In transverse waves, the oscillations are at right angles to the direction of travel, while in Iongitudinal waves they are parallel to the direction of travel. All waves have three characteristics in common: amplitude, wavelength, and frequency. Waves can be reflected (bounced off a surface),...
Medical Definition electromagnetic wave noun :one of the waves that are propagated by simultaneous periodic variations of electric and magnetic field intensity and that include radio waves, infrared, visible light, ultraviolet, X-rays, and gamma rays ...
Noun1.alpha wave- the normal brainwave in the electroencephalogram of a person who is awake but relaxed; occurs with a frequency of 8-12 hertz alpha rhythm brain wave,brainwave,cortical potential- (neurophysiology) rapid fluctuations of voltage between parts of the cerebral cortex that are detectab...
X-ray multiple-wave interaction in a paratellurite crystal (TeO2) under modulation of the crystal lattice by low-frequency ultrasonic vibrations is studied. The use of such vibrations enables accurate scanning or tuning of the multiple-wave region of X-ray interaction....
摘要: We retrieve the wavelength dependent wavefront of ultrashort pulses focused with a kinoform diffractive lens using the spatiotemporal characterization technique STARFISH. The convergence/divergence evolution of the wavefronts around the focus is analyzed for each wavelength....
When a high-frequency wave impinges upon a large open-ended waveguide or cavity (here illustrated in plane parallel geometry), the fields coupled into the interior can be analyzed either by tracking multiple-reflected and edge-diffracted rays or by converting the initial field into waveguide or ca...
Crust breaking and the limiting rotational frequency of neutron stars. Preprint at https://arxiv.org/abs/1804.04952 (2018). Haskell, B. & Schwenzer, K. Gravitational waves from isolated neutron stars. Preprint at https://arxiv.org/abs/2104.03137v1 (2021). Saito, T. R. et al. New ...
6 (b) shows the spin-wave wavevector of the first four waveguide modes n=1 to n=4 as a function of the externally applied bias field for a fixed spin-wave frequency of 6GHz. For the calculations, a 2.2μm wide, 20nm thick waveguide made from Ni81Fe19 has been assumed, as has...
(2.6)f=foei(ωt−κx) where the argument of the function was changed to be dimensionless as required by sine, cosine or exponential functions. It is also convenient to use ωt –κx as the argument in mathematical presentation of harmonic waves since it shows the frequency (ω) of osci...
The new antennas, known as "beam wave guide" antennas, can be used more flexibly, allowing the network to operate on several different frequency bands within the same antenna. NASA begins campaign to build improved deep space network antennas If a cover's left on, radio waves are trapped and...