Web Results

Crystal radio

en.wikipedia.org/wiki/Crystal_radio

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

www.cnn.com/2014/02/24/world/oldest-earth-fragment/

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

giantcrystals.strahlen.org/america/naica.htm

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

www.crystalinks.com/mexicocrystals.html

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 ...

When were the first crystals discovered - Answers.com

www.answers.com/Q/When_were_the_first_crystals_discovered

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

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

www.cbc.ca/news/technology/zircon-crystal-is-oldest-piece-of-earth-ever-found-1.2550895

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 ...

History of Crystal Cave Pennsylvania in Kutztown, Pennsylvania

crystalcavepa.com/history.html

Crystal Cave in Kutztown, Pennsylvania dates back to its discovery in 1871 by ... including Crystal Cave, for $5000, and became Pennsylvania's first full time cave ... to study and report on the recently discovered cave in Richmond Township.

Early historical notes about crystals and crystallography

www.xtal.iqfr.csic.es/Cristalografia/parte_01_1-en.html

Probably the first historical references to the use of crystals come from the Ancient ... included in burials, as it was also found at a later period in Ancient Mexico.

World's largest crystal discovered in Mexican cave - Telegraph

www.telegraph.co.uk/news/newstopics/howaboutthat/3269047/Worlds-largest-crystal-discovered-in-Mexican-cave.html

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 ...

Pokémon Crystal Version - Bulbapedia, the community-driven ...

bulbapedia.bulbagarden.net/wiki/Pokémon_Crystal_Version

Pokémon Crystal Version (Japanese: ポケットモンスター クリスタルバージョン ... 3.3 Gameplay changes; 3.4 Storyline changes; 3.5 Pokémon not found in Crystal .... when the player encounters them in the wild, making Crystal the first game to ...

More Info

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

matm15.imascientist.org.uk

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

www.bibliotecapleyades.net

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 ...

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

www.sciencemag.org

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 ...