concrete

Home » concrete

Roman science – What did ancient Romans invent?

By |2018-04-25T10:26:44+00:00September 4th, 2017|Romans, Science|

Roman mold-blown glass (100s AD) What we call Roman science is a mixture of two different things. The first is the discoveries and inventions made by scientists working in parts of West Asia and Africa that the Romans had conquered. In these places, scientists had already been working for a long time. They [...]

Trajan’s Markets – Roman architecture

By |2018-04-24T23:46:55+00:00August 31st, 2017|Architecture, Romans|

The view from Trajan's Markets After the Forum of Julius Caesar and the Forum of Augustus, later emperors also built more extensions on to the Roman Forum, to make more room for businesses. The emperor Trajan built a new forum about 100 AD. The front of Trajan's Markets, facing his forum and Trajan's Column In the forum, between [...]

The Pantheon – Roman Architecture – Ancient Rome

By |2018-01-01T11:27:59+00:00August 27th, 2017|Architecture, Romans|

Hadrian's Pantheon from the outside. Built in Rome, around 120 AD. Who built the Roman Pantheon? In the time of the Roman Emperor Augustus, about 10 BC, one of his generals, a man named Agrippa, built a temple in the middle of downtown Rome "to all the gods". A temple to all the gods is a Pantheon, which [...]

Basilica of Maxentius – Roman architecture

By |2018-04-24T23:28:35+00:00August 27th, 2017|Architecture, Romans|

Basilica of Maxentius and Constantine in the Roman Forum The Basilica of Maxentius was the last building the emperors built in the Roman Forum before the fall of Rome. The Emperor Maxentius started it in the early 300s AD. He wanted a big meeting-space where officials could hold court cases, or public meetings. Maxentius' architects were very up-to-date. They designed the building [...]

Calcium – Atoms and Chemistry

By |2018-04-16T14:37:53+00:00June 1st, 2017|Biology, Chemistry|

Chalk cliff (made of calcium) in Cottonwood Canyon, Pueblo, Colorado When a star is on the way to converting all of its carbon and oxygen atoms into iron, calcium is one kind of atom it makes along the way. One atom of calcium has 20 protons and 20 electrons (and 20 neutrons). Calcium is a [...]

What is limestone? History of Art

By |2018-04-15T11:31:53+00:00May 25th, 2017|Architecture, Art, Geology|

A block of limestone Starting with seashells Limestone is a kind of sedimentary stone that is very common all over the world. This kind of stone forms out of the shells of zillions of little tiny sea snails and creatures like that. These snails and stuff lived in the sea, billions of years ago. When [...]