In physics, terahertz radiation – also known as submillimeter radiation, terahertz waves, tremendously high frequency,T-rays, T-waves, T-light, T-lux or THz – consists of electromagnetic waves within the ITU-designated band of frequencies from 0.3 to 3 terahertz (THz; 1 THz = 1012 Hz). Wavelengths of radiation in the terahertz band correspondingly range from 1 mm to 0.1 mm (or 100 μm). Because terahertz radiation begins at a wavelength of one millimeter and proceeds into shorter wavelengths, it is sometimes known as the submillimeter band, and its radiation as submillimeter waves, especially in astronomy.
Terahertz radiation occupies a middle ground between microwaves and infrared light waves known as the terahertz gap, where technology for its generation and manipulation is in its infancy. It represents the region in the electromagnetic spectrum where the frequency of electromagnetic radiation becomes too high to be measured digitally via electronic counters, so must be measured by proxy using the properties of wavelength and energy. Similarly, the generation and modulation of coherent electromagnetic signals in this frequency range ceases to be possible by the conventional electronic devices used to generate radio waves and microwaves, requiring the development of new devices and techniques.
T-Ray is a villain in the Marvel Comics Universe. The character, created by Joe Kelly and Ed McGuiness, first appeared in Deadpool #1 in January, 1997. Within the context of the stories, T-Ray is an opponent of Deadpool.
Per T-Ray's own account he was born "Wade Wilson." He met his future wife Mercedes while they were attending college in Calgary, Canada and they married after graduating with teaching degrees. While vacationing in Maine, they discovered a wounded youth and they took him into their cabin to recuperate. According to T-Ray, the young man's name was "Jack," a mercenary on the run from his employers for botching his assignment. In an attempt to remain hidden, Jack planned to kill Wilson and assume his identity, leaving his employers to believe that Wilson's dead corpse was his own. However, while attacking Wilson, Jack was accosted by Mercedes, and he inadvertently took her life. Jack fled, although the surviving Wilson remained at the cabin until Jack's employers arrived. Wilson agreed to enter their service and he was trained to kill Jack. Due to his craving for additional power he killed Jack's employers, and became an accomplished sorcerer in Japan, transforming into a more muscular albino form and allegedly trading his soul to entities called the "dark Masters"; he realized that he was becoming as evil as his wife's killer, but refused to care.
T-ray may refer to: