aviation safety

Aviation safety – the theory, investigation, and categorization of flight failures, and the prevention of such failures through regulation, education, … More

backhoe

The name “backhoe” refers to the action of the shovel. A backhoe digs by drawing earth backwards, rather than lifting … More

axes and knives

The earliest tools were made of stone. Some predate early man as Neanderthal and other early ancestors used rocks and … More

aviation apps

Pilots go mobile Mobile apps for aviation – a great example of mobile technologies being used extensively and dramatically changing … More

automotive history

Early designers, builders and manufactures Most of the earliest automobiles were designed and built one at a time Packard Engines … More

automotive

Automotive Engineering The automobile, late 19th century – Transformed daily life, our culture, and our landscape Between 1920 and 1970, … More

auto manufacturing

If founder Elon Musk is right, Tesla Motors just might reinvent the American auto industry—with specialized robots building slick electric … More

atmospheric pressure

Pictured: taken by astronauts aboard the International Space Station (ISS) of the Earth’s atmosphere as seen from orbit. The Earth’s … More

audio

Music – an art form whose medium is sound and silence. Its common elements are pitch (which governs melody and … More

atomic clock

Atomic clocks are the most accurate time and frequency standards known, and are used as primary standards for international time … More

automated teller machine

Automated teller machine – a computerized telecommunications device that enables the clients of a financial institution to perform financial … More

assistive technologies

Adaptive technologies – technology used by individuals with disabilities to perform functions that might otherwise be difficult or impossible. Assistive … More