Why only certain colors in emission spectrum are visible?

In summary, the emission spectrum of hydrogen is only visible to us in certain colors because the human retina can only detect a certain range of wavelengths of light. This is due to the electronic transition energies of the pigment molecules in our rod and cone cells. Other animals may have a wider range of vision. This is not the fault of the hydrogen atom, but rather a result of evolution.
  • #1
Toleisnon
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Why are only certain colors of the emission spectrum in Hydrogen visible?
 
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  • #2
The human retina can detect only a certain range of wavelengths of light, corresponding to electronic transition energies of the pigment molecules in the rod and cone cells. Some other animals may have a vision that can detect wavelengths outside that range. The main point: it's not the hydrogen atom's fault that we don't see its whole emission spectrum, you have to blame evolution for that.
 
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  • #3
@Toleisnon Have you done any research on this?
 
  • #4
hilbert2 said:
The human retina can detect only a certain range of wavelengths of light, corresponding to electronic transition energies of the pigment molecules in the rod and cone cells. Some other animals may have a vision that can detect wavelengths outside that range. The main point: it's not the hydrogen atom's fault that we don't see its whole emission spectrum, you have to blame evolution for that.
I don't think that is correct. It IS the hydrogen atom's fault ... it doesn't emit a full spectrum, which is what the OP would have found if he had done any research.

https://en.wikipedia.org/wiki/Hydrogen_spectral_series
 
  • #5
Toleisnon said:
Why are only certain colors of the emission spectrum in Hydrogen visible?

It looks like we need clarification on what question you are asking. Are you asking why hydrogen only emits certain frequencies instead of all of them, or are you asking why we only see (with our eyes) certain frequencies among those that hydrogen does emit?
 
  • #6
*Why hydrogen only emits certain frequencies when viewing it under a high school spectroscope instead of all of the frequencies (spectral lines)*
 
  • #7
Toleisnon said:
*Why hydrogen only emits certain frequencies when viewing it under a high school spectroscope instead of all of the frequencies (spectral lines)*
Sounds like you want the answer to both questions that Peter pointed out. I have answered one of them in post #4 and Hilbert answered the other in post #2. What about these answers is not clear to you?
 

Related to Why only certain colors in emission spectrum are visible?

1. Why are only certain colors in the emission spectrum visible to the human eye?

The visible light spectrum is a small portion of the entire electromagnetic spectrum, which includes various types of radiation such as radio waves, microwaves, infrared, ultraviolet, and X-rays. The human eye is only able to detect electromagnetic radiation with wavelengths between approximately 400-700 nanometers, which corresponds to the colors red, orange, yellow, green, blue, indigo, and violet. This is due to the specific structure and sensitivity of the photoreceptor cells in our eyes.

2. How do different elements produce different colors in their emission spectra?

When an element is heated or excited in some way, the electrons in its atoms absorb energy and jump to higher energy levels. As the electrons return to their original energy levels, they emit energy in the form of light. The specific energy levels and transitions of each element are unique, resulting in different colors being emitted. This is known as atomic emission spectra and is used to identify elements in spectroscopy.

3. Can the visible colors in the emission spectrum be altered or controlled?

Yes, the visible colors in an emission spectrum can be altered or controlled by changing the energy input to the element. This can be done by varying the temperature or applying an electric current. Additionally, the type of element and its chemical composition can also affect the colors emitted.

4. Why are some colors in the emission spectrum more intense than others?

The intensity of a color in the emission spectrum is determined by the number of photons (light particles) emitted at that specific wavelength. This is dependent on the energy levels and transitions of the electrons in the element, as well as the temperature and other factors that may affect the emission process.

5. Why are there gaps or missing colors in the visible emission spectrum?

The visible emission spectrum appears as a continuous rainbow of colors, but upon closer examination, there are actually gaps or missing colors. This is because the human eye is not able to detect all the wavelengths of light, and therefore, some colors may not be visible to us. Additionally, some colors may be absorbed or reflected by the medium through which the light is passing, further contributing to the gaps in the spectrum.

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