Magnetic field lines around an iron wire
The image shows magnetic field lines around the end of an iron wire, which is magnetized along its length. The field of view is approximately 1µm. The image was acquired using electron holography in a field emission gun transmission electron microscope. (click to see full sized version)
Acknowledgments: John Thong, Ken Harada, Akira Tonomura, Tetsuya Akashi and Tsuyoshi Matsuda, Yoshihiko Togawa, Chris Boothroyd, Rafal Dunin-Borkowski.
Visit the University of Cambridge Department of Materials Science & Metallurgy Gallery.
I will post the others in this series over time. To see it all now, visit the Nanotechnology Now Gallery.
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