Dirac sea

Save This Word!

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.

true

false

TAKE THE QUIZ TO FIND OUT

Words nearby Dirac sea

dir., Dirac, Dirac constant, Dirac delta function, Dirac's constant, Dirac sea, diradical, Dirae, dirdum, dire, direc. prop.

How to use Dirac sea in a sentence

My dad was a sailor, and all through my childhood he was away half of the time at sea, and to an extent I have a similar job.
Belle & Sebastian Aren’t So Shy Anymore|James Joiner|January 7, 2015|DAILY BEAST
It is the only tourist center Ukraine has left on the Black Sea, since Russia annexed Crimea last spring.
Is Putin Turning to Terrorism in Ukraine?|Anna Nemtsova|January 6, 2015|DAILY BEAST
The wreckage lies no more than around 100 feet down in the Java Sea.
Flight 8501 Poses Question: Are Modern Jets Too Automated to Fly?|Clive Irving|January 4, 2015|DAILY BEAST
And for those on the Palestinian right who still dream of driving the Jews into the sea, they too can forget it.
In the Middle East, the Two-State Solution Is Dead|Dean Obeidallah|January 2, 2015|DAILY BEAST

Search teams find dozens of people and jet debris floating in the Java Sea, as the airline confirms the wreckage is from QZ8501.
Wreckage, Bodies of AirAsia Crash Found|Lennox Samuels|December 30, 2014|DAILY BEAST
Edna did not reveal so much as all this to Madame Ratignolle that summer day when they sat with faces turned to the sea.
The Awakening and Selected Short Stories|Kate Chopin
Edna Pontellier, casting her eyes about, had finally kept them at rest upon the sea.
The Awakening and Selected Short Stories|Kate Chopin
The countries about the eastern part of the Mediterranean Sea and its adjoining waters.
Gulliver's Travels|Jonathan Swift
All things that are of the earth, shall return to the earth again, and all waters shall return to the sea.
The Bible, Douay-Rheims Version|Various
Worst danger zone, the open sea, now traversed, but on land not yet out of the wood.
Gallipoli Diary, Volume I|Ian Hamilton