| Authors present new first records from all over the world. Everybody is invited to share information. ... moreAuthors present new first records from all over the world. Everybody is invited to share information. |
| Beim Antilope Canyon handelt es sich um eine in Jahrtausenden aus Navajo Sandstein heraus gespülte Schlucht, die durch ihre geschwungen Formen und Lichtspiele einen besonderen Reiz auf den Betrachter ausübt. Beste Zeit für einen Besuch ist Mittag bis Nachmittag, da dann das Beste Farbspiel zu beobac ... moreBeim Antilope Canyon handelt es sich um eine in Jahrtausenden aus Navajo Sandstein heraus gespülte Schlucht, die durch ihre geschwungen Formen und Lichtspiele einen besonderen Reiz auf den Betrachter ausübt. Beste Zeit für einen Besuch ist Mittag bis Nachmittag, da dann das Beste Farbspiel zu beobachten ist. Ein Besuch sollte nur bei strahlendem Sonnenschein vorgenommen werden, da nur dann die farblichen Differenzen von violett bis leuchtendem Orange richtig zur Geltung kommen. Die unterschiedliche Lichtintensität im Canyon vermittelt den Eindruck von verschiedenfarbigem Sandstein... |
| In the last 10 years, in addition to further development, the focus has been on cooperation and securing the future. In the year 20 after foundation, we have now taken an overdue and large step in this direction... ... moreIn the last 10 years, in addition to further development, the focus has been on cooperation and securing the future. In the year 20 after foundation, we have now taken an overdue and large step in this direction... |
| Iin 1546 Georgius Agricola reported about a white metal which is fused to the Rammelsberg lead and silver melter and that you could scrape off. He called this metal "contrefey", because it could imitate gold. Agricola did not recognize that this metal was zinc. He further observed that a similar met ... moreIin 1546 Georgius Agricola reported about a white metal which is fused to the Rammelsberg lead and silver melter and that you could scrape off. He called this metal "contrefey", because it could imitate gold. Agricola did not recognize that this metal was zinc. He further observed that a similar metal, which he named from some unknown reasons "ZINCUM" arose under similar circumstances in Silesia during smelting. |