Any hidden object which can be attenuated by the x-ray beam will be detected by the x-rays.
CRT and plasma TVs emit x-rays, which can be hazardous.
X-rays
Infrared Rays are easily detected...
Wilhelm Conrad Röntgen produced and detected x-rays or Röntgen rays in 1895. He received the first Nobel Prize in Physics for this acchievment in 1901.
Roentgen invented nothing in 1895. In 1896, he detected and produced "Roentgen Rays," what are now called X-rays.
blocked by the Earths atmosphere but can be detected by telescopes placed in orbit round the Earth
X-rays are a part of the electromagnetic spectrum, a form of ionizing radiation having high energy, short wavelengths, and extraordinarily high frequencies (30 quadrillion to 30 quintillion Hz). X-rays are divided into two bands, HX (hard x-rays) and SX (soft x-rays). Like all electromagnetic radiation other than visible light, x-rays are detected by their effects, and by using detectors or phosphor screens (e.g. fluoroscopes).
gamma rays, x-rays, ultraviolet rays, visible light, infrared rays, microwaves and radio waves are all part of the electromagnetic spectrum. All these waves are released by different bodies in space. Gamma rays and X-rays can come from Quasars, neutron stars. Radio waves can come from even simple radioactive bodies (very unlikely to be detected).
Black Holes by nature cannot be "seen" because of their gravitational ability to pull in light. Obviously you "see" something when light hits an object and then enters your eye. Black holes can be detected with a combination of electronics and deductive reasoning. Black holes emit x-rays which can be detected. It is when x-rays are detected from space yet no possible visible source is found that a black hole exists.
Yes. Breast implants are easily detected on x-rays.
They can detect radio waves, infrared radiation, ultraviolet radiation, x-rays, and gamma rays.
In the electromagnetic spectrum, gamma rays at 1021 cycles / sec are the highest, higher values have been detected from astronomical sources though.