This can be at the surface or at the bottom.

Only the heat is extracted at the surface, and everything else that is brought up to the surface is re injected again, eliminating waste.

Land cover is the physical material at the surface of the earth.

Fish of this family are commonly seen gulping at air at the surface of the water.

The surface energy of a solid is usually measured at high temperatures.

The lake surface was at an altitude of 1,916 m above sea level.

At the same time, something much more significant is happening beneath the economic surface.

The atmospheric mass is 93 times that of Earth's atmosphere, whereas the pressure at the planet's surface is about 92 times that at Earth's surface a pressure equivalent to that at a depth of nearly 1 kilometre under Earth's oceans.

Because on Earth, almost all 99.9 percent of the methane is produced by living systems, not little green men, but microscopic life below the surface or at the surface.

At this altitude, the air density is about 1 2200000 the density on the surface.

During the colder fall season, heat is lost at the surface and the epilimnion cools.

Parts and components of liquid propellant surface to air missiles can also be reused in a surface to surface role, like the liquid propellant engines of the SA 2 missiles used in the Samoud 2 surface to surface missiles.

Shallow ponds often have a continuous temperature gradient from warmer waters at the surface to cooler waters at the bottom.

As Jupiter has no surface, the base of its atmosphere is usually considered to be the point at which atmospheric pressure is equal to , or ten times surface pressure on Earth.

Similar to surface tension, adsorption is a consequence of surface energy.

At a given time, any celestial body is located directly over one point on the Earth's surface.

In the resulting battle, both sides lost numerous warships in two extremely destructive surface engagements at night.

At such temperatures the solid creeps and even though the surface area changes, the volume remains approximately constant.

The clouds appear at their calculated elevation, determined by measuring the cloud top temperature relative to surface temperature.

At a depth equal to half the wavelength λ, the orbital movement has decayed to less than 5 of its value at the surface.

It is planned to have a network of at least four penetrators on the surface of an asteroid.

Six thousand kilometers below the surface, the planet s core is as hot as the surface of the sun.

Horizontal stresses become aligned with the current ground surface as the vertical stress drops to zero at this boundary.

The energy of the laser heats the surface of the pellet into a plasma, which explodes off the surface.

At a surface elevation of , it is located along the border between California and Nevada, west of Carson City.

Notes References External links Near Surface Geophysics Focus Group (AGU) The Near Surface Geophysics Section of the Society of Exploration Geophysicists (SEG) Near Surface Geophysics A Resource for all Things Geophysical

Bitumen permeates the dirt at the surface or, where thin layers of compost and sediment intervene, somewhat below basement levels.

On February 12, 2001, at the end of its mission, it landed on the asteroid's surface using its maneuvering jets.

(The two effects would cancel at a surface rock density of 4 3 times the average density of the whole earth.

That is why hurricanes occur in hot tropical regions, and at the end of the summer months, when the sea surface temperatures are at their annual maximum.

Well, the surface of the spray coating is actually filled with nanoparticles that form a very rough and craggly surface.

When surface temperature drops, eventually reaching the dew point, atmospheric water vapor condenses to form small droplets on the surface.

Dry lightning is used in Australia, Canada and the United States for lightning that occurs with no precipitation at the surface.

This occurs only at a specific angle and wavelength of incident light and is highly dependent on the surface of the gold, such that binding of a target analyte to a receptor on the gold surface produces a measurable signal.

D0 denotes a critical diameter at which all molecules of a low dimensional glass are located on its surface.

If one integrates over a surface of uniform intensity I , for instance over a sphere centered around the point source, the equation becomes formula_2,where I is the intensity at the surface of the sphere, and r is the radius of the sphere.

This means that earthrises are visible near the edge of the Earth observable surface of the Moon (about 20 of the surface).

10. Air and surface freight

J. Air and surface freight

Finally, surface temperature is used.

What Jonas did was not just go and do a surface look at the awful conditions that exist in such places.

Countries should establish surface and groundwater quality monitoring networks at the national level in order to protect their scarce water resources

And then for the damaged arthritis on the surface, we did a stem cell paste graft, which we designed in 1991, to regrow that articular cartilage surface and give it back a smooth surface there.

Water flows on the surface and underground.

Beneath the surface are many threatening cracks.