Vibrational rotational spectrum in Near Infrared region

Heading: Introduction
The vibrational rotational spectrum is the spectrum that is observed when a molecule undergoes both rotational and vibrational transitions. This spectrum can be observed in various regions of the electromagnetic spectrum, such as the microwave region, the near-infrared region, and the far-infrared region.

Heading: Vibrational rotational spectrum
The vibrational rotational spectrum is a combination of the vibrational spectrum and the rotational spectrum of a molecule. The vibrational spectrum is the spectrum that is observed when a molecule undergoes a change in vibrational energy level. The rotational spectrum is the spectrum that is observed when a molecule undergoes a change in rotational energy level.

Heading: Near-infrared region
The near-infrared region is the region of the electromagnetic spectrum that lies between the visible region and the mid-infrared region. The near-infrared region has wavelengths ranging from 700 nm to 2500 nm. In this region, the vibrational rotational spectrum is observed for molecules that have low rotational constants and high vibrational constants.

Heading: Explanation
The vibrational rotational spectrum is observed in the near-infrared region because the energy difference between the rotational and vibrational energy levels of a molecule is in the range of the near-infrared region. The near-infrared region is also suitable for observing the vibrational rotational spectrum because it is not absorbed by most materials and can penetrate through biological tissues.

Heading: Conclusion
In conclusion, the vibrational rotational spectrum is observed in the near-infrared region of the electromagnetic spectrum. This region is suitable for observing the vibrational rotational spectrum of molecules that have low rotational constants and high vibrational constants. The near-infrared region is also suitable for observing the vibrational rotational spectrum because it can penetrate through biological tissues.