This research investigates how methods of learning influenced the emerging wind power
industries in the Netherlands and Denmark. It is found that the manufacturing and …

Huygens: The Man Behind the Principle is the story of the great seventeenth-century Dutch
mathematician and physicist, Christiaan Huygens (1629-1695). As the first complete …

A study is made of the present condensation process of solid material around η Car. We show
that this high luminosity (5 × 10 6 L ⊙ ) star with a mass of 160 M ⊙ is losing mass since …

The temperature differences in the extended infrared source of M 17 cannot be ascribed to
a spatial separation of warm and cool dust. They are interpreted in terms of grains with sizes …

New measurements of the surface brightness of the Merope reflection nebula in 14 positions
at the wavelengths 1550, 1800, 2200, 2500 and 3300 Å are re-ported. These are shown to …

Probable far-infrared (100 micron) emission properties of cold (10-20 K) interstellar particles
are discussed. A quadratic law describing the frequency dependence of the absorption …

The mass flux from a star is adopted to result from a fluctuation of the photosphere, which is
not in complete thermal equilibrium. Because of the large difference between the dynamical …

In this paper a flux-coupling model of photosynthesis is presented. By requiring minimum
entropy production, it is found that the photosynthetic efficiency is essentially given by the …

Quasi-elastic neutron-scattering experiments are performed on liquid Ar in orthobaric states
at 85.7, 103.5 and 115.9 K, from which the mean square atomic displacement is derived for …

The wide-band detection with Josephson junctions is discussed, for which high impedance
point contacts are optimum. We describe the fabrication of contacts of R = 100–1000 ω with I …