Original Fleming diode, 60 S16, (RMW/A1A - McVitie Weston number), by The Edison and Swan Electric Light Company Limited, c.1904, invented by Sir (John) Ambrose Fleming and used by Fleming in October 1904.
Hairpin carbon filament with the ends pasted to the platinum lead wires. Central nickel (?) plate with lead brought out to side. Dimensions of plate approx.: 30mm x 10mm. Spherical bulb 56.5mm diameter and height to top of pip 88.5 mm. Diameter at bottom of glass 17mm. Spherical bulb.
Used by Fleming in October 1904. Valve original but base is a replica.
Replica base, for original Fleming diode, 60 S16, (RMW/A1A - McVitie Weston number), by The Edison and Swan Electric Light Company Limited, 1904, invented by Sir (John) Ambrose Fleming. Valve was used by Fleming in October 1904 but base is replica.
Valve, part of Original Fleming diode, 60 S16, (RMW/A1A - McVitie Weston number), by The Edison and Swan Electric Light Company Limited, 1904, invented by Sir (John) Ambrose Fleming and used by Fleming in October 1904.
Hairpin carbon filament with the ends pasted to the platinum lead wires. Central nickel (?) plate with lead brought out to side. Dimensions of plate approx.: 30mm x 10mm. Spherical bulb 56.5mm diameter and height to top of pip 88.5 mm. Diameter at bottom of glass 17mm. Spherical bulb.
Used by Fleming in October 1904. Valve original but base is a replica.
