Images Dated 19th May 2018 (page 51)

Five diagrams illustrating the theory of light and shade, c1472-c1519 (1883). Artist: Leonardo da Vinci
Five diagrams illustrating the theory of light and shade, c1472-c1519 (1883). From The Literary Works of Leonardo Da Vinci, Vol. 1 by Jean Paul Richter, PH. DR

Greenwichs largest telescope, 1938. Churchmans cigarette card, from a series titled Modern Wonders [WA & AC Churchman, Great Britain & Ireland, 1938]

Pair of giant motors, 1938. Churchmans cigarette card, from a series titled Modern Wonders [WA & AC Churchman, Great Britain & Ireland, 1938]

Huge vertical boring mill, 1938. Churchmans cigarette card, from a series titled Modern Wonders [WA & AC Churchman, Great Britain & Ireland, 1938]

6000-ton forging press, 1938. Churchmans cigarette card, from a series titled Modern Wonders [WA & AC Churchman, Great Britain & Ireland, 1938]

Huge triple expansion pumping engine, 1938. Churchmans cigarette card, from a series titled Modern Wonders [WA & AC Churchman, Great Britain & Ireland, 1938]

Benzole recovery plant, 1938. Benzole was a product extracted from coal tar consisting mainly of a mixture of Benzene and Toluene. It was added to petrol and used as a motor fuel

The Stroboglow, 1938. The Stroboglow was a portable stroboscope invented by technicians at Westinghouse. It was used to study moving objects by making them appear stationary in order to spot defects

Magnet that lifts 46 tons, 1938. Churchmans cigarette card, from a series titled Modern Wonders [WA & AC Churchman, Great Britain & Ireland, 1938]

Cleaning air by electricity, 1938. Churchmans cigarette card, from a series titled Modern Wonders [WA & AC Churchman, Great Britain & Ireland, 1938]

Gigantic electric lamp, 1938. Churchmans cigarette card, from a series titled Modern Wonders [WA & AC Churchman, Great Britain & Ireland, 1938]

High voltage test house, 1938. Churchmans cigarette card, from a series titled Modern Wonders [WA & AC Churchman, Great Britain & Ireland, 1938]

Million volt X-ray tube, 1938. Churchmans cigarette card, from a series titled Modern Wonders [WA & AC Churchman, Great Britain & Ireland, 1938]

High power grid-glow tube, 1938. Churchmans cigarette card, from a series titled Modern Wonders [WA & AC Churchman, Great Britain & Ireland, 1938]

The Ignitron tube, 1938. Invented by Joseph Slepian, an employee of Westinghouse, the Ignitron is a gas-filled tube known as a mercury-arc rectifier

The Boulder Dam, USA, 1938. Churchmans cigarette card, from a series titled Modern Wonders [WA & AC Churchman, Great Britain & Ireland, 1938]

The Gyrotiller, 1938. Also known as a diesel rotary plough, the Gyrotiller was an agricultural machine used to break up hardpan and heavy clay soils, as well as removing roots and tree stumps

The Dynasphere, 1938. The Dynasphere was a monowheel vehicle patented by JA Purves in 1930. Churchmans cigarette card, from a series titled Modern Wonders [WA & AC Churchman, Great Britain & Ireland

All-electric signal box, 1938. Churchmans cigarette card, from a series titled Modern Wonders [WA & AC Churchman, Great Britain & Ireland, 1938]

The Bathysphere, 1938. A deep sea submersible invented by Otis Barton for the naturalist William Beebe. Churchmans cigarette card, from a series titled Modern Wonders [WA & AC Churchman

The Gyro-Stabiliser, 1938. One of three gyroscopic stabilisers built by the Sperry Gyroscope Company for the Italian liner Conte di Savoia in order to improve passenger comfort

The Queen Mary at Southampton, 1938. Churchmans cigarette card, from a series titled Modern Wonders [WA & AC Churchman, Great Britain & Ireland, 1938]

