A crystal radio receiver, also called a crystal set or cat's whisker receiver, is a very
simple radio ... The first crystal sets received wireless telegraphy signals
broadcast by spark-gap trans...
Feb 25, 2014 ... Scientists say they have dated an ancient crystal called a zircon to ... The first
rocks that have been found deposited by water are about 3.8 ...
Continous mining goes on since more than a century and in 1910 the first of
several crystal caves was discovered in a depth of 120 m underground. This so ...
The chamber holding these crystals is known as the Crystal Cave of Giants, and
is ... The Naica mine was first discovered by early prospectors in 1794 south of ...
Oct 19, 2015 ... These crystals provide a rare glimpse into the first chapter of Earth's history,
known as the Hadean eon. “They are pretty much our only physical ...
Feb 25, 2014 ... A tiny zircon crystal found on a sheep ranch in western Australia is the ... To
determine the age of the zircon fragment, the scientists first used a ...
Mar 6, 2013 ... Researchers say this crystal found at the Alderney shipwreck near the Channel
Islands could prove fabled Viking sunstones really did exist.
Oct 27, 2008 ... Hidden deep beneath the surface of the Earth is one of the greatest natural
marvels on the planet: a giant crystal cave packed with crystals up ...
Oct 4, 2016 ... Now researchers have created time crystals for the first time and say they ... But
when Monroe and co measured this, they found another effect.
The History of Crystal Methamphetamine - Drug-Free World. ... Amphetamine
was first made in 1887 in Germany and methamphetamine, more potent and
easy to make, was developed in Japan in 1919. The crystalline .... Where is It