Radiations and wave motions : Seeing without visible light—x-rays—cold light—dark heat—radiosdoi:10.1016/S0016-0032(26)90728-XRobert W. WoodElsevier LtdJournal of the Franklin Institute
In the electromagnetic spectrum, the light rays are classified on the basis of their wavelength and frequency. Different types of lights rays in an electromagnetic spectrum are: X-rays Electromagnetic rays Gamma rays Infrared rays Ultrav...
The visible region is a small region of the spectrum and the visible light differ from the other type of radiation in the frequency of energy of its photons. The absorption of light in the UV-Vis wavelength (between ∼180–800 nm) occurs frequently from many molecules such as a wide ...
Here, the first equation in the above denotes the wave nature of the light whereas the second equation in the above specifies the exact nature of the light. Example Problem The wavelength of visible light can be calculated like the following. The frequency value is f = 6.24×1014Hz. We kno...
Besides the illumination parameters (wavelength, intensity, frequency and duration, dose), the cultivation parameters (e. g. serum concentration, photo-sensitive/stable medium components, cell confluency, medium refreshment, oxygen concentration) have a significant influence on the light-induced effects ...
3c). In addition, as depicted in Fig. 3d, the output radio-frequency (RF) spectrum, which was recorded with a 10 Hz resolution bandwidth, has a fundamental frequency of 3.8713 MHz and a high SNR of ∼66.9 dB. The inset of Fig. 3d shows no spectral modulation of the 100 ...
Here we show visible-frequency silicon metasurfaces formed by three kinds of nanoblocks multiplexed in a subwavelength unit to constitute a metamolecule, which are capable of wavefront manipulation for red, green, and blue light simultaneously. Full phase control is achieved for each wavelength by ...
scence and visible high-frequency short wave ultraviolet light, by irradiating first light rays on a luminescent substance of which electron energy level is easy to be excited and generating from the luminescent substance second light rays having a color different from that of the first light rays...
(Fig.3b). As the most direct evidence of ferroelectricity, the well-shaped rectangularP-Ehysteresis loops were recorded at 298 K using the Sawyer-Tower circuit method. At the frequency of 25 Hz, theP-Eloop affords the saturatedPsvalue of 5.0 μC/cm2and the coercive electric field (Ec...
photodetector (BPD, Thorlabs PDB450A). The relation between the detector’s output power spectral density,\({S}_{{{\rm{out}}}\left(\nu \right)\)in (V2Hz−1) and the laser’s frequency noise,\({S}_{{{\rm{f}}}\left(\nu \right)\)in (Hz2Hz−1) is given by: $${S}_...