Aston dark space
the dark region between the cathode and the cathode glow in a vacuum tube, occurring when the pressure is low.
IS YOUR DESERT PLANT KNOWLEDGE SUCCULENT OR DRIED UP?
Cactus aficionados, don't get left in the dust with this quiz on desert plants. Find out if you have the knowledge to survive this prickly foray into the desert!
Question 1 of 7
This tall, horizontally branched cactus is probably the most recognizable cactus in Arizona. What is it called?
Origin of Aston dark space
named after F. W. Aston
Words nearby Aston dark space
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020