Sentences with phrase «emitted by»

So the beam emitted by the array is much tighter than that emitted by other experimental chip - scale lasers.

Its power requirements are relatively low because the radiation emitted by all of the lasers is «phase locked,» meaning that the troughs and crests of its waves are perfectly aligned.

However, the model calculations have been very inaccurate, as there are still large gaps in our knowledge concerning the role of the compounds emitted by plants during the transition between gaseous and solid state.

Our homes and offices account for more than one third of all greenhouse gases emitted by human activity — the bulk of it for heating in winter and air - conditioning in summer, according to the U.N. Intergovernmental Panel on Climate Change (IPCC).

At the moment, these carbon markets only trade in credits for terrestrial ecosystems; for example, keeping a certain amount of forest intact in order to offset a ton of carbon dioxide emitted by burning fossil fuels.

By gathering the radio signals emitted by any particular quasar at various far - flung points about the globe and measuring the tiny time lag between the signal's arrival at the different locations, people like Ma and Behrend can tell exactly how far apart those locations are.

After all, coal burning is responsible for 40 percent of the 30 billion metric tons of CO2 emitted by human activity every year.

The photons emitted by such explosions, traveling at the speed of light, or about 300,000 kilometers per second, can still take billions of years to reach Earth, covering distances so vast it exceeds human comprehension.

A knowledgeable enemy could probe side - channels, such as electromagnetic fields or sounds emitted by a working device, and potentially gain enough information about its internal operations to crack even mathematically sound encryption methods used to protect the design.

The next step, Wright notes, is to look at a more complete assessment of beaver meadows» carbon budget that takes into account the greenhouse gases emitted by microbes that tend to thrive in moist sediments such as natural wetlands and rice paddies.

«While this galaxy is forming stars at a rate hundreds of times faster than our Milky Way galaxy, the sharp vision of Hubble revealed that the majority of the galaxy's starlight is being emitted by a region with a diameter just a few percent that of the Milky Way,» said Geach.

According to the experiments of Langley, the carbon dioxide and the water vapor, which the atmosphere contains, are more opaque to the heat rays of great wave lengths which are emitted by the earth, than to the waves of various lengths which emanate from the sun.

But this might be limited to thin layers of cells in laboratory settings, since the visible light emitted by the diamond probes — a faint green glow — does not penetrate whole human tissue very well.

Two additional features of the pulses emitted by mode - locked lasers are keys to the development of optical frequency combs.

«This is the first large - scale implementation at RHIC using next - generation silicon photomultipliers for the detection of scintillator light emitted by plastic scintillators, which create light when charged particles pass through them,» Dunlop said.

In particular, any virtual gravitons emitted by the singularity will be trapped inside that singularity.

The UK is leading this new field of health research based on listening to the sounds emitted by the body.

Layers of ice in the upper reaches of glaciers provide a year - by - year chronicle of soot emitted by local industry and by the coal and wood burned to heat homes in the valleys nearby.

Stripes of electric sensors run along their heads and eel - like fins, detecting pulses emitted by food and foes.

Almost immediately, the fluorescence emitted by the cells changed: Right along the cell membranes, the intensity of the fluorescence decreased, which indicated (counterintuitively) that the temperature was rising in that locus and nowhere else in the cell.

With the technology that has historically been used to produce glasses - free 3 - D images — known as a parallax barrier — simultaneously projecting eight different viewing angles would mean allotting each angle one - eighth of the light emitted by the projector, which would make for a dim movie.

Most light from meteors comes from spectral lines emitted by the elements they contain, so the impacts may be easiest to see though filters which isolate those lines.

Yet the total light emitted by the galaxies of Eridanus A is only twice that of the Milky Way.

The first detection of neutrinos did not occur until 1955, when Clyde Cowan and Frederick Reines recorded anti-neutrinos emitted by a nuclear reactor.

That was consistent with a quasar, but dust blocked the definitive quasar signature of spectral lines emitted by gas near the black hole.

Instead of sequestering carbon dioxide after it is emitted by cars and power plants, grab it from the air and reduce it to hydrocarbon fuels for us to use.

Hence, the distribution that we see is simply an exaggeration of the original distribution of the light wavelengths emitted by the sun.

Yokelson, who is another author of the recent paper, had made some measurements in Mexico of what sort of pollutants were being emitted by trash burning.

Britain plans to be the first European country to follow the US by legislating that data on hundreds of pollutants emitted by industry should be routinely available to the public.

Despite the fact that many chemicals used or emitted by this industry are toxic to humans, no biological monitoring programs have been implemented in the region.»

They are the resonant frequencies emitted by the more abundant molecules and free radicals m interstellar space.

For example, from laboratory experiments we can determine the amount of amino acids produced per photon of ultraviolet radiation, and from our knowledge of stellar evolution we can calculate the amount of ultraviolet radiation emitted by the sun over the first billion years of the existence of the earth.

Sunspot activity, which ebbs and flows on an 11 - year cycle, decreases the cosmic ray flux by periodically increasing the solar wind — a stream of charged particles emitted by the sun.

In some active galactic nuclei, you have a black hole and accretion disk and the majority of the power is associated with these outflowing jets, far more than is associated with the radiant energy that is emitted by the accretion disk and the hot gas surrounding it.

It produces no carbon dioxide exhaust emissions, and even when the CO2 released in generating the electricity used to charge its batteries is factored in, it is responsible for less than half the amount emitted by the «greenest» petrol cars.

While oil and gas companies work to minimize the amount of methane emitted by their operations, almost no attention has been paid to wells that were drilled decades ago.

A radio antenna then picks up very weak signals emitted by the electrons, which can be used to map the electrons» precise activity over several milliseconds.

That can happen only if neutrinos are their own antiparticle, in which case an antineutrino would be emitted by a neutron and then — presto!

An estimated 40 to 50 percent of the garbage is made up of carbon by mass, which means that carbon dioxide is the major gas emitted by trash burning.

Eating meat contributes to climate change, due to greenhouse gasses emitted by livestock.

If a star seems to disappear, the team will try to confirm the formation of a black hole by looking for X-rays emitted by stray bits of matter falling into the black hole, Kochanek says.

Later, the relationship between the light emitted by the crystal and the deposited energy in analyzed, so that the precise dose the patient will receive is known.

Recent studies of the electric fish Torpedo suggest that the source of the acetylcholine emitted by a neuron is the cytoplasm rather than the synaptic vesicles

Natural gas produces a quarter of the nitrogen oxides emitted by coal and half the carbon dioxide for every unit of electricity generated.

That's because they underwent a process in which silica — likely emitted by a nearby volcano — saturated the tree and took on the shape of the wood's internal structure as it decayed, preserving its 3D cellular structure.

Infrared is the predominant kind of heat and light emitted by heaters that glow red - hot.

Sulfate is emitted by human activities in addition to natural emissions such as volcanoes.

But picking out that signal from the gamma - ray light emitted by garden - variety astronomical objects will likely take a year or more.

[2] Neutral hydrogen gas absorbs all the high - energy ultraviolet light emitted by hot young stars very efficiently.

They found that noise from vehicles along the busy highways often drowns out the alarms emitted by birds.