We acknowledge Australia’s First Nations Peoples as the Traditional Owners and Custodians of the land and give respect to Elders – past and present – and through them to all Aboriginal and Torres Strait Islander peoples.

Electronic vacuum tube decade counter by CSIRO

This vacuum tube is made from hand blown glass and contains within the tube, an assembly of metal parts consisting in an electron gun or cathode, a set of grids for controlling the secondary emissions from the beam and a set of deflection plates for controlling the projection of the electron beam from the cathode.
View object record