They tend to be quite dense, ranging from a few thousand to a few tens of thousands of particles per cm < sup > 3 </ sup >, compared to generally less than 1000 / cm < sup > 3 </ sup > in H II regions and planetary nebulae.

Every morning early, in the summer, we searched the trunks of the trees as high as we could reach for the locust shells, carefully detached their hooked claws from the bark where they hung, and stabled them, a weird faery herd, in an angle between the high roots of the tulip tree, where no grass grew in the dense shade.

The more humid regions have a richer vegetation ; dense forest where the rainfall is greatest and variations of temperature least, conditions found chiefly on the tropical coasts, and in the west African equatorial basin with its extension towards the upper Nile ; and savanna interspersed with trees on the greater part of the plateaus, passing as the desert regions are approached into a scrub vegetation consisting of thorny acacias, etc.

The Battle is now in the Alte Pinakothek, which has the best collection of Altdorfer's paintings, including also his small St. George and the Dragon ( 1510 ), in oil on parchment, where the two figures are tiny and almost submerged in the lush, dense forest that towers over them.

Population density also has a major impact, where dense urbanisation such as in Japan and the far east has led to the adoption of high capacity long multi-axle buses, often double-deckers, while South America and China are implementing large numbers of articulated buses for bus rapid transit schemes.

Conversely, the islands do not receive the upwellings ( cold streams ) that affect the West African coast, so the air temperature is cooler than in Senegal, but the sea is actually warmer, because the orographic relief of some islands, as Sao Miguel with steep mountains, cover it with rich woods and luxuriant vegetation where the dense moisture condense and soak the plants, rocks, soil, logs, moss etc.

The laurel forest is a type of cloud forest, the cloud forests, are developed preferably about mountains, where the dense moisture from the sea or ocean, is precipitated by the action of the relief.

Epiphytic cacti, such as species of Rhipsalis or Schlumbergera, often hang downwards, forming dense clumps where they grow in trees high above the ground.

In fact, the sum of the magnetic pressure and plasma pressure must be constant everywhere on the heliosphere in order to have an equilibrium configuration: where the magnetic field is higher, the plasma must be cooler or less dense.

Thorn forest, a dense forest of low stature with a high frequency of thorny or spiny species, is found where drought is prolonged, and especially where grazing animals are plentiful.

Some hunters, however, do their hunting in areas of dense cover where long guns would be awkward, or they relish the increased challenge involved in handgun hunting due to the necessity of approaching the game animal more closely.

The locations where the filaments meet are dense clusters of galaxies that began as small fluctuations in the early universe.

Early advances in this field showed the existence of a liquid outer core ( where shear waves were not able to propagate ) and a dense solid inner core.

Communication routes between these small centres only became populated later and created a much less dense urban morphology than, for instance, the area around Liège where the old town was there to direct migratory flows.

It showed relative positions of the Earth and Tempel-Tuttle and marks where Earth encountered dense dust.

Because the Pacific plate is the largest of all the tectonic plates on Earth, crustal material at its western edge has had a long time since formation ( up to 170 million years ) to compact and become very dense ; hence its great height-difference relative to the higher-riding Mariana Plate, at the point where the Pacific Plate crust is subducted.

Since metallic radii are always biggest for the highest coordination number, correction for less dense coordinations involves dividing by x, where 0 < x < 1.

If the fluid being measured is significantly dense, hydrostatic corrections may have to be made for the height between the moving surface of the manometer working fluid and the location where the pressure measurement is desired except when measuring differential pressure of a fluid ( for example across an orifice plate or venturi ), in which case the density ρ should be corrected by subtracting the density of the fluid being measured.

Because of the location of the shoreline — at the point where the Atlantic's cold water reach Africa — there is often extremely dense fog.

This so-called Mikheyev – Smirnov – Wolfenstein effect ( MSW effect ) is important to understand because many neutrinos emitted by fusion in the Sun pass through the dense matter in the solar core ( where essentially all solar fusion takes place ) on their way to detectors on Earth.

Before it reaches the plains it receives a great number of small streams from impenetrable, saturated and much broken mountainous districts, where the dense and varied vegetation seems to fight for every piece of ground.

Their small size is an adaptation to the thick, dense forests of the island of Sumatra where they reside, as well as the smaller-sized prey.

Of particular interest are those embeddings where the image of X is dense in K ; these are called Hausdorff compactifications of X.

A comparison of the images shows that where vegetation is dense, temperatures are cooler.

This position was also very near the galactic equator, making it almost impossible to find such an object within the dense concentration of background stars of the Milky Way.

There are equations that model the interior of stars, including neutron stars, dense matter ( quark-gluon plasmas ) and radiation fields.

Spiral galaxies, like the Milky Way, only produce new generations of stars as long as they have dense molecular clouds of interstellar hydrogen in their spiral arms.

Globular clusters, which are found in the halo of a galaxy, contain considerably more stars and are much older than the less dense galactic, or open clusters, which are found in the disk.

However, the meaning of the term has changed over time, and from the last half of the 20th century onward it has been used legitimately to refer to extremely dense phases of matter resembling the neutron-degenerate matter theorized to exist in the cores of neutron stars.

The collapsing cloud region will undergo hierarchical fragmentation into ever smaller clumps, including a particularly dense form known as infrared dark clouds, eventually leading to the formation of up to several thousand stars.

These blue stragglers are also observed in globular clusters, and in the very dense cores of globulars they are believed to arise when stars collide, forming a much hotter, more massive star.

Yet a few rare blue stars exist in globulars, thought to be formed by stellar mergers in their dense inner regions ; these stars are known as blue stragglers.

Much of the baryonic matter of the universe is in the form of hot plasma, both as rarefied interstellar medium and as dense stars.

Star formation is the process by which dense regions within molecular clouds in interstellar space, commonly referred to as " stellar nurseries ", collapse into spheres of plasma to form stars.

The Orion Nebula is an archetypical example of star formation, from the massive, young stars that are shaping the nebula to the pillars of dense gas that may be the homes of budding stars.

Buechner ’ s dense, reflective style was compared to Henry James and Marcel Proust, and he was hailed as one of the rising stars of American literature.

It keeps dense stars in equilibrium independent of the thermal structure of the star.

A dark nebula is a type of interstellar cloud that is so dense that it obscures the light from the background emission or reflection nebula ( e. g., the Horsehead Nebula ) or that it blocks out background stars ( e. g., the Snake Nebula ).

Only 1 ° away is NGC 5053, a globular cluster that is sparser and has a less dense nucleus of stars.

The dense regions which contain younger or less massive forming stars and have not blown away the material from which they formed are often seen in silhouette against the rest of the ionised nebula — these dark patches are known as Bok globules, after astronomer Bart Bok, who proposed in the 1940s that they might be stellar birthplaces, a hypothesis which was shown to be correct in 1990.

The resolution of this problem is likely related to interactions between two or more stars in the dense confines of the clusters in which blue stragglers are found.

In astronomy, the term compact star ( sometimes compact object ) is used to refer collectively to white dwarfs, neutron stars, other exotic dense stars, and black holes.

There is a remarkable variety of stars and other clumps of matter, but all dense matter in the universe must eventually end in one of only five classes of compact objects.

According to the nebular hypothesis, stars form in massive and dense clouds of molecular hydrogen — giant molecular clouds ( GMC ).