다이아몬드 개량

과학동아 1988년 09호

of heat. This means that electronic devices can be diamondized would in this way be less affected by stray electric fields and would not accumulate heat.Diamond can also be made into semiconductors by the proper addition of traces of boron or phosphorus. Such semiconductors would be resistant to radiation, transparent to ultraviolet light, and its electrons would move about much faster than ...

감마선의 시사

과학동아 1988년 05호

gravitational fields strong enough to cause matter to spiral in tight turns that automatically emit X-rays, but the fields cannot force the matter to spiral so tightly that they will emit gamma rays. Black holes, however, with still greater graviational intensities, can produce gamma rays. Astronomers at the Jet propulsion Laboratory in California, early this year, reported a new way of ...