Friedrich Hasenöhrl

Friedrich " Fritz" Hasenöhrl is a Austrian Physicien.

It is born on November 30th 1874 with Vienna. His/her father was lawyer, his mother came from an aristocrat family.

He studies sciences with the Université of Vienna, with as notable professors Joseph Stefan and Ludwig Boltzmann. It is him which transmits the teaching of the latter to Erwin Schrödinger.

In 1904 and 1905, Friedrich Hasenöhrl calculates the Pression of radiation in a closed cavity. In one first article, it obtained an equation which we can rewrite $E= \ frac {8} {3} mc^2$ .

In 1905 in a new article, it corrects and written $E= \ frac {4} {3} mc^2$ . Thus, it indicates that for a system containing an energy E, a Inertie proportional to E must be added to the system.

In 1914 the mathematician Ebenezer Cunningham found the error of Hasenöhrl (he had neglected the influence of the wall) and showed that the step of Hasenöhrl led well to the equation E=mc ². It is interesting to see that one can obtain the relation only by employing the Maxwell's equations (this result is however not astonishing insofar as these equations are most naturally formulated within the framework of the restricted Relativité).

Later, Philipp Lenard presented the equation under the name of principle of Hasenöhrl , to make an Aryan creation of it

Hasenhörl took part in the first Congrès Solvay in 1911.

Hasenöhrl voluntarily engaged in the army Austro-Hungarian during the First World War, and combatit on the face of the the Tyrol. Wounded, it turned over on the face after having been neat. It is finally killed by a grenade on October 7th, 1915.

Random links: