An open-hole type EM absorber is investigated as a countermeasure for preventing the leakage or interference of EM waves from an office equipped with a microwave or millimeter-wave LAN system. To clarify its design, a theoretical analysi... A Maeda,Y Kotsuka - 《Proceedings of the School of...
When electromagnetic waves (EMWs) are subjected to a periodic structure, where the inhomogeneity scale is much smaller than the wavelength of incident light, they treat the whole composite as a single anisotropic homogenous structure. In other words, the inhomogeneity of the structure is suppressed,...
Propagation of a broadband pulse of EM waves in 0.5-10 THz is studied by using finite difference time-domain (FDTD) approach. The results show that plasmonic modes excited by incident THz radiation are concentrated into 位/180 area localized under the central disc. Electric field ...
We report on focusing of terahertz (THz) plasmons in two-dimensional electron gas (2DEG) at III-N heterostructures and in graphene by using planar circular grating lenses. Propagation of a broadband pulse of EM waves in 0.5-10 THz is studied by using finite difference time-domain (FDTD) app...
Wavelength: In optics, the wavelength is the length or distance between the two adjacent peaks or two adjacent crust. Mathematically wavelength can be calculated by taking the ratio of the velocity of the wave and the frequency of the wave. The standard unit of wavelength is meter. ...
3. Which has a lower frequency, radio waves or green light?4. Which has the shortest wavelength, violet or ultraviolet light?5. Which has lower energy, infrared light or x-rays?Part 2 - Fill in the blanks 6. ___ formed a theory to explain the structure of an atom by revising...
Resultant Frequency and Wavelength of Interfering Sound Waves ##-w1## and ##-w2## are to shift the cosine graph to the right, and ##\frac{2pi}{\lambda}## is to stretch the graph. But I can't seem to draw an appropriate ##y1+y2## graph (quite irregular) and I struggle to fi...
The first is attenuation of the signal amplitude caused by absorption of EM waves in soil materials—clay, sand, salty or freshwater, and organic matter. Mathematically, the attenuation due to absorption is exponential, giving rise to a signal that, when traveling straight down, falls off with ...
of physical processes in celestial sources by observing their emission in the entire EM-spectrum One of the last remaining unexplored regions of the spectrum is at the lowest radio frequencies Radio emission below 15 MHz wavelengths longer than 20 m is inaccessible from the ground due to ...
Science Waves The speed at which a wave propagates down a string is 300 m/s. If the frequency of this wave is...Question: The speed at which a wave propagates down a string is 300 m/s. If the frequency of this w...