When were Stained Glass Windows introduced?

Historical documents and excavations have discovered that stained glass was around as far back as the 12th century. These are true stained glass windows which tell a pictorial story and are considered to be the invention of Western Europe. Religious writings dating as far back as 240 AD mention the existence of tinted glass in windows of the early Christian basilicas (churches). Stained glass windows...

March 31st, 2011 by admin 

When did Gold Mining Begin?

Although the time cannot be pinpointed exactly, it is widely believed that gold mining dates back about 5,000 years.The first gold was mined in Egypt, and wall paintings have been found which show gold mining in its various stages of production. Gold was extracted (panned) from river water; this was achieved by sifting out the lighter sands in the water to leave the heavier, gold particles behind....

March 31st, 2011 by admin 

When were the First Books made?

The First books were made about 4,000 years ago by the Egyptians, who used flattened layers of papyrus (a reed-like water plant) to make sheets. The ‘books’ they made were collections of rolled papyrus sheets- very different to a book of today. In the middle of the fifth century, parchment (sheep skin) replaced papyrus. Parchment sheets were placed on top of one another and bound down one...

March 31st, 2011 by admin 

When was the First Plastic made?

Plastics are made by a chemical process called polymerization. Even without today’s technology and up-to-date knowledge, chemists of the nineteenth century understood the making of plastic. The first plastic, vinyl chloride, was made in 1838. This was closely followed by styrene in 1839, acrylics in 1843 and polyester in 1847. But at the time, no-one realised the potential for their use. later...

March 31st, 2011 by admin 

Energy Resources

Energy is the force that helps man in performing various tasks. Energy is obtained from a number of resources. These resources are of two types : renewable and non renewable resources. RENEWABLE ENERGY RESOURCES The renewable resources are those which can never finish from the earth. The major renewable resources of energy are water, sunlight, wind, geothermal etc. Another feature of these energy resources...

March 29th, 2011 by admin 

Fire needs air

Air is needed to keep a fire burning. Air is a mixture of several gases. Oxygen in the air helps a fire burn. Through this experiment of a candle you can prove that fire needs air to keep burning. HOW TO DO IT ? Things you will need : 1. A candle  2. A plate  3. A glass jar  4. Water   Step 1 Place the candle in the centre of the plate. The candle should at least 5-6 inches tall. Step 2 Light...

March 27th, 2011 by admin 

The Months

Thirty days has September, April, June and November; February has twenty-eight alone, And the rest have thirty-one, Excepting leap-year, that’s the time, When February days are twenty-nine.
March 27th, 2011 by admin 

Largest Brick-Building in the world

Largest brick building in the world : Albi Cathedral, the Cathedral of Saint Cecilia, is the most important religious building in Albi, southern France. built in the 13th century in the heart of Cathar country, First built as a fortress begun in 1287 and under construction for 200 years, It  is the largest brick building in the world. Perched high on a hill above the River Tarn, it looks more like...

March 26th, 2011 by admin 

Largest Mud Building in the World

Largest mud building in the world: The Great Mosque of Djenné is the largest mud brick building in the world and is considered by many architects to be the greatest achievement of the Sudano-Sahelian architectural style, albeit with definite Islamic influences. The Great Mosque is located in the city of Djenné, Mali on the flood plain of the Bani River. The first mosque on the site was built in the...

March 26th, 2011 by admin 

Tallest Church in the World

Ulm Münster ( 161.5 m – 530 ft) : Ulm Minster, Germany is the tallest church in the world, located in the city of Ulm. It stands one of the most popular of the Germany tourist attractions. Thousands of tourists arrive each year to visit the Ulm Minster, Germany.Ulm Münster, is a Lutheran church. With its steeple being 161.53 meters high and having a total of 768 steps, it stands the tallest...

March 26th, 2011 by admin