why do we see a discreet line spectrum from hydrogen gas?
Each line in the hydrogen emission spectrum corresponds to photons with different energies. If they were all the same then they would emit the same type of light. A low energy state corresponds to one in which the value of the energy is larger, the value of n smaller and the stability of the electron high. A high energy state corresponds to one in which the value of the energy of attraction, the value of n is larger the stability of the electron is low. Having said that, when you look at the hydrogen spectrum from a cathode-anode experiment with a spectrometer, you can see that ionization has occurred because of the discrete lines. But when you look at a light bulb it is continous. Why? Could it possibly have something to do with the energy states of the electron moving from one energy orbital to another?why do we see a discreet line spectrum from hydrogen gas?
would the answer be something that mikeplore said?a light bulb has electrons too... why wouldnt the electrons in the light bulb move from one energy orbital to another?
if so, then this returns to my previous posts:In a gas, the atoms are generally independent. The electron's energy levels are those that are characteristic of a particular atom here and another particular atom there, so you tend to get a discrete spectrum. But solids and liquids, and even a very dense gas such as in a star, have atoms so close together that they modify each other's energy levels, and fill in the gaps, so you get a continuous spectrum. Hold some sodium chloride crystals in a flame and you will see the famous "sodium yellow" color, but it's coming from the vapor that is boiling off.
still confused.what about liquid nitrogen? nitrogen is a pure element, but you're saying since it is a liquid, it will emit a continuous spectrum? so you're saying if the nitrogen gas is very close together, it will modify each other's energy energy levels so to make a continuous spectrum?
how would someone excite gas? can you excite gas the same way you excite solids and liquids? by heating them up?
i read somewhere that you can put the gas in an electric field? why would this excite the gas?