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Why water can absorb in the IR region but not in the visible region?
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Which region has the longer wavelength-visible light or infrared?
IR
Can infrared radiation be stopped by materials?
Yes, most objects that are opaque to visible light also stop IR. Water also stops IR.
Can be visible or infrared?
I can't think of anything that could be those two and nothing but those two. Electronic structure spectroscopy is generally in the UV/Visible band, but I suppose it could extend down into the near IR. Vibrational spectroscopy (with rotational fine structure) is in the IR, but doesn't make it up into the visible region.
Use of kbr in ir spectroscopy?
KBr is used mostly in IR Spectroscopy techniques because it do not absorbs moisture at room temperature as compared to NaCl. More over it do not give its own peak.
What are the limits of the period of visible light?
Just beyond the limits of visible light are ultraviolet (UV) and infrared (IR) light.
Explain glass cell cannot be used for IR region?
Glass absorb IR.
Which region has the longer wavelength-visible light or infrared?
IR
What does water absorb?
IR Radiation otherwise known as Infrared Radiation or heat energy
Can infrared radiation be stopped by materials?
Yes, most objects that are opaque to visible light also stop IR. Water also stops IR.
Can be visible or infrared?
I can't think of anything that could be those two and nothing but those two. Electronic structure spectroscopy is generally in the UV/Visible band, but I suppose it could extend down into the near IR. Vibrational spectroscopy (with rotational fine structure) is in the IR, but doesn't make it up into the visible region.
What is the shortest region of the electromagnetic spectum?
Visible region is the shortest region in the electromagnetic spectrum. Please see the attached picture. It is the shortest defined region. However if you mean wavelength, the further you go on the UV side, the shorter the wavelength. If you are talking about frequence, frequency and wavelength are inversely proportional, so it would be furthest to the IR side. The question is not about the shorter wavelength or less frequency. It is about the region covered in the whole spectrum. So visible with VIBGYOR having wavelength starting from 350 nm to 750 nm will be the visible region where as other regions such as UV and IR would have a larger range.
Is IR rays visible to eyes?
No.
Why are salt crystal cells used in IR spectroscopy instead of glass or quartz cells?
Glass and quartz cells have high absorbency's of photons in the IR range, these are better for analyses in the UV/Vis region. Salt crystal cells, however, typically absorb very little IR radiation, making them optimal for IR spec.
What is a type of radiation used to analyze colored solutions?
The fact the solution is colored means that it absorbs (or interacts at least) with visible (since you can see it!). Generally such compounds are characterized using visible light, but also ultraviolet (UV) and infrared (IR) which are the two regions of the electromagnetic spectrum adjacent to visible light. This type of analysis is generally called UV/visible spectroscopy (although it frequently also extends into the near IR region).
Which region of ir spectrum is reffered to as fingerprint region?
1700cm
Does Infra red or yellow light have a higher frequency?
No, infrared radiation (IR) does not have a higher frequency than visible light. Visible light is above IR on the electromagnetic spectrum. It (visible light) has higher frequency and shorter wavelengths than IR radiation does.
Use of kbr in ir spectroscopy?
KBr is used mostly in IR Spectroscopy techniques because it do not absorbs moisture at room temperature as compared to NaCl. More over it do not give its own peak.
