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Help
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, withing 24 hours on weekdays.
Customer service
All questions about your order, return and delivery must be sent to our customer service team by e-mail at yourstore@yourdomain.com
Sale & Press
If you are interested in selling our products, need more information about our brand or wish to make a collaboration, please contact us at press@yourdomain.com
Ehe ich nicht durch anderweitige Versuche widerlegt worden bin, muss ich es als erwiesen betrachten, dass wir es bei meinen Versuchen mit dem fluessigen Zustand des reinen Kohlenstoffs zu tun haben. Gedacht als simples Schlusswort eines Vortrages, entbrennt an dieser Aussage Otto Lummers seinerzeit eine hitzig gefuehrte Diskussion, die auch vor der Diamantindustrie nicht Halt macht, da eine kuenstliche Herstellung von Diamanten einer Revolution der Branche gleich kaeme. Schliesslich sieht sich der Autor gezwungen, das hier vorliegende Werk zu nutzen, um Klarheit ueber seine Forschungen zu schaffen und Stellung zu beziehen. Untermauert wird das Ganze durch eine Zusammenfassung der bis dato bekannten Geschichte des Kohlenstoffs. Qualitativ hochwertiger und bearbeiteter Nachdruck der Originalausgabe von 1914.
⚠️ WARNING (California Proposition 65):
This product may contain chemicals known to the State of California to cause cancer,
birth defects, or other reproductive harm.
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⚠️ California Proposition 65 Warning: Some products sold on this website may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.
