SKU: 86671974442

Zwarte Toermalijn

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Zwarte ToermalijnZwarte toermalijn, wetenschappelijk bekend als Schorl, is een van de meest voorkomende leden van de toermalijn familie. Deze steen is zeer gewaardeerd in zowel wetenschappelijke als metafysische kringen vanwege zijn unieke eigenschappen en uiterlijk. Zwarte toermalijn is een complex boor silicaat mineraal. Het bevat een mix van verschillende elementen waaronder natrium, ijzer, aluminium, silicium, boor en zuurstof, samen met hydroxylgroepen. Dit

Zwarte toermalijn, wetenschappelijk bekend als Schorl, is een van de meest voorkomende leden van de toermalijn familie. Deze steen is zeer gewaardeerd in zowel wetenschappelijke als metafysische kringen vanwege zijn unieke eigenschappen en uiterlijk. Zwarte toermalijn is een complex boor-silicaat mineraal. Het bevat een mix van verschillende elementen waaronder natrium, ijzer, aluminium, silicium, boor en zuurstof, samen met hydroxylgroepen.

 Dit mineraal kristalliseert in het trigonale kristalstelsel. Het vormt vaak langwerpige, kolom achtige kristallen die soms gegroefd zijn langs de lengte van het kristal. De kristallen hebben een kenmerkende striatie langs de lengteas.  Zoals de naam al aangeeft, is zwarte toermalijn meestal diep zwart van kleur, hoewel het soms kan voorkomen in donkerblauwe tot bruine tinten. De zwarte kleur is te danken aan de hoge concentraties van ijzer.

Een interessant kenmerk van tourmalijn is zijn pyro-elektrische en piëzo-elektrische eigenschappen. Wanneer het verwarmd of onder druk gezet wordt, kan het een elektrische lading ontwikkelen. Dit heeft geleid tot diverse wetenschappelijke toepassingen en studies.


✧ Werking 

Zwarte toermalijn staat bekend om zijn vermeende vermogen om negatieve energie af te weren. Velen geloven dat het als een schild fungeert, dat negatieve gedachten en externe invloeden absorbeert en neutraliseert. Deze steen wordt vaak gebruikt voor aarding, een praktijk die bedoeld is om een diepe verbinding met de aarde te bevorderen en een gevoel van evenwicht en stabiliteit te creëren. Velen gebruiken zwarte toermalijn voor het verminderen van stress en angst, gelovend dat het een kalmerende invloed heeft op de drager of de omgeving waarin het zich bevindt. Vanwege de geleidende aard van toermalijn, geloven sommigen dat het effectief is in het beschermen tegen elektromagnetische velden van elektronische apparaten. (EMV)

✧ Afmeting

Bij bestelling ontvang je het kristal van de foto
De lengte van de hanger is totaal 42mm
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SKU: 86671974442

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Arthur E. Williams
Birmingham, US
★★★★★ 5
A Refreshing Approach to Presentations
Format: Paperback
I ran across this book while researching a college workshop on perfecting presentation, dealing with public speaking and effective use of PowerPoint. As one who has suffered through numerous electronic slides that did little or nothing to augment the speaker's efforts, I was delighted to see this fresh and innovative approach. I believe this process works best, however, when one's speech is primarily persuasive in nature. Although these ideas helped me set up a strong introduction and conclusion, in a recent lecture I resorted to bullet points for the material I felt the students had to master. Perhaps as I get more used to Atkinson's technique, I'll better about using it in lecture. However, the business applications seem quite worthwhile. My students' workshop presentations that used his techniques were highly engaging. I highly recommend this book and the supporting web site.
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Reviewed in the United States on August 24, 2006
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db
Port Orchard, US
★★★★★ 1
Simplistic and Inappropriate
Format: Paperback
I was hoping this book would provide insights into how to present complex information in a more comprehensible, useful format, using PowerPoint as the tool. Instead, the overall gist of this book is that presentations should be "dumbed down" as much as possible. The theme the author presents is that presentations should be story based. This is reasonable. However, the method the author recommends is that essentially *all* meaningful, complex (or, as the author prefers "boring") content be removed from the presentation. Presentations then become nothing more than catchy headlines and colorful graphics. All content should be in the presenter's notes (not typically to be provided). This is juvenile and useless and frankly reflects a complete lack of understanding of how presentations are made in a complex business environment.
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Reviewed in the United States on March 14, 2007
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SteelBlue
Omaha, US
★★★★★ 3
On the right track
Format: Paperback
This book is a good introduction about how to use story-telling techniques in PowerPoint presentations. There are some good ideas here that you won't find in technical manuals. If you don't know film techniques these will be eye-opening. But the book could have been much stronger if it were to push these concepts to the next level. I saw a PowerPoint presentation with Andy Goodman, who teaches more or less the same thing, and his presentation nailed these concepts more cleanly than this book does. But again, this book is definitely worth checking out if you haven't studied storytelling before.
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Reviewed in the United States on December 2, 2005
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An oldd Clancy fan
Birmingham, US
★★★★★ 2
Make sure you buy the 2007 edition!!!!
Format: Paperback
I bought the book, enjoyed it and then realized that I hasd purchased the 2005 edfition and not the new 2007 edition. be careful as the new one is much better. Amazon should have made this clear!!!!!!!!!!!!
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Reviewed in the United States on December 8, 2007
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Wade Armstrong
Omaha, US
★★★★★ 5
An Essential
Format: Paperback
I've created PowerPoints for executives in major corporations and national non-profits for years now, and this is one of the first books I suggest anyone who needs to create their own PowerPoint look to. Beyond Bullet points is accessable enough that the novice PowerPoint user can understand what's going on and use the lessons in his or her next presentation; it's also detailed and challenging enough that even an old salt like me can find things to learn and do. Don't be another person who stands on stage reading their PowerPoint, and don't let reading your slides distract the audience from your presentation; follow the suggestions in this book and wow your audience.
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Reviewed in the United States on January 3, 2007

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