A photochemical logic gate is based on the photochemical intersystem crossing and molecular electronic transition between photochemically active molecules, leading to logic gates that can be produced.
Read more about Photochemical Logic Gate: The or Gate Electron–photon Transfer Chain, The ‘AND’ Gate, Creating The NOT Gate, See Also
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“Though living is a dreadful thing
And a dreadful thing is it
Life the niggard will not thank,
She will not teach who will not sing,
And what serves, on the final bank,
Our logic and our wit?”
—Philip Larkin (1922–1986)
“What heaven-entreated heart is this
Stands trembling at the gate of bliss;
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Whose definition is a doubt
‘Twixt life and death, ‘twixt in and out?”
—Richard Crashaw (1613?–1649)