Yogurt stands in for mayonnaise, and veggies such as celery, onions or bell peppers add a bit of crunch. One serving of egg salad made with two egg whites, 1/2 ounce of plain, fat-free yogurt and 1/4 stalk of celery has 60 calories, less than 1 gram of carbohydrates and 0.5 grams of fat.
The Amazing Inventions of Heron of Alexandria. Heron, also known as Heron of Alexandria, developed many machines and mechanical devices with practical uses, showing that it was possible to take theory and put it into practice. Some of his devices were: 1  A coin operated 'Holy Water Dispenser'. 2  A water organ. 3  The Aeolipile, a steam-powered device.
Along with the various other inventions Mesopotamia is well known for the unique and an important invention of the wheels. The wheels were invented by the Sumerians around 3500 BC.The wheel is a cylinder shaped object that rolls fairly easily. The first wheel was made from clay, rock and mud which slowly developed to the making of wheels by joining together of wooden planks. They connected it to vehicles called chariots.long with the various other inventions Mesopotamia is well known for the unique and an important invention of the wheels. The wheels were invented by the Sumerians around 3500 BC.