Soviet-made miniature 9-pin beam tetrode vacuum tube; Manufactured in former Soviet Union, 1980s;
Half of the anode has been removed from the vacuum tube.
The outermost electrode is the remaining half of the anode, then going inward the beam forming plates, screen grid, control grid, cathode and heater;
to share – to copy, distribute and transmit the work
to remix – to adapt the work
Under the following conditions:
attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.