Dark current is the constant response exhibited by a receptor of radiation during periods when it is not actively being exposed to light. It may refer to:
- Dark current (biochemistry) : The depolarizing current, carried by Na+ ions, that flows into a photoreceptor cell when unstimulated.
- Dark current (physics): The relatively small electric current that flows through a photosensitive device when no photons are entering the device.
- Dark current (chemistry) : The constant response produced by a spectrochemical receptor, in the absence of radiation.
Famous quotes containing the words dark and/or current:
“If this be love, to clothe me with dark thoughts,
Haunting untrodden paths to wail apart;
My pleasures horror, music tragic notes,
Tears in mine eyes and sorrow at my heart.
If this be love, to live a living death,
Then do I love and draw this weary breath.”
—Samuel Daniel (1562–1619)
“For the purpose of knowledge, one must know how to use that inner current that draws us to a thing, and then the one that, after a time, draws us away from it.”
—Friedrich Nietzsche (1844–1900)