Experimental observation is reported of conversion in a human retina of infrared laser radiation (with a wavelength of 1.06 渭m) into the visible upon scattering by a solid target. The wavelength of this visible radiation, as estimated by several independent observers, is around 0.557 渭m. ...
Frequency, the number of waves that pass a fixed point in unit time; also, the number of cycles undergone during one unit of time by a body in periodic motion. A body in periodic motion is said to have undergone one cycle after passing through a series o
Radio frequency (RF) is a measurement representing the oscillation rate of electromagnetic radiation spectrum, or electromagnetic radio waves, from frequencies ranging from 300 gigahertz (GHz) to as low as 9 kilohertz (kHz). With the use of antennas and transmitters, an RF field can be used for...
A tunable color center laser has been used as the infrared radiation source for infrared-radio-frequency double resonance spectroscopy. The A 1– A 2 splitting ( J, K = 1, = 1 and J, K = 2, = 1) in the ν 4 vibrational state of CH 3F has been studied. This technique has also...
Infrared thermography in experimental dosimetry of radio frequency and millimeter wavelength radiation exposure. In: Klauenberg BJ, Miklavcic D, editors. Radio Frequency Radiation Dosimetry. Kluwer Academic Publishers; Norwell, MA: 2000. pp. 199–206....
Higher energy phonon dispersion curves, along with values for the sound velocities and frequencies of infrared active modes have been predicted, and they are in accord with available experimental data (Sim et al., 1994). Further discussions of the angular dispersion of the phonon frequencies and ...
Left-handed polarization of the microwave field at the cross centre, when the phase difference between the two pump signals was 90°. Source data Source Data Fig. 2 Measured transmission, coupling strength and calculation results at different polarizations. Source Data Fig. 4 Measured radiation spe...
The vibrational frequency is considered to be equal to the frequency of absorbed radiation (or frequency difference in the case of Raman) and is proportional to the energy difference, but it is customary to define its value not in hertz but in a frequency-dependent unit, the wavenumber, cm...
H. Detection of Optical and Infrared Radiation (Springer, 1978). Download references Acknowledgements We acknowledge J. Ellis, T. Fortier, K. Cossel, W. Swann, B. Stuhl and B. Washburn for discussions. We acknowledge funding from the National Institute of Standards and Technology. Author ...
These sensors were inserted in different positions of dried material as shown in Fig. 1 to measure the temperature. Moreover, the digital balance was used to determine the sample weight manually before and after each drying cycle. An infrared thermal imager was used to record the entire surface...