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.
Ancient Wonder of the World: Egypt Approves Plan to Rebuild Pharos of Alexandria. The Pharos of Alexandria was one of the Seven Wonders of the Ancient World and the most famous lighthouse in antiquity.The incredible feat of ancient engineering stood at an impressive height of 130 meters (430ft) until it was destroyed by an earthquakes in the 14 th century AD.he great Pharos of Alexandria. As a saviour of Greeks, this watchman of Pharos, O Lord Proteus, was erected by Sostratus, son of Dexiphanes, from Cnidus. For in Egypt there are no lookout posts on a mountain, as in the islands, but low lies the breakwater where ships take harbor.