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NASA has launched all of its space shuttle missions using hydrogen as fuel. To mark the International Year of the Periodic Table of Chemical Elements we’re taking a look at elements and how they’re used in research and the real world. Hydrogen is the first element on the periodic table. In its pure form hydrogen is a light, colourless gas, but forms a liquid at very low temperatures. Have you ever watched a space shuttle launch? The fuel used to thrust these enormous structures away from Earth’s gravitational pull is hydrogen. Hydrogen also holds potential as a source…
8 days ago · From The_Conversation_Australia
The only material we use more than concrete is water. Construction is one of the largest industries in the world economy – worth A$10 trillion globally (equivalent to 13% of GDP). But construction has suffered for decades from remarkably poor productivity compared to other sectors. While agriculture and manufacturing have increased productivity 10-15 times since the 1950s, construction remains stuck at the same level as 80 years ago. That’s because construction remains largely manual, while manufacturing and other industries have made ...
14.11.2018 · From The_Conversation_Australia
It’s highly likely that you recognise the building in the picture at the top of this page. The Sydney Opera House is, after all, one of the most famous structures in the world. Designed by Danish architect Jørn Utzon, it attracts over 8m visitors a year and provides a massive boost to the Australian economy. Opened 45 years ago in October 1973 by Queen Elizabeth II, its iconic design of enormous precast concrete shells has won numerous prizes…
17.10.2018 · From The_Conversation_UK