Photocopiers“Xerography was an invention we didn’t know we needed until, suddenly, we didn’t know how we lived without it.” Carlson biographer David Owen Chester Carlson Chester Carlson had a childhood nobody would want to copy. His father was perennially ill and poor. Mom, dad, and young Chester lived in a leaky hut in Mexico until … Continue reading "Photocopiers"
Nuclear Aircraft CarrierNuclear aircraft carriers are enormous ships capable of traveling the world indefinitely. Indeed, the ships feature relatively large flight-decks capable of launching and landing fixed-wing aircraft, typically fighters. At 1,123 ft. (342 m.) the USS Enterprise is an enormous ship. In contrast, only oil supertankers are larger. The Enterprise supported 4,600 service members. First launched … Continue reading "Nuclear Aircraft Carrier"
Communication Satellite“This satellite must be high enough to carry messages from both sides of the world, which is, of course, an essential requirement for peace…” President Kennedy, July 23, 1962 Communication satellites bring the world closer together, with instant communication. They are especially important for communication, beaming information from one central place to many more. For … Continue reading "Communication Satellite"
Offshore Oil DrillOffshore Drilling Units allow drilling for oil underwater. History Early patents describe over-water drilling wells that never worked. Thomas Rowland filed an 1869 patent for a “submarine drilling apparatus.” There are limited records showing submerged oil wells in 1891, in Grand Lake in Ohio. However, it wasn’t until 1894 that offshore exploration started in earnest. … Continue reading "Offshore Oil Drill"
Nuclear SubmarineNuclear submarines can stay underwater for an unlimited amount of time, or at least until the food runs out. Prior to nuclear subs, there were diesel-electric subs, that still exist today. However, these subs use diesel engines to recharge batteries. Therefore, diesel subs must surface to turn on the diesel engines and recharge their batteries, … Continue reading "Nuclear Submarine"
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"
Credit ReportingAccurate credit reporting vastly lowered the risk of lending and, with it, the cost of capital. Lewis Tappan Tappan was a strident Christian who did not believe in credit. His brother and he went bankrupt, twice. Tappan and brothers were busybodies, known to snoop and report on New York City gaming houses, brothels, and other … Continue reading "Credit Reporting"
LinuxLinux is a stable and secure operating system. The operating system is open-source and free. However, there are many companies that sell support for Linux, and maintenance is typically the source for most of the cost comes of maintaining an operating system. Background Limited to 16 concurrent users at his school’s computer, Linus wanted a … Continue reading "Linux"
DialysisDialysis machines do the work of kidneys, cleaning the blood of impurities. After two years of experimentation on terminal patients, 15 who died, Kolff successfully kept a woman suffering renal failure alive with his “artificial kidney” dialysis machine. After WWII he donated the machines to hospitals around the world then immigrated to the US in … Continue reading "Dialysis"
BraCommunist spitfire Ida Rosenthal came from a line of Jewish intellectuals in what was then Russia and is now Belarus. She returned from college an outspoken communist revolutionary and with a boyfriend, William. Threatened with jail, the army, or both they fled to the US in 1905 and married in 1906. Ida, who was 4′ … Continue reading "Bra"
Core MemoryCore memory enhanced the productivity of early computer operators. Not only does core memory store information but also does not need power to maintain memory. Wang & Woo created computer memory that would sit on tiny magnetic rings, strung together into cores. These were smaller than vacuum tubes and used less power. Furthermore, they did … Continue reading "Core Memory"
Wire RopeWire rope is far stronger than natural-fiber rope. German mining engineer Wilhelm Albert invented wire rope about 1834. Wire rope is sometimes called Albert rope after the inventor. Early on, they were used to hoist stuff to and from silver mines in the Hartz Mountain. The first rope was three wrought-iron cables twisted around one … Continue reading "Wire Rope"
ChemotherapyChemotherapy refers to a group of drugs that fight cancer. Surgery and radiation were the two common anti-cancer therapies before the discovery of effective chemotherapy. Immunotherapy was also studied but showed little promise. Background In the 1800s, scientists thought drugs might be able to fight cancer. However, none of them worked well. In the 1910s, … Continue reading "Chemotherapy"
Options & Futures“I’ll gladly pay you Tuesday for a hamburger today,” cartoon character Wimpy Wellington repeatedly offers. If he worked as an options trader he’d probably say “I’ll gladly pay you 1/10th the price of a hamburger today if I can buy a hamburger, sometime in the next year, at the price they are today.” You’d answer: … Continue reading "Options & Futures"
Hybrid CornGenetic modification by people have produced virtually all plants and animals in the western world. Broccoli, cauliflower, cabbage, kale, kohlrabi, and brussels sprouts are all derived from a wild mustard plant in Europe. None of these vegetables exist but-for early genetic engineering. Similarly, all dogs, cows, pigs, sheep, and chickens are modern man-made creations. Scientists … Continue reading "Hybrid Corn"