Hard Disk DriveDisk drives quickly store and retrieve information for computers. The primary inventor is Reynold “Rey” Johnson. Previously, he invented and sold the technology that reads pencil dots, usually for taking tests, to IBM. Subsequently, he then joined them as a staff engineer. While at IBM he developed the hard disk drive. The first hard drive, … Continue reading "Hard Disk Drive"
Spread Spectrum Frequency Hopping1941 Hedwig Eva Maria Kiesler (Hedy Lamarr)George Antheil Spread spectrum frequency hopping synchronizes devices to speak over changing frequencies. The technology jumps from one frequency to another in a predetermined but predictable manner so that the sender and recipient can change simultaneously. Lamarr and Antheil created the technology to contribute to the WWII effort, though … Continue reading "Spread Spectrum Frequency Hopping"
Commercial Business Computer (EDVAC/UNIVAC)Mauchly and Eckert, inventors of the ENIAC, set out to create a commercial computer. They worked with government officials who needed fast computing, including military and census officials. Eventually, their employer, the University of Pennsylvania’s Moore School of Engineering announced an intent to keep all patents produced by faculty. Henceforth, the two promptly resigned and … Continue reading "Commercial Business Computer (EDVAC/UNIVAC)"
King Camp Gillette’s Razor Blade Business ModelGillette’s Razor Blade business model reinforces the blue ocean strategy concept of buyer utility. Specifically, when analyzed on the blue ocean strategy buyer utility map, Gillette’s disposable blades were convenient to purchase, use, and dispose of. Like many blue ocean offerings, disposable blades also broke the cost/value trade-off, offering higher value at lower cost than … Continue reading "King Camp Gillette’s Razor Blade Business Model"
Polyethylene PlasticPolythene (PE) is the world’s most common plastic. Plastic bags, packaging cups, plates are all made from polyethylene plastic. Only carbonated beverage bottles use a different type of plastic because PE does not expand well. Despite its ubiquity today, PE has an odd history. It was an accidental discovery by Reginald Gibson and Eric Fawcett … Continue reading "Polyethylene Plastic"
Health InsuranceBackground Germany has the oldest health insurance system, the Sickness Insurance Law of 1883. Employers paid one-third and employees two-thirds. The insurance covered both medical treatment and sick leave. In 1911, the UK created basic health insurance. Russia followed in 1912, nationalizing all healthcare after the Russian Revolution of 1917. Most countries rolled out some … Continue reading "Health Insurance"
Transcontinental RailroadBackground After much debate in Washington, DC, and with the civil war brewing, Judah presented a transcontinental railroad a “Think Big” project. Asa Whitney had lobbied for a western railroad starting in 1847 but got nowhere. Somehow, Judah cut through the other issues (especially slavery) to get attention and became a central plank of the … Continue reading "Transcontinental Railroad"
Vacuum CleanerVacuum cleaners lower the cost of cleaning and enables better hygiene. Booth saw demonstrations of machines that blew air to scatter dust. Reversing the airstream would allow air to be sucked through a filter. Collecting the dirt into a bag reduced the time needed for cleaning while increasing quality. Booth’s machines were full-sized trucks. Long … Continue reading "Vacuum Cleaner"
TelephoneThe telephone vastly lowered the cost of communication by eliminating the need for Morse Code and enabling real-time voice conversations. Bell was a Scottish immigrant, a teacher for deaf children. The inventor of the telephone would go on to marry one of his students, a then 15-year-old deaf young woman. Due to his work with … Continue reading "Telephone"
Surgical DisinfectantSurgical disinfectant vastly reduces the risk of infection and subsequent disease and death. Lister, building on the work of Pasteur and Semmelweis, insisted that surgery and surgical equipment be cleaned with carbolic acid, an early attempt at sterilization. Before Lister, surgeons would not change their clothes: more blood showed more experience. Semmelweis advanced similar ideas, … Continue reading "Surgical Disinfectant"
Electric Arc FurnaceElectric arc furnaces are giant pots that melt steel. They enable the recycling of scrap steel. Recycled steel both costs far less than creating steel from raw materials and has a lower environmental impact. The process involves three-phase electrodes which create an arc that reaches about 3000°C (5400°F). Frenchman Paul Héroult (co-inventor of aluminum smelting) … Continue reading "Electric Arc Furnace"
Random Access MemoryRandom Access Memory (RAM) is a type of fast memory. The Central Processing Unit (CPU), the brain of a computer, relies on RAM. RAM exists to this day. Every computer, including smartphones, contains RAM. The “random” in RAM refers to its ability to access memory anywhere, instantly, unlike a disk drive that must search for … Continue reading "Random Access Memory"
Instant PhotographsLong before the digital camera Polaroid’s delivered instant photographic gratification, albeit it at a steep price. Like countless tech inventors after him, Land dropped out of Harvard. He sneaked into the labs at Columbia while developing early Polaroid light filter technology. Land’s Polaroid created polarizing light filters, especially useful as sunglasses during WWII. Eventually, he … Continue reading "Instant Photographs"
MinicomputerComputers were big. They were enormously expensive and physically giant machines. IBM’s nickname from this time was Big Blue on account of the size of the company and their computers. History Olsen developed, by current standards, small transistor-based computers at MIT. He left in ’57 to form a company, the Digital Computer Corporation. It was … Continue reading "Minicomputer"
Sit-Flat Paper BagsSure, sit-flat paper bags are not the condensing steam engine, the telegraph, pneumatic tools, or the dynamo generator but they represent something new: a woman entrepreneur. After realizing the hassle of bags that would not stand Margaret Knight set out to create a machine for a bag with a flat bottom. She worked with three … Continue reading "Sit-Flat Paper Bags"
