Examining the notion of wavefunction collapse (WFC) in quantum measurements , which came again to be in question in the recent debate on the quantum Zeno effect, we remark that WFC is realized only through decoherence among branch waves by detection, after a spectral decomposition process from an initial object wavefunction to a superposition of branch waves corresponding to relevant measuremen...

A general model for a rotating homogenous j-lexible robot link is developed. The model describes twodimensional transverse vibrations induced by the actuator due to misalignment of the actuator axis of rotation relative to the link symmetry axis and due to translational acceleration of the link. The model is validated experimentally.

The coherent interband dynamics of optically excited two-dimensional lateral surface superlattices driven by an in-plane static electric field has been investigated. The linear absorption, the spectrally-resolved pump-probe fourwave mixing signals and spatial coherent wavepacket evolution in the timedomain are obtained. When the rational condition Ex/Ey = p/q, with p, q prime to each other, is ...

The interlaminar-toughened CFRP composite, T800H/3900-2, has interlaminar resin layers, whose thickness is about 20 mm. The interlaminar layer was evaluated quantitatively using an ultrasonic micro-spectrometer (UMSM) for the determination of the elastic constants, which is quite difficult by other techniques. At first, the composite was ground to remove the outermost CFRP layer, and the interl...

Magnetically driven non-stationary acceleration of jets in active galactic nuclei results in the leading parts of the flow being accelerated to much higher Lorentz factors than in the case of steady-state acceleration with the same parameters. The higher Doppler-boosted parts of the flow may dominate the high-energy emission of blazar jets. We suggest that highly variable GeV and TeV emission i...

I present a review of observational efforts to study known extrasolar planets by methods that are complementary to the radial velocity technique. I describe the current state of attempts to detect and characterize such planets by astrometry, by reflected light, by thermal emission, by transit photometry, by atmospheric transmission spectroscopy, by planet-induced chromospheric activity, and by ...

How is the Vehicle's Speed Detected by the Radar? Radar makes use of electromagnetic waves to detect objects and give info (speed, distance, etc) about them. It makes use of Doppler Effect to determine the vehicle's speed. They calculate and scale the variation of frequency between the received and sent radio waves (echo). The frequency will be lower if the object is moving away and is higher i...

We calculate the two-step contribution to (p, p′) and (p, n) reactions at intermediate energy. We describe the motion of the incident nucleon with a plane wave and compare the contribution from two-step processes with that from one-step processes. To describe the two-step processes, we extend the response functions to nondiagonal forms with respect to the momentum transfer q. We performed a num...

We present seven nights’ blue (4300–5000Å) spectroscopy of the novalike variable star, V3885 Sgr. The line spectrum shows a typical combination of broad absorption and emission in H γ and Hβ and He i, which is associated with the accretion disk. We also observe anti-phased narrow emission, which we attribute to irradiation of the secondary star. The He iiλ 4686 and N iii–C iii–C iv emission lin...

The aim of this work is to model the evolution of the modal distribution of the electromagnetic field as it propagates along a randomly deformed multimode optical waveguide. When the number of guided modes becomes large we can regard the discrete set of modes as a quasi continuum. In some cases, nearest neighbor coupling predominates over other power transfer mechanisms and the coupling process...