DID YOU KNOW...?

Physicists, scientists, engineers and researchers from the past and present have made significant contributions to the foundations and development of vacuum science and technology. From the beginnings of the electron spectroscopy to the workings of vacuum pumps, here are some interesting vacuum science facts and untold stories you may not know about.  

Evangelista Torricelli

Evangelista Torricelli

1643: Barometer

Torricelli was a student Galileo and developed the first mercury filled glass tube known as the ‘Barometer’. He is also known for writing ‘Torricelli’s law’ which centred on speed of a fluid flowing out of an opening.

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Marcello Stefano Pirani

Marcello Stefano Pirani

1906: Pirani Gauge

Pirani developed the first automatically reading gauge known as the ‘Pirani gauge’. He also worked on optical vacuum measurements of high temperatures.

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fernand holweck

Fernand Holweck

1920: Molecular Pump

French scientist Holweck made a significant impact on a range of activities such as x-rays, the gravimetric pendulum, electrons and the Holweck molecular vacuum pump which achieved vacuum levels of 10-6 mbar.

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Pieter Clausing

1926 - 1933: The Beaming Effect

Clausing worked on a range of activities relating to vacuum physics such as the diffuse reflection of molecules from surfaces and the ‘beaming’ effect associated with molecules exiting tubes.

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Manne Siegbahn 2

Manne Siegbahn

1944: Siegbahn Pump

Siegbahn was a Swedish physicist who won the Nobel Prize for Physics in 1924 for his discoveries and research in the field of X-ray spectroscopy. He was responsible for the development of the Siegbahn Pump.

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henry wycliffe

Henry Wycliffe

1984: Edwards Dry Pump

Wycliffe worked with Edwards for 44 years and is best known for patenting the dry pump. Find out how this came about in this exclusive conversation.

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