Magnetic rocks such as this one have been known to man for centuries. Early experiments found that when suspended on a string they would always point...磁石
Pisolitic iron ore, Berry, France; iridescent oxide of iron, Cornwall; stalactitic oxide of iron, Siegen, Germany; specular iron ore, Rio; magnetic...磁石
This photo taken on March 5, 2010 shows the pit at Citic Pacific Mining's Sino Iron magnetite iron ore project in the Pilbara region of Western...澳洲
Woodcut showing a Lodestone on board, floating in a bowl of water. It was possible to demonstrate in this way the fact that however placed it would...
This photo taken on March 5, 2010 shows Sino Iron worker Darrell Lim , in front of a massive dump truck at Citic Pacific Mining's Sino Iron magnetite...澳洲
By means of this loadstone, the island is made to rise and fall. From Gulliver's voyage to Laputa. From Gullivers Travels published c.1875磁石, 懸停
Copy made from tin, iron and stone. Lodestones are pieces of naturally magnetic iron oxide, which were believed to have healing properties. This was...
Two items used by the English physicist Michael Faraday . The lodestone belonged to J F Daniell, a contemporary of Faraday and first Professor of...
Artificial magnets', introduced in 1750, were known as such to distinguish them from the natural magnetite lodestones which had been in use for...
Terrella is a spherical lodestone made of magnetite, a magnetic mineral. The word 'terrella', meaning little Earth, was given to spherical lodestones...
Terrella, 1765. A terrella is a spherical lodestone made of magnetite, a magnetic mineral. The word 'terrella', meaning little Earth, was given to...
Diagram showing the behaviour of a magnetic needle and the difference between true and magnetic north; a cylindrical lodestone represents the field...
This photo taken on March 5, 2010 shows the pit at Citic Pacific Mining's Sino Iron magnetite iron ore project in the Pilbara region of Western...澳洲
This photo taken on March 5, 2010 shows Sino Iron mine manager Tim Ryan , surveying the world's largest trucks and shovels at Citic Pacific Mining's...
This photo taken on March 5, 2010 shows desalination plant construction manager Euan Glare , pointing over the site of what will be a 51gigalitre...澳洲
This photo taken on March 5, 2010 shows one of six ball mills, the most powerful of their size, being installed at Citic Pacific Mining's Sino Iron...
This photo taken on March 5, 2010 shows A 450 megawatt combined cycle gas-fired power station under construction at Citic Pacific Mining's Sino Iron...澳洲
This photo taken on March 5, 2010 shows A 450 megawatt combined cycle gas-fired power station under construction at Citic Pacific Mining's Sino Iron...
This photo taken on March 5, 2010 shows Sino Iron mine manager Tim Ryan , surveying a massive dump truck at Citic Pacific Mining's Sino Iron...
This photo taken on March 5, 2010 shows the world's largest dump trucks, shifting earth at Citic Pacific Mining's Sino Iron magnetite iron ore...
