Which instrument did Van Allen use for his discovery?
Telescope
Microscope
Geiger-Müller Tube
Spectrometer
Answer
The Geiger-Müller tube was invented by Hans Geiger and Walther Müller in 1928 and is a device used to detect and measure ionizing radiation. It consists of a gas-filled tube with a central electrode and a wire surrounding the tube. When ionizing radiation passes through the tube, it ionizes the gas atoms, causing the electrons to be released.
Exploring the Outer Limits: The James Van Allen Quiz
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