452 research outputs found
Evolution of the knowledge of electricity and electrotherapeutics with special reference to X-rays & cancer. Part 1. Ancient Greeks to Luigi Galvani
Investigation of Lunar Surface Chemical Contamination by LEM Descent Engine and Associated Equipment
Lunar surface and atmospheric contamination study caused by LEM rocket exhaust and inorganic, organic, and microbiological contaminant
Rozwój wiedzy o elektryczności i elektroterapii ze szczególnym uwzględnieniem promieni X i leczenia raka Część III Od Sir Williama Crookesa do elektroterapeutów XX wieku
Evolution of the knowledge of electricity and electrotherapeutics with special reference to X-rays & cancer Part 2. Alessandro Volta to James Clerk Maxwell
Mode coupling control in a resonant device: application to solid-state ring lasers
A theoretical and experimental investigation of the effects of mode coupling
in a resonant macro- scopic quantum device is achieved in the case of a ring
laser. In particular, we show both analytically and experimentally that such a
device can be used as a rotation sensor provided the effects of mode coupling
are controlled, for example through the use of an additional coupling. A
possible general- ization of this example to the case of another resonant
macroscopic quantum device is discussed
Rozwój wiedzy o elektryczności i elektroterapii ze szczególnym uwzględnieniem promieni X i leczenia raka. Część I. Od starożytnych Greków do Luigi Galvaniego
Investigation of lunar surface chemical contamination by LEM descent engine and associated equipment Final report
Lunar surface contamination from LEM rocket exhaust - methods of minimizing sample contaminatio
Renormalization and Hyperscaling for Self-Avoiding Manifold Models
The renormalizability of the self-avoiding manifold (SAM) Edwards model is
established. We use a new short distance multilocal operator product expansion
(MOPE), which extends methods of local field theories to a large class of
models with non-local singular interactions. This validates the direct
renormalization method introduced before, as well as scaling laws. A new
general hyperscaling relation for the configuration exponent gamma is derived.
Manifolds at the Theta-point, and long range Coulomb interactions are briefly
discussed.Comment: 10 pages + 1 figure, TeX + harvmac & epsf (uuencoded file),
SPhT/93-07
Scaling of Selfavoiding Tethered Membranes: 2-Loop Renormalization Group Results
The scaling properties of selfavoiding polymerized membranes are studied
using renormalization group methods. The scaling exponent \nu is calculated for
the first time at two loop order. \nu is found to agree with the Gaussian
variational estimate for large space dimension d and to be close to the Flory
estimate for d=3.Comment: 4 pages, RevTeX + 20 .eps file
Experimental study of the delayed threshold phenomenon in a semiconductor laser
An experimental study of the delayed threshold phenomenon in a Vertical
Extended Cavity Semiconductor Emitting Laser is carried out. Under modulation
of the pump power, the laser intensity exhibits a hysteresis behavior in the
vicinity of the threshold. The temporal width of this hysteresis is measured as
a function of the modulation frequency, and is proved to follow the predicted
scaling law. A model based on the rate equations is derived and used to analyze
the experimental observations. A frequency variation of the laser around the
delayed threshold and induced by the phase-amplitude coupling is predicted and
estimated
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