Wilhelm Conrad R

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Wilhelm Conrad Roentgen
1845-1923 His X-rays changed medicine
technology
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Structure

• Biography
• X-rays
• Domains
• Historical events
• Interview with Roentgen

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Biography

• Youth
• Study
• Work area

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Youth
27th March 1845 Wilhelm Conrad Roentgen
was born in Lennep (Remscheid) 1861-1863 He
visited the technical school in Utrecht He
left without school leaving examination
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Study
1865-1868 Entrance exam instead of school
leaving examination Study of
mechanical engineering in Zurich 1868
Diploma as a mechanical engineer After
that study of physics
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Work area
1870 Publication of Annalen of Physics
and Chemistry 8th November 1895 Roentgen
discovered the X-rays 22nd November 1895
First X-ray pictures 28th December 1895
Manuscript A new kind of rays ("Eine neue Art
von Strahlen") Roentgen pointed to the
medicine use at the publication The deadly
side effects of the X-rays were unknown for a
long time 1st April 1900 Roentgen got the
professorship at University Munich 10th December
1901 Awarding of the Nobel Prize of
Physics 1st April 1920 Roentgen was
retired in Munich 10th February 1923
Wilhelm Conrad Roentgen died in Munich
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The X-RAYS

• Pure research
• The X-rays
• Applications property

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Pure research
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The X-rays
On 8th November 1895 Roentgen carried out the
experiment with a charge. He covered the
discharge tube completely with black paper, and
light couldn't get out of the tube. Next to the
building he put up a screen with a special mass
that lighted up when it was illuminated. The
screen lighted up, although light couldn't get
out of the discharge tube through the black
paper. Because of different reasons the rays
couldn't be cathode rays. He took the screen and
carried it to the tube. After that the light
became stronger and the bones of his fingers
appeared on the screen. So the rays came through
the human body. Roentgen called them X-rays.
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Glass flask
Black paper
Screen
Visible beams of light
X-rays
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Applications Property
Application Property
in medicine in metallurgy in technology in chemical Fundamental research (very important) invisible for human eyes ionisers air, gas and light molecules carcinogenic short wave light
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Domains
Universities Roentgen's work
Zurich Doctorate of physics at University Zurich
Strasbourg Habilitation at University Strasbourg
Hohenheim Professorship in Physics and Mathematic at agricultural Academy Hohenheim
Giessen Vocation to Giessen as professor
Wuerzburg Vocation for an ordination in Wuerzburg Election as a vice-chancellor at University Wuerzburg
Munich Roentgen got the professorship at University Munich
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Historical events during his lifetime

• 1870's
• 1880's
• 1890's
• 1900's
• 1910's

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1870's
18701872 German-French War 18th January
1871 Foundation of the German Reich
1873 Three-Emperor-Agreement (Germany,
Austria, Russia) in Berlin was signed 1878
Otto von Bismarck's law against social
democracy 1879 Alliance between Germany
and Austria
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1880's 1890s
1882 Italy became part of the alliance
between Germany and Austria (till 1914/15)
1881-1889 Installation of Bismarck's
social laws in Germany Health insurance,
accident insurance and pension insurance scheme
25th January 1890 The German sovereign
assembly declined the bill of the government
about the prolongation of the socialist law
for an indefinite period 1st April 1892
Installation of the Central European Time as
standardized time for the entire
Germany 5th December 1894 Emperor Wilhelm
II. opened the German sovereign assembly building
in Berlin
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1900's 1910s
8. April 1904 Entente Cordinale (Alliance
between Great Britain and France to solve a
conflict of interests) 14. Dezember 1911
First person reached the South Pole 1912
Maiden voyage and sinking of the Titanic
1914-1918 First World War 1918
November Revolution in Germany 1919
Foundation of the Weimarer Republic

• 8. April 1904
• Entente Cordinale (Alliance between
• Great Britain and France to solve a conflict
• of interests)
• 14. Dezember 1911
• First person reached the South Pole
• 1912
• Maiden voyage and sinking of the Titanic
• 1914-1918
• First World War
• 1918
• November Revolution in Germany
• 1919
• Foundation of the Weimarer Republic

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Interview with Roentgen
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• References Google WIKIPEDIA ROENTGEN
  BIOGRAPHY PHYSICS FOR KIDS Book MENSCHEN DIE
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• Made by Julia Habelmann
• Sarah Schäfer
• Mira Siedentop