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Crystal radio - Wikipedia


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...

4.4 billion-year-old crystal is oldest piece of Earth - CNN.com


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 ...

The Giant Crystal Project : Gypsum Crystals of the Naica Mine, Mexico


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 ...

Cave of the Giant Crystals, Mexico - Crystalinks


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 ...

Scientists may have found the earliest evidence of life on Earth ...


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 ...

Zircon crystal is oldest piece of Earth ever found - Technology ... - CBC


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 ...

First Evidence of a Viking-Like 'Sunstone' Found - Live Science


Mar 6, 2013 ... Researchers say this crystal found at the Alderney shipwreck near the Channel Islands could prove fabled Viking sunstones really did exist.

World's largest crystal discovered in Mexican cave - Telegraph


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 ...

Physicists Create World's First Time Crystal - MIT Technology Review


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


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 Found?

More Info

When was the first crystal discovered and what crystal was it ...


Mar 17, 2015 ... Hmm, this is a good question and a tricky one to answer, but I will give it a go! So the first crystal (made by humans) would have probably been ...

The Crystal Cave


The Cave of Swords is another chamber in the Naica Mine, containing similar large crystals. The Naica mine was first discovered by early prospectors in 1794 ...

When were the first crystals discovered - Answers.com


the first crystals were discovered in 1816, when some gold miners came across a cave of giant crystals.