منابع مشابه
Hα-line impact polarisation by electron beams in solar flares
The Hα-line intensity, linear and circular impact polarisation were calculated during the impulsive phase of flares using the density matrix approach. Depolarising effects of diffusive radiation and collisions with thermal electrons are considered for a 3 levels Hydrogen model atom with Zeeman splitting in weak and intermediate magnetic fields. Electron beam energy and angular distributions in ...
متن کاملPolarisation and Alignment Studies in Electron Scattering From Rubidium
Measurements have been made of the A2 spin asymmetry in the scattering of polarised electrons from rubidium atoms. Results have been taken at an incident energy of 15, 20, 30, 50 and 80eV for elastic scattering, and at 15, 20, 30 and 50eV for 5S to 5P excitation where the fine structure has not been resolved. The measurements covered the angular range 30° to 110°. Results were taken using a cro...
متن کاملForming microbial anodes under delayed polarisation modifies the electron transfer network and decreases the polarisation time required.
Microbial anodes were formed from compost leachate on carbon cloth electrodes. The biofilms formed at the surface of electrodes kept at open circuit contained microorganisms that switched their metabolism towards electrode respiration in response to a few minutes of polarisation. When polarisation at -0.2 V/SCE (+0.04 V/SHE) was applied to a pre-established biofilm formed at open circuit (delay...
متن کاملPolarisation Signals
Humans are fascinated by the colour vision, colour signals and ‘dress codes’ of other animals as we can see colour. This property of light may be useful for increasing the contrast of objects during foraging, defence, camouflage and sexual communication. New research, largely from the last decade, now suggests that polarisation is a quality of light also used in signalling and may contain infor...
متن کاملPolarisation vision
adhesion proteins implicated in integrin activation, including integrin-linked kinase and the filamin-binding protein, migfilin (Figure 1). However, whether these interactions are important for activation or for kindlin-mediated integrin signaling, focal adhesion formation, and cell spreading is unclear and elucidation of the mechanisms of kindlin function will likely require detailed knowledge...
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ژورنال
عنوان ژورنال: Nature
سال: 1931
ISSN: 0028-0836,1476-4687
DOI: 10.1038/127891a0