Deteting unseen enemies, 1938. Churchmans cigarette card, from a series titled Modern Wonders [WA & AC Churchman, Great Britain & Ireland, 1938]

Sealed flying suit, 1938. Churchmans cigarette card, from a series titled Modern Wonders [WA & AC Churchman, Great Britain & Ireland, 1938]

The Flying Triangle, 1938. Churchmans cigarette card, from a series titled Modern Wonders [WA & AC Churchman, Great Britain & Ireland, 1938]

The Westland-Hill Pterodactyl, 1938. Experimental aircraft designed by Geoffrey TR Hill and built by Westland Aircraft Ltd

The Short Mayo Composite aircraft, 1938. Churchmans cigarette card, from a series titled Modern Wonders [WA & AC Churchman, Great Britain & Ireland, 1938]

Princess Arthur of Connaught, 1935. Ardath cigarette card, from a series of 50 commemorating the Silver Jubilee of King George V, 1935

Prince Arthur of Connaught, 1935. Ardath cigarette card, from a series of 50 commemorating the Silver Jubilee of King George V, 1935

Princess Louise, 1935. The wife of Prince Arthur, Duke of Connaught. Ardath cigarette card, from a series of 50 commemorating the Silver Jubilee of King George V, 1935

The Duke of Connaught, 1935. Ardath cigarette card, from a series of 50 commemorating the Silver Jubilee of King George V, 1935

The Honourable Gerald Lascelles, 1935. The younger son of Henry Lascelles, 6th Earl of Harewood, and Mary, Princess Royal

Viscount Lascelles, 1935. George Lascelles, the eldest son of Henry Lascelles, 6th Earl of Harewood, and Mary, Princess Royal

The Earl of Harewood, 1935. Henry Lascelles, 6th Earl of Harewood, husband of Mary, Princess Royal, the daughter of King George V

The Princess Royal, 1935. Ardath cigarette card, from a series of 50 commemorating the Silver Jubilee of King George V, 1935

The Princess Royal, President of Girl Guide Association, 1935. Ardath cigarette card, from a series of 50 commemorating the Silver Jubilee of King George V, 1935

The Princess Royal in Volunteer Aid Detatchment (VAD) uniform, c1910s (1935). Ardath cigarette card, from a series of 50 commemorating the Silver Jubilee of King George V, 1935

The Duchess of Kent, 1935. Ardath cigarette card, from a series of 50 commemorating the Silver Jubilee of King George V, 1935

The Duke of Kent, 1935. Ardath cigarette card, from a series of 50 commemorating the Silver Jubilee of King George V, 1935

The Duke of Kent when he was a midshipman in the Royal Navy, c1920s (1935). Ardath cigarette card, from a series of 50 commemorating the Silver Jubilee of King George V, 1935

The Duke of Gloucester in the uniform of a captain of the 10th Royal Hussars, 1935. Ardath cigarette card, from a series of 50 commemorating the Silver Jubilee of King George V, 1935

The Duke of Gloucester, 1935. Ardath cigarette card, from a series of 50 commemorating the Silver Jubilee of King George V, 1935

The Duke of York when he was a Flight Lieutenant in the RAF, c1918 (1935). Ardath cigarette card, from a series of 50 commemorating the Silver Jubilee of King George V, 1935

Princess Margaret, 1935. Ardath cigarette card, from a series of 50 commemorating the Silver Jubilee of King George V, 1935

The Duchess of York, 1935. Ardath cigarette card, from a series of 50 commemorating the Silver Jubilee of King George V, 1935

The Duke of York, 1935. Ardath cigarette card, from a series of 50 commemorating the Silver Jubilee of King George V, 1935

The Duke of York at the time of his wedding, 1923 (1935). Ardath cigarette card, from a series of 50 commemorating the Silver Jubilee of King George V, 1935

The future King Edward VIII when he was a cadet in the Royal Navy, c1907-c1910 (1935). Ardath cigarette card, from a series of 50 commemorating the Silver Jubilee of King George V, 1935

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