gunpowder, guns, firearms

Gunpowder, 10th century – Outsourced killing to a machine |firearm – a portable gun, being a barreled weapon that launches…

hand tools

Engineering is about problem solving. Many of life’s little problems can be solved by an engineer with the right tools.…

Gyroscope – The device is a spinning wheel on an axle. The device, once spinning, tends to resist changes to…

The hand battery To do and notice Put your left hand on the aluminum plate and your right hand on…

Gumball machines History of gummbals – around 215 BC. the first vending machines were located in Egyptian temples and dispensed…

Great Wall of China – a series of fortifications made of stone, brick, tamped earth, wood, and other materials, generally…

“Green” means environmentally friendly and sustainable. Green chemistrycreates products and processes that are safer and cleaner — from the start.…

There are plenty of lists of Greatest… Here are some of the lists. There are many duplicates and items that…

Graphene’s discoverers were awarded the 2010 Nobel Prize in Physics for their find. And it’s no wonder; the material is…

Build your dream (video 1:15) – See How Engineers Can Make A World of Difference – The National Academy of…

Gravity (images) – Regardless of the mass of the object, a free falling object will accelerate towards the Earth at…

Green building As new building are constructed and old buildings are renovated, designs are including features and processes to “go…

Grader – a construction machine with a long blade used to create a flat surface during the grading process. Typical…

graphic computer system – Created by Doug Engelbart in the 1960s, controlled by a special keyboard and something called a…

Golf – precision club and ball sport in which competing players (or golfers) use many types of clubs to hit…