46.0 MB (3.4 MB compressed)
3264 x 4928 pixels
27.7 x 41.7 cm ⏐ 10.9 x 16.4 in (300dpi)
PHOTO RESEARCHERS, INC. / SCIENCE PHOTO LIBRARY PHOTO RESEARCHERS, INC. / SCIENCE PHOTO LIBRARY
Carbon film resistors. A resistor is a passive component used to control current in a circuit. The coloured bands on the resistors represent voltage and tolerance. Each colour stands for a number: three bands show the resistor's value in ohms, and the fourth shows its tolerance.
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