X-rays as art

X-rays and technology as metaphor.

man imagination. It is possible to trace developments in the use of x-rays in medicine over the century or so since their discovery by Wilhelm Conrad Röntgen. It is equally possible to recognize that radiography and other technologies have provided a mirror for the society in which they have been used. In other words, although technology changes society, society, in its response to technology, ...

Subject headings: galaxies: general—galaxies: spiral—X-rays: general—X-rays: galaxies—X-rays: ISM

We present results from the analysis of deep ROSAT HRI and PSPC observations of the spiral galaxy M81. The inferred total (0.5–2 keV band) luminosity of M81 is ∼ 3×10 ergs s, excluding the contribution from identified interlopers found within the D25 ellipse. The nucleus of the galaxy alone accounts for about 65% of this luminosity. The rest is due to 26 other X-ray sources (contributing ∼ 10%)...

Transition radiation as a source of quasi-monochromatic X-rays

Transition radiation (TR) from ultrarelativistic particles is considered. It is shown that performing collimation of the TR from the periodic N-foil stack (parameters of which are selected in a appropriate manner) one obtains the spectrum of the TR which has a form of a peak position of which ω1 depends on the plasma frequency and the thickness of the radiator foils. The height and width of the...

Remembering x-rays.

On the evening of 8 November 1895, ous potential applicability to medical diWilhelm Conrad Rontgen immediately agnosis (2). recognized a remarkable new phenomOn_.zJJ~nu~ry, at his first and only enon. Fluorescent material lying on a public lecture on the discovery, Rontgen bench some distance from the cathode made an x-ray picture of the hand of Dr. ray tube with which he was experimentAlbert v...

Diffraction of X-rays