The Beauty of Discrete Spectrum: A Unique Light Show

What type of spectrum does a low-pressure gas discharge tube emit?

A) a continuous spectrum

B) absorption spectrum

C) beta spectrum

D) discrete spectrum

Answer:

A low-pressure gas discharge tube emits a discrete spectrum of light.

A discrete spectrum consists of distinct, separated lines of specific wavelengths, corresponding to the energy levels within the atoms of the gas in the tube. This occurs when electrons in the gas atoms absorb energy and jump to higher energy levels, then return to their original energy levels, releasing light in the process. This light emission produces the discrete spectrum, which is unique to each element present in the gas. The emitted light can be analyzed to determine the composition of the gas, which is a useful technique in fields like chemistry and astronomy.

In contrast, a continuous spectrum contains all wavelengths of light, while a beta spectrum refers to the distribution of energies in beta particle emissions, which are unrelated to low-pressure gas discharge tubes.

Discover the mesmerizing world of discrete spectrum and how it unveils the secrets of the elements around us! Embrace the beauty of science and the magic of light in this unique display of atomic phenomena.