Knoblauch's student and collaborator on the diamagnetism work was John Tyndall.
He published several works on sound and music theory, including The Musical Scale (1860), a Review of Tyndall on Sound (1872), and a pamphlet describing an instrument of his invention called the tetrachord.
After 1853 John Tyndall joined Huxley in running the science section of the Westminster Review and formed a group of evolutionists who helped pave the way for Charles Darwin's 1859 publication of On the Origin of Species and gave evolutionary ideas backing in the ensuing debate.
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In the mid-1970s New Cross and surrounding areas of south London became the focus of intense and sometimes violent political activity by neo-Nazis and members of the National Front (led by John Tyndall) and a breakaway faction (the National Party led by John Kingsley Read).
In 1859 Frankland passed a night on the very top of Mont Blanc in company with John Tyndall.
Despite this, Bean, soon clashed with Jordan over his extremism and before long Jordan had left to form the National Socialist Movement, taking emerging figures John Tyndall and Denis Pirie with him.
Joseph Dalton Hooker, John Tyndall and Thomas Huxley now formed a group of young naturalists holding Darwin in high regard, basing themselves in the Linnean Society of London which had just moved to Burlington House, Piccadilly, London, near the Royal Society.
Barrett then took chemistry and physics at the Royal College of Chemistry in London and then became the science master at the International College, London (1867–9) before becoming assistant to John Tyndall at the Royal Institution (1863–1866).