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Swinton's microphonic telephone transmitter

1884

Photograph of positive electrical discharge

1892

X-Ray Pinhole Photographs Mounted on Stand

1898

X-ray tube with adjustable cathode and heavy anti-cathode

1897

Negative Discharge

1892

Negatives of discharge from 10" induction coil

1892
Experimental microphone telephone transmitter by Mr Campbell Swinton (1885) (two india rubber bands unfastened)

Experimental microphone telephone transmitter by Mr Campbell Swinton

1885
One cathode ray lamp with lime anti-cathode, designed by A.A. Campbell Swinton and made in 1897, on stand

One cathode ray lamp with lime anti-cathode

1897
Set of telephone apparatus, patented by Mr A. A. Campbell Swinton in 1885 (constructed in 1887)

Telephone apparatus

1885-1887
[Letters, 1926 Dec 21 and 1928 Mar 8 to] Llewelyn B. Atkinson / A.A.C. Swinton, discussing developement of television and particularly Baird's apparatus. With photocopied letter of Atkinson to ScM]

Letters, 1926 Dec 21 and 1928 Mar 8 to Llewelyn B. Atkinson

1926-1928
Rotary mercury vacuum pump, designed by Alan Archibald Campbell Swinton, London, England, 1890-1916.

Campbell Swinton's rotary mercury vacuum pump

1890-1916
Two prints made by Alan Archibald Campbell Swinton from negatives of electrical discharges taken by him in 1892.

Two Prints of Electrical Discharges

1892