You know what it looks like… but what is it called?
TAKE THE QUIZ“Geissler”
The following 3 entries include the term Geissler.
Geissler bulb
noun: a potash bulb consisting usually of two upper bulbs connected by three lower smaller bulbs —often used in plural
Geissler pump
noun: an air pump based on the principle of the Torricellian vacuum and having its vacuum produced by the flow of mercury back and forth between a fixed and a vertically adjustable reservoir
Geissler tube
noun: a gas-filled discharge tube having various shapes and usually a narrowly constricted portion in which the luminosity is intensified
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Merriam-Webster unabridged
