Reference numberMS/928/2/24
TitleLetter from Carl Braun, Mariaschein, Bohemia, to Charles Vernon Boys
Date10 October 1899
DescriptionBraun is continuing his labours with zeal after Boys's help. The arm measurements must be done again, because the micrometer was faulty and must be sent back to the maker. Notes that he forwarded a letter to Prague for Boys although the letter was accidentally opened. He thinks that Boys will have seen Professor Mach's photographs of flying projectiles while in Prague. The observatory director there, Weineck, is very kindly. Braun wishes to measure the strength of the quartz fibres supplied by Boys - his measurements of their thickness mostly agrees with those of Boys.
Physical descriptionOn paper
Access statusOpen
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


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

    Subscribe →

    © CalmView