FM RadioHistory In 1906, Lee de Forest invented the “three-electrode Audion” cathode ray tube. However, by his own admission, saw no use for it in radio. During his time at Columbia, Armstrong worked with Audion tubes and realized they could recycle a radio signal, amplifying it by sending it repeatedly through the tube. Further, by reversing … Continue reading "FM Radio"
Graphic User InterfaceComputers “must be learnable in private… Kindness should be an integral part.” Alan Kay The Graphic User Interface (GUI) consists of windows, folders, icons, mice, etc… It enables ordinary people to use computers. Xerox PARC’s GUI vastly simplified computer use and increased productivity by making computers easy and fun to use. Like the internet itself, … Continue reading "Graphic User Interface"
Web Search EngineNoteworthy early search engines include Archie, from 1990, that searched filenames, and Gopher, from 1991, that organized files. Early Search Engines In March 1994, Stanford students David Filo and Jerry Yang created “Jerry and David’s Guide to the World Wide Web.” Their website contained lists arranged by category of the burgeoning World Wide Web. Sites … Continue reading "Web Search Engine"
High Fidelity Sound Recording & PlaybackBackground German engineer Eduard Schüller created and patented the Magnetophon, a high-fidelity audio recording and playback machine. Working for German company AEG, he patented the invention in December 1933. AEG was a leading electrical company that had evolved from the Deutsche Edison Gesellschaft, the German Edison Company. Schüller perfected an earlier tape-recording device invented by … Continue reading "High Fidelity Sound Recording & Playback"
Diesel EnginesUses engines use compression to increase engine power. That increases engine power and reduces fuel costs. Diesel is French though studied engineering in Germany. After graduating he returned to Paris and opened an early modern refrigeration factory, patenting several innovations. He eventually left and, barred from the industry, turned his attention to engines. In 1893, … Continue reading "Diesel Engines"
Public-Key Cryptography (Public key encryption)Public Key Cryptography (PKC) dramatically lowers the risk of information intercept and also lowers the risk of impersonation. PKC vastly increases security. For example, Google allows people to send queries to them encrypted. But they cannot decrypt the queries sent by others with what they give you, only Google can. Besides encrypting and decrypting, public … Continue reading "Public-Key Cryptography (Public key encryption)"
Index Investment Funds“Don’t look for the needle in the haystack. Just buy the haystack!” Index investment funds are simpler and vastly less expensive than individual stock picking. Firms mimic index funds which, themselves, are created to mimic market strength. Not only do 85 percent of hedge fund managers trail returns in the S&P 500 but also they … Continue reading "Index Investment Funds"
Electronic Cipher (Enigma)Enigma is a cipher, a machine that implements an algorithm to encrypt and decrypt messages. On Feb. 23, 1918, Scherbius applied for his first patent for what would become the most well-known cipher machine in history, the Enigma. Initially marketed for commercial purposes the German army modified a version for military encryption in 1926. Nazis … Continue reading "Electronic Cipher (Enigma)"
Micro-Electro-Mechanical Systems (MEMS)MEMS are literally microscopic-machines. The best-known MEMS are the accelerometers that have become ubiquitous in smartphones, allowing precise tracking of movement on the X, Y, and Z-axis. Significantly, MEMS are the reason your phone can sense movement. Additionally, other MEMS devices include miniature microphones, projectors, cameras, and countless others. MEMS were first proposed in 1959 … Continue reading "Micro-Electro-Mechanical Systems (MEMS)"
Open Source SoftwareOpen-source software allows anybody interested to see and contribute to the creation of software, including the ability to spot bugs or security flaws. Dashiki wearing wild-eyed (and hair) Richard Stallman is the father of open-source. Richard Stallman Stallman’s theory is more eyes reduce the risk of quality problems. Consequently, people vote or reject changes to … Continue reading "Open Source Software"
SupertankersSupertanker ships transport enormous amounts of oil. They were invented by Ludvig and Robert Nobel, brothers of Alfred Nobel, the inventor of dynamite who founded and funded the Nobel Prize. “Dy-na-mite!” said Ludvig and Robert Nobel’s brother, Alfred, when they shared their invention, an enormous ship to move oil. OK, we’re 99.99% sure that didn’t … Continue reading "Supertankers"
Electric MotorMore inspirational to future innovators than practical, the Faraday motor shows that electricity can do the same function as a steam engine, but without the smoke. Faraday’s DC motors, like modern DC motors, had limited functionality. But his innovation served as the first step towards electrification. Faraday has three major innovations, the electrical motor, generator … Continue reading "Electric Motor"
Mini Steel Mill (mini-mill)1969 Ken Iverson “Integrated” steel mills create steel from raw materials. They use the Bessemer process to transform raw materials into enormous amounts of steel. The plants are giant, inflexible, dirty, and expensive to erect and run. Ken Iverson worked at the Nuclear Corporation of America (eventually, Nucor), a conglomerate of assorted businesses pulled together … Continue reading "Mini Steel Mill (mini-mill)"
Inexpensive Postage & StampPenny postage refers to low-cost prepaid postage. Background By the early 1800s, postage was centuries old. But many postal carriers were essentially government couriers. They were extremely expensive. However, recipients could reject mail by refusing to pay. This made the entire system unpredictable and unstable. Furthermore, postal employees sometimes opened and read mail. Government censors … Continue reading "Inexpensive Postage & Stamp"
PlasticAs described in the post about rubber, Charles Goodyear created the vulcanization plastic making mass-market rubber possible. Goodyear’s durable rubber enabled an entire field of new products from tires to raincoats. However, rubber is both thick and spongy, giving it limited utility. Nobody is going to create a rubber telephone and a rubber water bottle … Continue reading "Plastic"