Radio Frequency Bridge [Wayne Kerr Laboratories]

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1483 results. Displaying results 1 - 50.

Radio frequency bridge made by Wayne Kerr Laboratories in New Malden, Surrey England. Model B601, designed as a multi-ratio instrument for the measurement of resistance, capacitance and inductance over a wide range of values. Used by Dr JB Gregory from the University of Canterbury in his research at Scott Base (Antarctica) in the late 1950s to study the characteristics of the lower polar ionosphere (D Region) and to measure the height, strength and time of radio wave reflections originating at low heights in the ionosphere. Dr Gregory found that the emission of protons from solar flares was more frequent than previously known and contributed to the ionization in the polar atmosphere which resulted in radio blackouts that significantly impacted the use of high frequency radio-based technology in Antarctica.

Radio Frequency Bridge [Wayne Kerr Laboratories] <C> The Wayne Kerr Laboratories Limited

Navigational Computer

Drill, Contact Lens [Polymethyl metacrylate (PMMA)] Hirst Contact Lens Limited 1968

Lathe, Standard Contact Lens Robertson Engineering Limited 1980

Vertometer, Haptic Hirst Contact Lens Limited Department of Scientific & Industrial Research 1946 1947

Engraver, Contact Lens G. Nissel & Company Limited

Vertometer Bausch and Lomb Optical Company Hirst Contact Lens Limited

Prototype PMMA contact lenses Hirst Contact Lens Limited 1968 1960

Con-o-coid Contact Lens trial set Hirst Contact Lens Limited David Volk Eugene Hirst 1966

Machine, Optical Polishing Hirst Contact Lens Limited 1954

Eye Piece screw thread

Bomb [Practice]

Taxi Meter [Novel] Nishibe Keiki Manufacturing Company Limited Taximeter Services Limited

Eye chart Down Bros.

Tracer Bullet, 50 Calibre

Practice bomb Circa 1940

Button

Date Stamper New Zealand Rail The Elden Engeneering Company

Instrument - Optical Clement Clarke

Box of Bullets

Cartridge and Clip

Cartridge and Clip [Lancaster Machine Gun] Great Britain. Royal Air Force

Cannon Shell 1943

1483 results. Displaying results 1 - 50.

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