منابع مشابه
on the effect of linear & non-linear texts on students comprehension and recalling
چکیده ندارد.
15 صفحه اولReversible polarization control of single photon emission.
We present reversible and a-priori control of the polarization of a photon emitted by a single molecule by introducing a nanoscale metal object in its near field. It is experimentally shown that, with the metal close to the emitter, the polarization ratio of the emission can be varied by a factor of 2. The tunability of polarization decays, when the metal is displaced by typically 30 nm. Calcul...
متن کاملUltraviolet Interstellar Linear Polarization
Astro-2 has revealed a broad weak spectral feature in the ultraviolet interstellar linear polarization for two lines of sight, connrming the original detection toward HD 197770 and adding HD 147933-4. These are the only two polarization features found in some 30 lines of sight now observed. Both features are centered close to 2175 A, the position of the ubiquitous ultraviolet extinction bump. T...
متن کاملA transition from linear to circular polarization in pulsar radio emission
At present three pulsars are known which clearly show a strongly increasing degree of circular polarization with frequency. As this is accompanied by a smooth decrease of linear polarization, we investigate, if this observation can be explained through a propagation mode transition from linear to circular polarization. Using a previously published model we find that the rate of change of the po...
متن کاملPhotoelectric Emission Measurements on Apollo 17 Lunar Dust Grains:
Introduction: The deleterious effects of the ubiquitous presence of small micron/sub-micron size dust grains in the lunar surface environment are recognized to be one of the major issues that must be addressed in planning the forthcoming missions for robotic and human exploration of the Moon. On theoretical considerations as well as observational evidence, it has been well accepted since the Ap...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Research of the National Bureau of Standards, Section D: Radio Science
سال: 1965
ISSN: 0502-2568
DOI: 10.6028/jres.069d.183