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Joseph Bell Alexander – Complete Biography, History, and Inventions
While many of the greatest inventors of the 19th century are known only for what’s on their patent, the truth is that they had...
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How Much Does the Earth Cost?
Have you ever wondered how much would it cost to buy the world? As humans, we often take Earth’s resources for granted, but astrophysicists...
Milton Jeffers – Complete Biography, History, and Inventions
While the 20th century saw inventors and mathematicians get closer and closer to the modern calculators and computers we know and use today, the...
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Palm Pilot: Everything You Need to Know
The Palm Pilot was created by Jeff Dawkins, Donna Dubinsky, and Ed Colligan and was initially released in March 1996. The Palm Pilot was...
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Vannevar Bush – Complete Biography, History, and Inventions
Who Was Vannevar Bush? Vannevar Bush was an American inventor, electrical engineer, and science administrator. He was the leader of the Office of Scientific Research...
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Add-A-Mite Explained – Everything You Need To Know
Key Points About Add-A-Mite The design of Add-A-Mite is very similar to Webb Adder. This calculator is made from aluminum, iron, and brass. This pocket calculator was...
The Tiniest Guns Used for Self-Defense
When it comes to self-defense, you can never be too careful. While the idea of carrying around a weapon like a gun remains controversial,...
These Countries Used the Guillotine Most Recently
For most people, their only knowledge of the guillotine extends to textbooks or movies that portray the late 1700s. This traditional French execution tool...
Compact Disc Explained – Everything You Need To Know
Compact Disc History The first workable digital compact disc device, the precursor on now-ubiquitous CD/DVDs, was invented in the late 1960s by the American physicist...
Friedrich Arzberger — Complete Biography, History, and Inventions
While Friedrich Arzberger worked in mining and as a professor, he has a footnote in history for having created one of the first adding...
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Difference Engine A numerical table is a tool designed to save the time and labor of those engaged in computing work. The oldest tables which...