Note that the app is just listed as WeatherBug in the iOS App Store. Pay 99 cents a month or $9.99 a year, and you can remove ads from the app a free 24-hour trial lets you take the paid version out for a spin. Since it pulls data from weather services, satellites and tracking stations, WeatherBug can provide hyperlocal real-time conditions with current, hourly and 10-day forecasts. The app also features air quality info and pollen count data on top of the usual array of weather information. Other features include Spark lightning alerts which use GPS data to alert you to how close lightning strikes are hitting. The free download not only offers Doppler radar for North America, but can provide hurricane forecasts with the help of an improved hurricane tracker. If there's a developing weather situation you need to track, WeatherBug can help you out. The $14.99/year Tier Two subscription brings 50-frame loops, SPC outlooks, special weather statements, hail size and even more advanced features.ĭownload RadarScope: Android, iOS 6. At Tier One (?$9.99/year), you get real-time animated lighting data and up to 30 frames of radar data, among other features. In addition to the $9.99 download, RadarScope offers subscription tiers that offer more data. That gives RadarScope a lot more detail than your typical weather apps. RadarScope's makers say the imagery in this app uses native radar data rendered in its original radial format. The app also helps you track the paths of storms using data from the U.S. With RadarScope installed, you can trck everything from tornados and severe thunderstorms to flash floods and marine warnings. September 2001.Serious weather watchers will want to turn to RadarScope for detailed satellite views that include NEXRAD Level 3 and Super-Resolution radar data. “ Rubidium 87 D Line Data (PDF).” Los Alamos Theoretical Division (T-8). “ A Narrow‐band Tunable Diode Laser System with Grating Feedback, and a Saturated Absorption Spectrometer for Cs and Rb.” American Journal of Physics 60, no. ![]() “ Using Diode Lasers for Atomic Physics.” The Review of Scientific Instruments 62, no. “ Hyperfine Splittings in 4p5 5p Configuration of (83)Kr using Saturated Absorption Laser Spectroscopy.” The Physical Review A 39, no. “ The Diode Laser in Atomic Physics.” Contemporary Physics 26, no. “ Velocity Selective Optical Pumping Spectroscopy of D 1 Lines in Alkali Atoms.” Journal of the Physical Society of Japan 53 (1984): 3351-3361.Ĭamparo, J. “ Theoretical Analysis of Rb and Cs D 2 Lines in Doppler-Free Spectroscopic Techniques with Optical Pumping: Part II.” Journal of the Physical Society of Japan 24, no. “ Theoretical Analysis of Rb and Cs D 2 Lines in Saturation Spectroscopy with Optical Pumping: Part I.” Journal of the Physical Society of Japan 23, no. “Velocity Selective Optical Pumping.” J Physique 43 (1982): 263-277. “ Saturation Spectroscopy with Laser Optical Pumping in Atomic Barium.” The Physical Review 21A, no. Oxford: Oxford University Press, 1983, pp. “Hyperfine Structure and Isotope Shift.” Chapter 9 in Elementary Atomic Structure. “Saturation Spectroscopy.” Chapter 4 in Topics in Applied Physics, Edited by K. “ Laser Spectroscopy (PDF).” Scientific American 229 (Dec. Lab Guideĭoppler-Free Laser Spectroscopy Lab Guide (PDF) Referencesįeld, M. The primary experimental objective will be to use this technique to measure the hyperfine splittings in the S 1/2 and P 1/2 it about lasers in general and diode lasers in particular. In this experiment you will make use of an elegant technique known as Doppler-free saturated absorption spectroscopy that circumvents the problem of Doppler broadening. In either case, physically important structures in such spectra are often obscured by the Doppler broadening of spectral lines that comes from the thermal motion of atoms in the matter. Alternatively, if one has available a tunable monochromatic source (such as certain lasers), a spectrum can be measured one wavelength at a time by measuring light intensity (fluorescence or transmission) as a function of the wavelength of the tunable source. ![]() Traditionally, optical spectroscopy had been performed by dispersing the light emitted by excited matter, or by dispersing the light transmitted by an absorber. Experiments Doppler-Free Laser Spectroscopy Description
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