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Early form of potassium photoelectric cell

1927

Western Electric photoelectric cell

Photoelectric Cell

"Arcturus" photolytic photoelectric cell

Early form of potassium photoelectric cell

1927

Early type of photoelectric cell

1928

Early form of type Cs photoelectric cell

1929

Photoelectric Cell

Thin sheets of slate(?) coated with photoelectric medium with zigzag scratching. Dated 17/11/16 and 20/7/16.

Experimental Photoelectrical Cells

Experimental ? Vacuum photocell. Sprayed interior of spherical glass with wire ring electrode with wire connections.

Vacuum Photocell

Early photoelectric cell, type CMG8

Early photoelectric cell

2.5 x 2.5cm ceramic plate with photoelectric coating. Held by two copper strips with brass terminals mounted on an ebonite base.

Photoelectric Cells

Small photocell 5 x 5mm across two brass blocks with insulating divider. Faced with insulation top and bottom. Mica protective window. No.709.

Photoelectric Cells