Crookes dark space

Save This Word!

noun Physics.

the dark space between the cathode glow and the negative glow in a vacuum tube, occurring when the pressure is low.

QUIZ

WILL YOU SAIL OR STUMBLE ON THESE GRAMMAR QUESTIONS?

Smoothly step over to these common grammar mistakes that trip many people up. Good luck!

Question 1 of 7

Fill in the blank: I can’t figure out _____ gave me this gift.

Also called Crookes space .

Origin of Crookes dark space

First recorded in 1890–95; after Sir W. Crookes

He wore white gloves, a dignified long black coat, and matching pants and vest, and he carried a dark walking stick.
The Black Man Who Replaced Jefferson Davis in the Senate|Philip Dray|January 7, 2015|DAILY BEAST
I thought about the mother, her fear of the dark, of the harm she feared might come to her daughters.
I Tried to Warn You About Sleazy Billionaire Jeffrey Epstein in 2003|Vicky Ward|January 7, 2015|DAILY BEAST
Then she managed to struggle a mile through dark, rainy woods.
The 7-Year-Old Plane Crash Survivor’s Brutal Journey Through the Woods|James Higdon|January 7, 2015|DAILY BEAST
These are dark times for network TV, but experiments like Galavant are the silver lining.
‘Galavant’: A Drunken, Horny Musical Fairy Tale|Melissa Leon|January 5, 2015|DAILY BEAST

Luke Skywalker is an evil robot who has fallen to the dark side of the force.
Juiciest ‘Star Wars: The Force Awakens’ Rumors (and Some Debunked Ones)|Rich Goldstein|January 3, 2015|DAILY BEAST
Ripperda's eye fell upon the mantle,—it was discoloured a dark red in many places, he nodded his head, and the man withdrew.
The Pastor's Fire-side Vol. 3 of 4|Jane Porter
He glanced aside, and saw an exceedingly pretty, dark face, which looked vaguely familiar.
Rosemary in Search of a Father|C. N. Williamson
Down in his galleries and chambers where it was dark as a pocket Grandfather Mole enjoyed himself thoroughly.
The Tale of Grandfather Mole|Arthur Scott Bailey
His dark, shining, almost too intelligent eyes looked at Nigel, and looked away.
Bella Donna|Robert Hichens
The seeds of some species are of a dark brown while others are of a lighter shade.
Tobacco; Its History, Varieties, Culture, Manufacture and Commerce|E. R. Billings.