Record

RefNoACS/1/2/1/663
AltRefNo741
LevelItem
TitleLetter from [Alan Archibald Campbell] Swinton, to H. T. Ellis [Esquire], Wren Head
CreatorSwinton; Alan Archibald Campbell (1863-1930); British electrical engineer
Date25 April 1921
DescriptionApologises for his delayed response and enquires when Ellis is due to be in town so he can show him his new apparatus. Informs he has a new amplifier with tuned intervalve transformers, commenting on how much more effective it is thant the resistance capacity cpupled amlifier. Comments on his recent work involving the reception of signals on a frame entirely closed in a box. States that he used a box covered all over with copper wire and iron wire netting, and with this he shall get the Eiffel Tower signals. He is now making a box of sheet copper and is interested to see whether he still gets signals inside of it. Informs of his interesting correspondence with Oliver Lodge on the subject, commenting that Lodge found that with short Hertzian waves, the wire netting was almost a complete screen.
Extent2p
FormatTypescript
PhysicalDescriptionCarbon
AccessStatusOpen
Fellows associated with this archive
CodePersonNameDates
NA8285Swinton; Alan Archibald Campbell (1863 - 1930); electrical engineer1863 - 1930
NA8070Lodge; Sir; Oliver Joseph (1851 - 1940); physicist1851 - 1940
Add to My Items

    Collection highlights

    Browse the records of some of our collections, which cover all branches of science and date from the 12th century onwards. These include the published works of Fellows of the Royal Society, personal papers of eminent scientists, letters and manuscripts sent to the Society or presented at meetings, and administrative records documenting the Society's activities since our foundation in 1660.

    The Royal Society

    The Royal Society is a Fellowship of many of
    the world's most eminent scientists and is the
    oldest scientific academy in continuous existence.
    Registered charity number 207043

    Website design ©CalmView



    CONTACT US

    + 44 207 451 2500
    (Lines open Mon-Fri, 9:00-17:00. Excludes bank holidays)

    6-9 Carlton House Terrace, London SW1Y 5AG

    Email Us →

    SUBSCRIBE

    Subscribe to our newsletters to be updated with the
    latest news on innovation, events, articles and reports.

    Subscribe →

    © CalmView