Spektroskopi Infra Merah (Infrared Spectroscopy) ~ Agungnug19
Category : infrared
Spektroskopi Infra Red (IR) digunakan untuk menentukan struktur, khususnya senyawa organic dan juga untuk analisis kuantitatif, seperti analisis kuantitatif untuk pencemar udara, misalnya karbon monoksida dalam udara dengan teknik non-dispersive. A picture of Earth in infrared wavelengths shows relative temperatures all over the world. This can be a broadband infrared radiometer with sensitivity for infrared radiation between approximately 4.5 µm and 50 µm. All objects on Earth emit IR radiation, or heat, which might be detected by electronic sensors, reminiscent of these utilized in night time-vision goggles and infrared cameras.
Heat power is commonly transferred within the type of infrared radiation, which is given off from an object because of molecular collisions inside it. Molecules usually have a attribute infrared absorption spectrum, and infrared spectroscopy is a standard approach for figuring out the molecular construction of drugs. CRI is derived by a colourimetric calculation carried out on as much as 14 different colour samples illuminated by the light source in query, compared to the calculation utilizing daylight or an incandescent lamp as reference.
The Bureau also supplies false color infrared images that use the Zehr color enhancement, which was developed by Ray Zehr from the US Nationwide Oceanic and Atmospheric Administration (NOAA). Ultraviolet radiation (UV) and infrared radiation (IR) aren’t visible. Clouds of mud that range from a whole bunch to tens of levels above absolute zero appear as black soot in seen gentle, however glow brightly at infrared wavelengths out to several hundred microns.
Thermal radiation will be emitted from objects at any wavelength, and at very excessive temperatures such radiations are associated with spectra far above the infrared, extending into visible, ultraviolet, and even X-ray areas (e.g. the solar corona ). Thus, the favored association of infrared radiation with thermal radiation is just a coincidence based mostly on typical (comparatively low) temperatures typically discovered close to the floor of planet Earth.
One disadvantage of infrared imagery is that low cloud corresponding to stratus or fog could be a related temperature to the encompassing land or sea surface and doesn’t present up. Nonetheless, using the difference in brightness of the IR4 channel (10.3-11.5 µm) and the near-infrared channel (1.58-1.64 µm), low cloud may be distinguished, producing a fog satellite image.