Dirac sea
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In relativistic quantum mechanics, the completely filled, infinite set of negative energy electron states that makes up a vacuum. If a negative energy electron is promoted to a positive energy state, the hole it leaves behind has the properties of a positron.
QUIZ
QUIZ YOURSELF ON "WAS" VS. "WERE"!
Were you ready for a quiz on this topic? Well, here it is! See how well you can differentiate between the uses of "was" vs. "were" in this quiz.
Question 1 of 7
“Was” is used for the indicative past tense of “to be,” and “were” is only used for the subjunctive past tense.
Words nearby Dirac sea
dir., Dirac, Dirac constant, Dirac delta function, Dirac's constant, Dirac sea, diradical, Dirae, dirdum, dire, direc. prop.
The American Heritage® Science Dictionary
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