Every object with a temperature over the absolute zero point (0 Kelvin = -273,15 °C) emits infrared (IR) radiation. The human eye cannot perceive this, as it is more or less blind at this wavelength. Not the thermal imager. Its central element, the detector, is sensitive to IR radiation. Based on the intensity of the IR radiation, it determines the temperature of the object’s surface, and makes it visible for the human eye with a thermal image. This process is referred to as thermography.
In order to make the IR radiation visible, the detector records it, converts it into an electric signal, and gives each signal a certain colour which is then shown in the display of the thermal imager. In principle, thermal imagers thus translate wavelengths from the infrared spectrum into wavelengths which are visible to the human eye (colours).
– Куниця, Т.Ю. (orcid.org/0000-0002-4084-3219) (2018) Theoretical principles of formation of a responsible civic position of adolescents In: Особистість у просторі виховних інновацій: матеріали Всеукр. наук.-практ. конф. Ін-ту проблем виховання НАПН України за 2018 рік НАІР, м. Івано-Франківськ, Україна, pp. 190-194. ISBN 978-966-2716-99-3
The article deals with approaches to the education of a growing person in the traditions of democracy, responsibility as a quality of the personality of adolescents, theoretical approaches to the definition of the concepts of civic education, civic education and responsible civil position from the point of view of teachers, psychologists.
“The book as a whole should be a gift from every research supervisor to every new graduate student in theoretical astronomy.”—D. W. Sciama, Science
“This is a remarkable book: a symposium proceedings volume that will also function as a graduate-level text. Dedicated to the great theorist S. Chandrasekhar, the book consists of ten well-written chapters that cover the essential tools of theoretical astrophysics. The first half of the volume is concerned with the theory of how stars work (structure, stability, rotation, magnetism, dynamics) and the latter half is mainly a survey of relativistic astrophysics. . . . Read it for a broad-brush view of what theorists are up to now and how they solve problems.”—Journal of the British Astronomical Association