Principles of Phase Contrast (Electron) Microscopy
نویسنده
چکیده
In phase-contrast light and electron microscopy, one exploits the wave properties of photons and electrons respectively. The principles of imaging with waves are the realm of “Fourier Optics”. As a very first experiment (“Gedankenexperiment”), let us think back to days when we – as children – would focus the (parallel) light waves of the (far away) sun on a piece of paper in order to set it alight. What lesson did we learn from these early scientific experiments (Fig. 1)?
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