gift Kornei 100 shares of the Xerox corporation that would eventually be worth $1 million.

October 21, 1879

Thomas Edison perfects the first commercially practical incandescent light bulb. Using a filament of carbonized cotton thread, his first attempt at this design results in a bulb that lasts about 13.5 hours before burning out. He later extends the life of the bulb to 40 hours. Edison’s successful design came only after he had tested over 6,000 different vegetable fibers during a span of over 18 months running 1,200 experiments and spending $40,000.

October 20, 1906

Dr. Lee DeForest announces his three-element electrical vacuum tube, later known as a triode. The triode was able to produce a large voltage-amplifying effect, which when used to amplify weak signals, will make long-distance communication possible for the first time.

October 15, 1878

Thomas Edison and a group of investors form the Edison Electric Light Company. The goal of the company was to provide financial support for Edison’s electric light experiments and work on developing an electrical lighting system for an entire city. The long-lasting carbonized filament light bulb was developed by Edison while working for this company. Eventually this and several other Edison companies were merged to form General Electric.

February 29, 2012

Construction of the Tokyo Skytree broadcast tower, delayed two months due to the 2011 Japan earthquake and tsunami, is completed on leap day – February 29th, 2012. The Tokyo Skytree is the tallest structure in Japan and the world’s tallest tower.