A polarized light micrograph of dopamine crystals.
Spike Walker, last night’s winner of the Royal Photographic Society's Combined Royal Colleges Medal, produced this image by passing polarized light through dopamine crystals. How the crystals refract the light varies depending on their orientation within the sample, causing them to reflect light at different wavelengths. Using this technique highlights more detail in the crystal structure than regular observation through a microscope.
Image via Wellcome Images
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