By Austin Richards
Austin Richards takes readers on a visible travel of the electromagnetic spectrum past the variety of human sight, utilizing imaging expertise because the ability to 'see' invisible gentle. Dozens of colourful photographs and transparent, concise descriptions make this an fascinating, obtainable technical e-book. Richards explains the sunshine spectrum, together with obvious mild, and describes the complicated imaging applied sciences that let people to synthesize our personal model of 'alien' imaginative and prescient at assorted wavelengths, with purposes starting from fireplace scuffling with and legislations enforcement to botany and medicine.
- checklist of Figures
- Infrared and Ultraviolet: the sides of the Rainbow
- Thermal Imaging: all of us Glow in the dead of night
- Microwave and Millimeter-Wave Imaging: Piercing the Veil
- X Rays and Gamma Rays: Crookes Tubes and Nuclear mild
- Acoustic Imaging: Seeing with Sound
- Sweeping in the course of the Spectrum: Comparative Imagery
- Bibliography and web assets
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Extra info for Alien Vision: Exploring the Electromagnetic Spectrum with Imaging Technology
For example, the Sphinx’s neck and breast are cool, as they are well shaded from the Sun by its head. Thermal imaging technology has advanced to the point where even very subtle surface temperature differences are quite easy to detect. Recall the example of the stove burner in the last chapter. It emitted SWIR light even when it appeared black to the eye. Turn off the burner, wait long enough, and the burner will cool to a temperature just a little above room temperature. It is then indistinguishable from the other burner if imaged in the SWIR waveband.
Here are some examples of industrial applications for thermal imaging technology. 15 is a MWIR image of a car’s windshield with the defroster on. 15 Thermal image of windshield defroster. com) low-temperature environmental chamber as part of a series of tests performed by the manufacturer. The pseudocolor bar on the right indicates the temperature from hottest (white) to coldest (black). These data can be used to characterize defroster performance. Thermal imaging is applied to a multitude of automotive systems evaluations, since many parts of an automobile operate at temperatures above or below the ambient temperature.
Near-ultraviolet imaging is also quite useful for forensic analysis. For example, near-ultraviolet imaging has proven to be quite useful in locating fingerprints. Fingerprint analysis has long been a vital tool to law enforcement, since fingerprints are often left behind at crime scenes and, like DNA, are unique to an individual. But they are often very difficult to see with the unaided eye, even with a magnifying glass, as finger oils are transparent to visible light. However, these same finger oils are very reflective to near-UV light, and this property can be exploited to detect fingerprints on nonporous surfaces.
Alien Vision: Exploring the Electromagnetic Spectrum with Imaging Technology by Austin Richards