What is the absorption spectrum of iodine?
When the spectrum of light after passing through the iodine vapour is analysed by a spectrometer, it is observed that specific wavelengths are absorbed. Each absorbed wavelength will appear as a dark line in the spectrum corresponding to the difference of different energy states of iodine molecule.
What is the frequency of iodine?
The observed hyperfine transitions of the iodine can be good frequency references at 534 nm and are especially useful for research on the aluminum ion optical clock, because the frequency of the iodine hyperfine transitions is close to the second sub-harmonic frequency of the S01-P13 transition of the aluminum ion at …
Is iodine a fluorescent?
Abstract. Excitation of molecular iodine vapor with a green (543.4 nm) helium−neon laser produces a fluorescence spectrum that is well suited for the upper-level undergraduate physical chemistry laboratory.
What is the reduced mass of iodine?
where µ = 1.05 × 10−25 kg is the reduced mass of the iodine molecule.
What causes Fraunhofer?
Fraunhofer lines, in astronomical spectroscopy, any of the dark (absorption) lines in the spectrum of the Sun or other star, caused by selective absorption of the Sun’s or star’s radiation at specific wavelengths by the various elements existing as gases in its atmosphere.
What is the molar mass of iodine?
126.90447 uIodine / Atomic mass
Is Iodine a crystalline?
Iodine is a nonmetallic, nearly black solid at room temperature and has a glittering crystalline appearance. The molecular lattice contains discrete diatomic molecules, which are also present in the molten and the gaseous states.
What is continuous emission spectrum?
Continuous spectra (also called thermal or blackbody spectra) arise from dense gases or solid objects which radiate heat. They emit radiation over a broad range of wavelengths, thus the spectra appear smooth and continuous.
What is the molar mass of chlorine?
35.453 uChlorine / Atomic mass
What element was discovered using Fraunhofer lines?
helium
Spectroscopic investigations of the Sun’s chromosphere during a solar eclipse in India in 1868 revealed a previously unobserved line, close in wavelength to the D1 and D2 Fraunhofer lines of sodium. The new line was designated D3 and the element it represented helium (= sun).
What is the Ka band?
e The Ka band (pronounced as either “kay-ay band” or “ka band”) is a portion of the microwave part of the electromagnetic spectrum defined as frequencies in the range 26.5–40 gigahertz (GHz), i.e. wavelengths from slightly over one centimeter down to 7.5 millimeters.
What does K a mean in radio waves?
K a band. The band is called K a, short for “K-above” because it is the upper part of the original NATO K band, which was split into three bands because of the presence of the atmospheric water vapor resonance peak at 22.24 GHz, (1.35 cm) which made the center unusable for long range transmission.
What does Ka stand for?
K a band. The Ka band (pronounced as either “kay-ay band” or “ka band”) is a portion of the microwave part of the electromagnetic spectrum defined as frequencies in the range 26.5–40 gigahertz (GHz), i.e. wavelengths from slightly over one centimeter down to 7.5 millimeters. The band is called K a, short for “K-above” because it is…
What is the difference between s-band and Ka-band?
Compared with S-band, Ka-band has data transmission rates that are hundreds of times faster. It’s like the difference between the television antennas perched on houses decades ago that used transmission frequency called VHF or Very High Frequency and the satellite antenna dishes used today that use a much higher frequency, 50 times higher than VHF.