Image: Gold spectrum visible
Size of this preview: 800 × 138 pixels. Other resolutions: 320 × 55 pixels | 7,430 × 1,280 pixels.
Original image (7,430 × 1,280 pixels, file size: 32 KB, MIME type: image/png)
Description: Gold spectrum; 400 nm - 700 nm
Usage Terms: Public domain
Image usage
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