Glass tube, possibly a discharge tube
Glass tube, possibly a discharge tube
Glass tube, possibly a discharge tube
Glass tube, possibly a discharge tube
Glass tube, possibly a discharge tube
Glass tube, possibly a discharge tube
Glass tube, possibly a discharge tube
Glass tube, possibly a discharge tube
Discharge tube
1900-1925
Glass tube, possibly a discharge tube
Glass tube, possibly a discharge tube
Glass tube, possibly a discharge tube
Glass tube, possibly a discharge tube
Glass tube, possibly a discharge tube
Glass tubes, possibly a discharge tube
Discharge tube with three electrodes
1900-1925
Discharge tube with three electrodes
1900-1925
Discharge tube with two wire electrodes
1900-1925
Discharge tube with two electrodes
1900-1930
Inert gas discharge tubes, c 1960s.
1960-1969
Six glass discharge tubes containing hydrogen
1801-1850
Glass discharge tube
Glass discharge tube
Discharge tube
1900-1925