Maybe you have no idea, or have heard something vague about the water in the food wiggling in response to the microwaves. Do you know why microwaves and not some other part of the electromagnetic spectrum? Why the food spins on a platter? How the size of the oven relative to the wavelen...
The electromagnetic energy from the universe and that generated on earth is abundant in the natural environment, which overspreads the spectrum from below 1 Hz up to 1015 Hz within the region of the biosphere [11], [12]. It is reasonable to deduce that Conclusion In this paper, we have...
This electromagnetic wave can be a microwave in the radio frequency (RF) spectrum or an optical light in the near-infrared spectrum. Skin hydration sensors using radiation from these spectra have already been developed, and this section will present the operation of these devices and discuss why ...
The spectrum spans from 840 MHz to 980 MHz, but in this figure, we only show the range from 865 MHz to 870 MHz. The spectra shown in Figure 5 are obtained by applying a fast Fourier transform (FFT) on the jamming signal over a 1.024 ms1.024 ms time window. This 1.024 ms1.024 ms...
Figure 5. XPS spectra of CoFe2O4/SWCNTs composites: (a) full spectrum, (b) Co 2p, (c) Fe 2p, and (d) O 1s. With the above analysis, we believe that the necklace-like CoFe2O4/SWCNTs nanocomposites have been successfully prepared. Next, we compared and analyzed the wave absorption...
The Spearman correlation coefficient was used to find frequency regions of interest within the impedance spectrum. In summary, the existing inter-turn insulation degradation monitoring methods detect degradation of insulation used in low-voltage coils by assessing the change of high-frequency electrical ...