Existence precedes essence Sartre claimed that a central proposition of Existentialism is that existence precedes essencewhich means that the most important consideration for individuals is that they are individuals—independently acting and responsible, conscious beings "existence" —rather than what labels, roles, stereotypes, definitions, or other preconceived categories the individuals fit "essence". The actual life of the individuals is what constitutes what could be called their "true essence" instead of there being an arbitrarily attributed essence others use to define them.
Hero of Alexandria Aeolipile This man could have started the Industrial Revolution in 50 AD with the invention of the Aeolipile, a form of steam or jet engine where jets of steam spin a ball. However, he failed to realize what the device could do, and thought of it as nothing but a toy.
Some have speculated that the abundance of slave labor negated any need for a labor-saving device, so no one applied his device in the manner of the Industrial Revolution.
Hero also wrote many works on subjects ranging from pneumatics to mathematics to physics. Wilbur and Orville Wright Wilber and Orville Wright Before Wilbur and Orville discovered what would later become the safest mode of transport, they were bicycle mechanics with a passion for kite-flying.
The crucial insights from both fields would later propel them to victory in the race to the sky.
Most prototypes of the time could not stay in the air long enough after taking off. The Wright brothers however understood that stability was crucial in overcoming this challenge.
After several experiments using kites and gliders, they created a pulley system that altered the shape of the wing in mid-flight, increasing and decreasing the speeds. The Wright brothers were also the first to look at propeller design and aerodynamics, profoundly changing the world.
Henry Ford Henry Ford Henry Ford realized that he would a more efficient way to mass produce cars in order to lower the price. He looked at other industries and found four principles that would further their goal: Ford put these principles into play gradually over five years, fine-tuning and testing as he went along.
Inthey came together in the first moving assembly line ever used for large-scale manufacturing.
Ford produced cars at a record-breaking rate forever changing the automobile industry. Thomas Edison Thomas Edison Edison is the most prolific inventor in history, holding a record 1, patents.
He developed the phonograph, incandescent light bulb, stock ticker, motion picture camera and projector, and hundreds more. He also created the first electrical plant and distribution infrastructure. Without these inventions, modern life is almost inconceivable. Leonardo da Vinci Leonardo da Vinci Perhaps the biggest visionary of all time, Leonardo foresaw everything from the helicopter to the tank to the submarine.
Modern engineers have proven that many of his designs, including bridges, hang-gliders, transmissions, parachutes, and more would have worked had they been built.
There have been few individuals in the history of engineering who have designed so many revolutionary devices that actually worked. For having this remarkable vision and intelligence, Leonardo qualifies as the most remarkable engineer of all time.
Books about these remarkable engineers.Existentialism (/ ˌ ɛ ɡ z ɪ ˈ s t ɛ n ʃ əl ɪ z əm /) is a tradition of philosophical inquiry associated mainly with certain 19th and 20th-century European philosophers who, despite profound doctrinal differences, shared the belief that philosophical thinking begins with the human subject—not merely the thinking subject, but the acting, feeling, living human individual.
DIY Nukeproofing: A New Dig at 'Datamining' 3AlarmLampScooter Hacker. Does the thought of nuclear war wiping out your data keep you up at night? Don't trust third party data centers? With the recent publication of PHYSICS IS there are now three Ask the Physicist books!
Click on the book images below for information on the content of the books and for information on ordering. Dear Twitpic Community - thank you for all the wonderful photos you have taken over the years.
We have now placed Twitpic in an archived state. Yo-yos can be traced back at least 2, years. It's a toy with true staying power, and it has lately gone high-tech -- ever heard of a yo-yo with a clutch?
Learn about yo-yo physics, yo-yo tricks, yo-yo history and some serious upgrades in yo-yo design. Sports, an international, peer-reviewed Open Access journal. The purpose of the present research was to study the effect of sex and performance on pacing in short (Run km, Bike km and Run km) and long distance (Run km, Bike km and Run km) in the Powerman World Championship ‘Powerman Zofingen’.