Eltjo Haselhoff studied experimental physics, specializing in high power gas lasers, non-linear optics and ultra-short optical pulse detection. After obtaining his M.Sc. degree, he worked at several European research institutes, and at Los Alamos National Laboratories, USA. His main activities were in the fields of non-linear optics, high power gas and free-electron laser research, accelerator technology, ultra-high vacuum technology, semiconductor photo-emission cathodes for high current electron beam accelerators and ultra-fast optical infrared switches. In May 1993 he obtained his Ph.D. in physics, after successfully defending his thesis Aspects of A Compton Free-Electron Laser. Today he works as a Senior Scientist in the Magnetic Resonance Marketing Department of a leading provider of professional medical imaging equipment. The author holds several patents in the field of Magnetic Resonance Imaging. In the strict scientific period of his professional life (1985 - 1994) he published many articles in peer-reviewed scientific journals on (electro-) optics, lasers and general matters, such as Optics Communications, IEEE Journal of Quantum Electronics, Journal of Applied Physics and The Physical Review.

Dr. Haselhoff is author of two crop circle books, including the recent and much renowned The Deepening Complexity of Crop Circles, which has now appeared in five languages, and is the basis of this presentation. He is also one of only two people to have had a paper published on crop circles in a peer-reviewed scientific journal (‘Physiologa Plantarum’). This publication discusses the relationship between crop circle creation and 'balls of light'. Besides crop circles, the author has many other interests, such as music (he plays several musical instruments and builds acoustic guitars), art painting, cartoon drawing, martial arts and photography. www.deepeningcomplexity.com

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