All articles by Andrea Sella – Page 11

  • CLASSIC-KIT-310
    Opinion

    Mary's bath

    2009-06-29T10:22:00Z

    Approximately 2nd century AD. One of the earliest alchemists, inventor of the 'bain marie', the kerotakis apparatus and the tribikos still

  • CLASSIC-KIT-200
    Opinion

    Ostwald's viscometer

    2009-05-29T16:47:00Z

    One man who took little on trust was Wilhelm Ostwald. Born in Riga, Latvia, he studied chemistry at the University of Dorpat (now Tartu, Estonia).

  • CLASSIC-KIT-180
    Opinion

    Gaede's diffusion pump

    2009-04-28T09:50:00Z

    A new generation of faster, stronger and more reliable vacuum pumps

  • Periodic table of the elements – 60 – Neodymium
    Podcast

    Neodymium

    2009-04-08T00:00:00Z

    One of a pair of elementary twins that now turns up in toys, lasers and powerful magnets

  • CLASSIC-KIT-250
    Opinion

    Carius tube

    2009-03-30T10:51:00Z

    The Carius tube - still the workhorse of digestion reactions

  • Periodic table of the elements – 28 – Nickel
    Podcast

    Nickel

    2009-03-18T00:00:00Z

    How Kupfernickel inspired Nickel, with Andrea Sella

  • CLASSIC-KIT-250.
    Opinion

    Hirsch's funnel

    2009-02-23T11:44:00Z

    Separating crystals is a cinch using a Hirsch funnel, but it was not always thus

  • Opinion

    Abderhalden's drying pistol

    2009-01-28T08:58:00Z

    Humans have been preoccupied with purity for thousands of years

  • CLASSIC-KIT-190
    Opinion

    'Perkin's' triangle

    2009-01-08T10:14:00Z

    The vacuum distillation apparatus invented by Leonard Temple Thorne, but with Perkin's name on it

  • Periodic table of the elements – 59 – Praseodymium
    Podcast

    Praseodymium

    2008-12-24T00:00:00Z

    The 'green twin' from didymium safety glasses

  • Rudolf Signer (1903-1990)
    Opinion

    Signer's Osmometer

    2008-11-27T08:55:00Z

    Signer's elegant apparatus for measuring molecular weights in solution

  • CLASSIC-KIT-200
    Opinion

    Abbes refractometer

    2008-10-29T09:25:00Z

    The other day I found myself in the supermarket staring at a frozen cliff of buttery spreads

  • CLASSIC-KIT-200
    Opinion

    Claisen's flask

    2008-09-26T12:58:00Z

    In the name of effective multi-tasking, modern technology tries to combine as many functions into one small gadget as possible

  • Periodic table of the elements – 14 – Silicon
    Podcast

    Silicon

    2008-09-10T00:00:00Z

    Andrea Sella introduces the second most abundant element in Earth's crust

  • CLASSIC-KIT-300
    Opinion

    Raschig's rings

    2008-08-27T11:15:00Z

    Few who have listened to the music of Richard Wagner can remain indifferent to it.

  • Opinion

    Dewar's flask

    2008-07-30T08:05:00Z

    A thing of rare beauty which every chemist should have on their mantelpiece

  • CLASSIC-KIT-300
    Opinion

    Erlenmeyer flask

    2008-06-30T11:08:00Z

    George Bernard Shaw once described Britain and America as being 'two countries divided by a common language

  • CLASSIC-KIT-180
    Opinion

    Drechsel's bottle

    2008-05-28T09:08:00Z

    Western travellers to the East fuelled a fashion for Orientalism which reached its height in the 19th century

  • CLASSIC-KIT-300
    Opinion

    Kjeldahl flask

    2008-04-28T11:01:00Z

    Beer has made an immense contribution to humanity generally and to chemists in particular

  • Opinion

    Vigreux's column

    2008-03-26T13:06:00Z

    Does anyone blow glass in chemistry labs any more?