What is another word for acorn tube?
Pronunciation: [ˈe͡ɪkɔːn tjˈuːb] (IPA) 
Acorn tube is a type of vacuum tube that was common in the early 20th century. It is also known as a klystron or a cavity tube. Other synonyms for the acorn tube include thyratron, magnetron, and tetrode. These tubes were used in early electronic devices, including radios and televisions, as well as in scientific research. However, with the advent of transistors and other solid-state electronic components, the use of vacuum tubes has largely been phased out. Nonetheless, acorn tubes remain an important part of the history of electronics and continue to be used in some specialized applications.
