1. Zitate
  2. Autoren
  3. John Henry Poynting

John Henry Poynting Zitate

John Henry Poynting war ein englischer Physiker.

✵ 9. September 1852 – 30. März 1914
John Henry Poynting Foto
John Henry Poynting: 2 Zitate0 Gefällt mir

John Henry Poynting: Zitate auf Englisch

“When we see the havoc wrought on a sea-wall by a storm, it is easy to believe that ocean waves exert a pressure against the shore on which they beat. But it is not easy to think that the tiny ripples of light also press against every body on which they fall, to think that when a lamp is lighted waves of pressure are sent out from it—pressing against the source from which they start, pressing against every surface which they illuminate. It is a very minute pressure, far too small, even when it is strongest, to be felt by our bodies, and only to be detected by exceeding sensitive apparatus.”

Help us translate this quote

John Henry Poynting

[The pressure of light, 1910, London, Society for Promoting Christian Knowledge, 9, https://babel.hathitrust.org/cgi/pt?id=uc2.ark:/13960/t87h1gt3q;view=1up;seq=13]

“A very simple experiment shows that a black surface is a better radiator, or pours out more energy when hot, than a surface which does not absorb fully, but reflects much of the radiation which falls upon it. If a platinum foil with some black marks on it be heated to redness, the marks, black when cold, are much brighter than the surrounding metal when hot; they are, in fact, pouring out much more visible radiation than the metal.”

Help us translate this quote

John Henry Poynting

[Smithsonian Report for 1904, 185–193, Radiation in the solar system, https://books.google.com/books?id=2G1xpr2w4PUC&pg=PA186] (p. 185)

Ähnliche Autoren

Wilhelm Conrad Röntgen Foto
Wilhelm Conrad Röntgen5
deutscher Physiker None
George Eliot Foto
George Eliot10
englische Schriftstellerin None
Percy Bysshe Shelley Foto
Percy Bysshe Shelley4
englischer Schriftsteller None
Samuel Taylor Coleridge Foto
Samuel Taylor Coleridge3
englischer Dichter, Kritiker und Philosoph None
Charles Dickens Foto
Charles Dickens11
englischer Schriftsteller None
William Blake Foto
William Blake27
englischer Maler und Dichter None
Thomas Hardy Foto
Thomas Hardy9
englischer Schriftsteller None
John Ruskin Foto
John Ruskin4
englischer Schriftsteller, Maler, Kunsthistoriker und Sozia… None
John Stuart Mill Foto
John Stuart Mill15
ehemaliger englischer Philosoph und Ökonom und einer der ei… None
Louis Pasteur Foto
Louis Pasteur2
französischer Chemiker und Mikrobiologe None