One reason JUUL and vape pens are so popular among teens currently might be that they can be used indoors without attracting unwanted attention or creating a stench, Morean says. On Twitter, teens post about their usage in school.
What is a star's emission spectrum? It is the same as the HR diagram and gives the same information. It is the fingerprint of all of the colors of light emitted by a star. It is a graph of all the pollution given off by a star. It is a graph of the starâs solar flares.
Absorption and Emission Lines. Photons with 10.2 eV of energy are absorbed, leaving an absorption line. Now we can start making the connection between the peaks and valleys we see in a star's spectrum and the energy levels of the star's atoms. Let's say that I shine a light with all the colors of the spectrum through a cloud of hydrogen gas.