Spiral imaging

The main answers to the first question can be stated using geometrical metaphors. The successive stages may form a linear, a circular or a spiral movement. The spiral for our purpose is a combination of line and circle it returns toward the origin, but at ever-higher levels. It may also be expressed as a cycle superimposed on an upwards trend, or as a progression of the form "One step backward, two steps forward" (2.4.1). Vico is often credited with the invention of the spiral image of history, but the view was stated before him, with unsurpassable precision, by Leibniz. ... 

Figure A3.14.il. Spiral waves imaged by photoelectron electron microscopy for the oxidation of CO by O2 on a Pt(l 10) single crystal under UHV conditions. (Reprinted with pennission from [35], The American Institute of Physics.)...

Fig. 3.4.9 Two-dimensional slice images taken from a three-dimensional Spiral-SPRITE water uptake experiment [27]. (a) Initially dry,...

Fig. 4. AFM deflection image of the Cu(lll) surface during deposition of copper. The steps are one atom in height. In the upper left are two nested spiral terraces. 

The composite vector is seen to spiral around the z-axis and in projection moves anti-clockwise in a circle around the z-axis. The other component which is the mirror image of the first, performs a clockwise circular motion in projection along z. The decomposition into circularly polarized components can also be formulated in complex notation, Er = E0e t6. 

Fig. 9.12 Top view of folded path waveguide layouts using (a) a double spiral and (b) a grid configuration. Both images are taken using an InGaAs infra red camera while X 1550 nm light is coupled into the silicon waveguide chip...

Fig. 9.13 Mach Zehnder interferometer (MZI) sensor interrogation circuit using (a) conventional linear waveguide geometry and (b) folded spiral waveguide geometry. The dashed line in (b) indicates the sensor window boundaries in this infra red camera image...

Are you ready for the answer Here is the list of terms sorted in order of beauty as determined by my little survey of scientists and colleagues. The numbers in parentheses indicate the number of times the term was an individual s first choice dancing flames (31), snow crystal (20), mist-covered swamp (17), spiral nautilus shell (10), mossy cavern (5), kaleidoscope image (5), avalanche (4), computer chip (3), seagull s cry (3), tears on a little girl (3), trilobite fossil (2), glimmer of mercury (2), wine (2), asphalt (1). 

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