Long Lasting Light BulbEdison’s bulb is well-known but what’s less understood is the enormous infrastructure required to power it. Edison created a power plant in New York City, power cables, transformers, power meters, insulators. When the lights finally came on, at the New York Times building, it represented the end of a herculean undertaking and the beginning of … Continue reading "Long Lasting Light Bulb"
Programmable Logic Controller (PLC)Programmable Logic Controller’s (PLC’s) are small single-purpose computers. They control machines and are common in cars. You probably own more PLC’s than any other type of computer. Today, a single-car has a myriad of PLC’s, usually networked together. PLC’s replace hard-coded wiring, automating tasks. PLC’s often read input from analog sensors. Responding to temperature, sensing … Continue reading "Programmable Logic Controller (PLC)"
TelevisionBefore Farnsworth, there were various types of mechanical TV that used spinning disks (Nipkow disks) and electrical transmitters, none of which ever gained traction. John Logie Baird invented the most widely known mechanical TV. Electrical Television Farnsworth had a small group of innovators, who invested $25,000. They eventually told him to give up so he … Continue reading "Television"
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"
InternetNikola Tesla and J.C.R. Licklider both talked about a worldwide network of computers. Licklider referred to it as an “Intergalactic Network.” Background The internet evolved slowly over time. At first, it wasn’t much more than a series of specifications, ideas about how computers might talk to one another. Eventually, towards the late 1960s, these turned … Continue reading "Internet"
LithographyLithography allows highly detailed drawings to be inexpensively reproduced at high volumes. Before lithography, printing remained similar from Gutenberg until Senefelder’s lithographic process. Senefelder worked as an actor and playwright. Unable to earn a living, he turned to printing as a trade but could not afford the typographic fonts and materials. Frustrated, he started experimenting … Continue reading "Lithography"
Stock Ticker / Ticker TapeBoth the ticker and ticker tape lowered the cost of transmitting stock prices by eliminating the need for a person to translate them to and from Morse Code. Subsequently, this innovation served as a bridge from specialists required to send and receive telegraph messages to plain-text transmissions. Edward Calahan saw people rushing from the floor … Continue reading "Stock Ticker / Ticker Tape"
Cotton GinWhitney’s innovation vastly lowered the price of cotton. Before Whitney’s cotton gin, producing cotton was economically inefficient because of the enormous cost to separate cotton from seeds. After the innovation, cotton became a profitable crop. Background Coming of age during the Revolutionary War, Whitney made a nail company, at the age of 15. Later, he … Continue reading "Cotton Gin"
Niche MarketingWalker, daughter of freed slaves, is the first self-made millionaire woman and the first self-made millionaire African American (maybe – tax returns suggest it was $600K but she did very well for herself). She invented beauty products for Black people. Walker was born in a sharecropper’s cabin. She is orphaned at seven. A freelance launderer, … Continue reading "Niche Marketing"
Why not Wikipedia? Deletionists.There is a major problem with Wikipedia, deletionists. Deletionists, as the name suggests, get off on deleting things. They tear down rather than build up. Why would they want to do this? There are two primary reasons. First, it is an easy way to increase the number of Wikipedia edits which increases the visibility and … Continue reading "Why not Wikipedia? Deletionists."
Automobile Assembly LineAssembly lines leverage standardized parts to break auto assembly into discrete components, each that can be done by a small number of people (often just one). Standardized parts evolved into standardized jobs. Ransom Olds, inspired by a musket factory that used standardized parts with workers each focused on one part, created the first auto assembly … Continue reading "Automobile Assembly Line"
Clusters of Regularly Interspaced Short Palindromic Repeats (CRISPR)CRISPR is like a word processor for DNA. It allows easy and inexpensive gene editing. Edited genes are passed to future generations, making mutations permanent. Doudna and Charpentier Doudna and Charpentier worked on and invented the technology as a team. First, they worked on plants and, later, on animals. History becomes murkier with the involvement … Continue reading "Clusters of Regularly Interspaced Short Palindromic Repeats (CRISPR)"
SonographySonography is the process of using sound waves as an imaging device, typically for medical purposes. Background Indeed, the principles of sonography come from the natural world. For example, bats and whales are mammals that use sound waves for navigation. In 1794, after performing medical studies on bats, Lazzaro Spallanzani gained a basic understanding of … Continue reading "Sonography"
LASERLASER’s allow light to be intensely focused. There are many uses, from reading digital media at low power to cutting at higher powers. Countless applications rely on LASER technology. In 1957, Arthur Schawlow and Charles Townes, of Bell Labs, worked on an infrared LASER, called an “optical MASER.” They patented the invention in 1958. In … Continue reading "LASER"
Jet EngineAn RAF pilot he thought up the jet engine and tried convincing the English military to fund development. When they refused, he created a private company to develop his jet engine, Power Jets Ltd. Undercapitalized, development of the new engine plodding along slowly. During WWII, the Allied forces realized the military potential of the jet … Continue reading "Jet Engine"
