HACing out a dusty light source.HACing out a dusty light source
Studying the spectra of a tough compound that coats some electrodes and the fuel pellets used in fusion experiments Experiments directed toward developing fusion power are invariably done with dedicated machines which can be classified according to the principles they use to confine the plasma fuel and keep it hot.
The major division is between magnetic confinement and inertial confinement. has helped solve a long-standing astronomical mystery -- the emission of red light from interstellar in·ter·stel·lar
Between or among the stars: interstellar gases.
between or among stars
Adj. 1. dust clouds.
The curious interstellar emissions appear to arise from a solid form of a diamond-like compound known as hydrogenated amorphous carbon (HAC HAC Housing Assistance Council
HAC Hill-Start Assist Control (automobiles)
HAC Hearing Aid Compatible
HAC Havre Athletic Club (Le Havre, France)
HAc Acetic Acid
HAC Honourable Artillery Company ), report David A. Williams of the University of Manchester The University of Manchester is a university located in Manchester, England. With over 40,000 students studying 500 academic programmes, more than 10,000 staff and an annual income of nearly £600 million it is the largest single-site University in the United Kingdom and receives in England and his colleagues at York University in Ontario. Their laboratory experiments show that HAC absorbs short-wavelength light and reradiates it at red and infrared wavelengths closely matching the spectra emitted by interstellar dust.
The researchers point out that differing properties of the two known forms of HAC may explain observed variations in absorption and emission properties of interstellar dust clouds. Polymeric HAC, for example, contains an abundance of hydrogen and strongly absorbs ultraviolet. Graphitic HAC contains less hydrogen and absorbs visible light. Such telltale differences in the spectra of each HAC may allow scientists to calculate the hydrogen in a given region of interstellar dust, the investigators say. They will detail their work in upcoming publications of the Royal Astronomical Society This article is about the British Society. For the Canadian Society, see Royal Astronomical Society of Canada.
The Royal Astronomical Society (RAS) is a learned society that began as the Astronomical Society of London in 1820 to support astronomical .