Images of NGC 7094 and similar planetary nebulae exhibit intricate
filamentary structure that earns them the fittingly descriptive name of Galactic Soccer Balls or Galactic Footballs, the latter in areas of the world where soccer is more commonly referred to as football.
Any open-cell or
filamentary structure like textiles, fleece, carpet, or foam with a suitable flow resistance absorbs sound by transforming the acoustical energy into friction energy inside of the material.
Our previous measurement campaigns have indicated extensive
filamentary structure in tracer profiles and in most cases it is clear that the filaments deviate from a background profile.
Shakhatre, "
Filamentary structure of the pinch column in plasma focus discharges," Physics Letters A, vol.
FVW 172.8+1.5 is an HII complex composed of Sharpless HII regions and OB associations in the Perseus arm with individual objects organized along a large (~7-4 deg)
filamentary structure, the morphology of which has been compared to a bow tie [12].
In his wonderful drawings he presented not only the basic morphological features like multiple umbrae, light bridges, and penumbral
filamentary structure, but also "knots" in bright penumbral filaments (penumbral grains) and internal structure of light bridges.
The wollastonite produced by this company under the brand name "Fengjiashan" is world-renowned for its unique
filamentary structure and fine physical and chemical performance, and is competitive with the wollastonite produced in India and the U.S.
The
filamentary structure can range from 0.05-2.5 dtex and can be smooth or crimped, depending on the end use.
They call this mechanism "cosmic web stripping", since it is the pancake and
filamentary structure of the cosmos that is responsible for depleting the dwarfs' gas supply.
One wave moved outward to produce the
filamentary structure that appears green in visible light, and the other moved inward, producing a bubble of hot, X-ray-emitting gas (blue).