2015年4月9日 · Two years back my friend told me a simple formula for calculating the number of spectral lines. But, now I'm a bit confused about it number of lines is =$ \\frac{2(n-1)}{2}$ is this right or is the...

2015年12月28日 · In case of single isolated atom if electron makes transition from nth state to the ground state then maximum number of spectral lines observed $ = ( n — 1)$. Is the above statement true? If yes, t...

2021年5月19日 · In particular what are weak (and strong) spectral lines? Also, when astronomers present an image of the sun in say H α α (15000K), does it mean only regions/phenomena with H α α transitions are visible (eg. the chromosphere)?

Change ni n i or nf n f (or both) and you get a different spectral line. In the above problem, nf n f and ni n i can have any integral value from 1 to n n. The number of spectral lines is simply the number of ways in which you can "choose" two distinct integers from 1 …

2020年4月23日 · Why are certain spectral lines more intense than others, that is why certain transitions between levels have greater probabilities of occurrence than others?

2015年6月21日 · Distinct spectral lines (rather than an infinite range of energies and hence white light) are a result of only specific transitions being allowed, which implies a set of distinct and unvarying energy levels. Classical models of the atom before quantum mechanics couldn't explain why there should only be certain electron energy levels.

A spectral line is the electromagnetic radiation emitted when the electron jumps from higher orbital to a lower orbital of an atom. Water mainly consists of two elements namely hydrogen and oxygen, my question is why rainbows don't display specific spectral lines …

2021年11月1日 · I want to plot a dispersion curve for helium of wavelength versus distance of spectral lines from an arbitrary zero point to use it in the future in identifying more complex atomic spectra. Unfortunately, I am not able to identify these lines to assign them corresponding wavelengths from some scientific database.

2023年2月21日 · There are many mechanisms which can contribute to broadening spectral lines. Usually, one way or another, the atoms have a broad range of random velocities which cause doppler shifts of varying amounts, broadening the line. One the more fundamental cases is simple 'thermal broadening', where the velocity is from thermal motion. The hotter the gas is, the …

2020年1月23日 · In other words, spectral lines are like the fingerprints which help to identify different substances. This is used by astronomers to identify the chemical composition of distant stars and planets. The Wikipedia article on spectral lines gives the spectral lines for most of the elements in the periodic table.