When Albert Einstein first presented his theory of the electrodynamics of moving bodies (1905), he began by explaining how his kinematic assumptions led to a certain coordinate transformation, soon to be known as the “Lorentz” transformation. Along the way, the young Einstein affirmed the form-invariance of the equation of a spherical light-wave (or light-sphere covariance, for short) with resp...

“Special relativity killed the classical dream of using the energy-momentumvelocity relations as a means of probing the dynamical origins of [the mass of the electron]. The relations are purely kinematical” (Pais, 1982, 159). This perceptive comment comes from a section on the pre-relativistic notion of electromagnetic mass in ‘Subtle is the Lord . . . ’, Abraham Pais’ highly acclaimed biograph...

“Special relativity killed the classical dream of using the energy-momentumvelocity relations as a means of probing the dynamical origins of [the mass of the electron]. The relations are purely kinematical” (Pais, 1982, 159). This perceptive comment comes from a section on the pre-relativistic notion of electromagnetic mass in ‘Subtle is the Lord . . . ’, Abraham Pais’ highly acclaimed biograph...

Thc intraperitoneal administration or I -aminocyclopentane carboxylic acid, I -aminocyelohexane carhoxylic acid. I-aminocycloheptane carboxylic acid. I-aminocyclooctane carboxylic acid, uxo-2aminohicyclo(2.2. I )heptdne-2-carboxylic acid. enrlo-2-aminobicyclo( 2.21 )heptane-2-carboxylic acid. 2aminohicyclo(2.2.2~octane-2-earboxylic acid and 2-aminobicyclo(3.2. I )octane-2qrboxylic acid to I8-da...

Auf dem Weg zu einer dekarbonisierten Mobilität kann der Wasserstoffmotor vor allem im Nutzfahrzeugsektor und auf Langstrecke einen wertvollen Beitrag leisten. Durch die Verwendung von sauberem Wasserstoff als Brennstoff treten Stickoxide praktisch einzig relevante Schadstoffemissionen auf, durch motorische Maßnahmen gepaart mit Abgasreinigung Abgasstrang minimiert werden können. Dieser Artikel...