Imaging Systems

Alien Vision: Exploring the Electromagnetic Spectrum with by Austin Richards PDF

By Austin Richards

Austin Richards takes readers on a visible travel of the electromagnetic spectrum past the diversity of human sight, utilizing imaging expertise because the potential to 'see' invisible mild. Dozens of colourful photos and transparent, concise descriptions make this an fascinating, obtainable technical ebook. Richards explains the sunshine spectrum, together with obvious gentle, and describes the complex imaging applied sciences that let people to synthesize our personal model of 'alien' imaginative and prescient at varied wavelengths, with purposes starting from hearth battling and legislation enforcement to botany and medicine.

Contents

- checklist of Figures

- Preface

- advent

- Infrared and Ultraviolet: the sides of the Rainbow

- Thermal Imaging: all of us Glow at nighttime

- Microwave and Millimeter-Wave Imaging: Piercing the Veil

- X Rays and Gamma Rays: Crookes Tubes and Nuclear mild

- Acoustic Imaging: Seeing with Sound

- Sweeping during the Spectrum: Comparative Imagery

- Epilogue

- thesaurus

- Bibliography and net assets

- Index

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Additional info for Alien Vision: Exploring the Electromagnetic Spectrum with Imaging Technology

Sample text

20 contains visible and MWIR images of a fingertip taken with a close-up lens. The sweat glands cool the skin through evaporation and thus show up as small cold dark spots, corresponding to a cooler temperature. Thermal imaging is used to study the mechanism of perspiration and the distribution of sweat glands in skin. Biological systems, like industrial machines, have to manage thermal energy in order to function properly. The chemical reactions that govern the functioning of biological systems are quite sensitive to temperature, and most organisms will die if their internal temperature fails to stay within a particular range.

The heating caused by an electrical load is apparent, as indicated by the pseudocolor. In this representation, white is the hottest color, followed by yellow, orange, and red, with purple and black representing the coolest parts of the scene. Note that the black object at the bottom of the image is a metal roof that reflects the cold sky into the camera. The mountains behind the transformers are warm, having been heated all day by the Sun (solar loading). 16 Visible (left) and MWIR (right) images of energized transformers.

Aspx Thermal Imaging: We All Glow in the Dark 45 Thermal Imaging and Biology Seeing the infrared light emitted by objects that are only a little hotter than room temperature is a very useful ability for anything that hunts at night. Human eyes alone cannot see the infrared glow from another person or an animal. But a limited type of “thermal vision” does exist in the animal kingdom. Rattlesnakes, pit vipers, and some other snakes can locate their warm-blooded prey in total darkness by sensing the infrared light the prey emits.

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