Sentences with phrase «of radiation emitted»

It may sound like a gimmick, but the Pong case has actually been tested and verified to cut down on the amount of radiation emitted by phones.

October 15, 2009 — Cedars - Sinai Medical Center in Los Angeles, California admitted Monday that a mistake in default settings on a CT scanner used to perform brain scans on patients resulted in an increase in the amount of radiation emitted by the machine.

The directionality is characterized by expressing the amount of radiation emitted into a differential solid angle and includes the factor of the COSINE of the angle between the normal to the plane of the differential area... and... the direction of the differential solid angle.

It will be convenient here to define the term radiative exchange equilibrium between two specified regions of space (or bodies) as meaning that for the two regions (or bodies) A and B, the rate of flow of radiation emitted by A and absorbed by B is equal to the rate of flow the other way, regardless of other forms of transport that may be occurring.

(Note, by the way, that what is true for a radiating object is that the amount of radiation emitted AT ANY PARTICULAR WAVELENGTH is an increasing function of the temperature, a fact that is not always obvious because people often tend to normalize the emission curves when showing emission curves for different temperatures on the same graph.)

CO2 absorbs infrared emissions from the Earth's surface only minimally in the range 7 to 13μm and it is within this range where the greatest proportion of radiation emitted by the Earth is found.

The kind of radiation emitted depends on the temperature (the higher the temperature the shorter the wavelength).

From what we know about the distribution of energy in the spectrum of the radiation emitted by a body at 55 o, it is clear that the rock - salt plate is capable of transmitting practically all of it, while the glass plate stops it entirely.

Note 2 — This assumes there is some «view factor» between the two bodies — that is, some portion of the radiation emitted by one body can «hit» the other.

Very little of the radiation emitted by Earth's surface passes directly through the atmosphere.

two regions (or bodies) A and B, the rate of flow of radiation emitted by A and absorbed by B is equal to the rate of flow the other way, regardless of other forms of (energy) transport that may be occurring.»

Where the effect of increase in CO2 is important for the energy balance is in the upper troposphere, because a significant part of the radiation emitted upwards by CO2 of the upper troposphere goes trough the tropopause to stratosphere or through it to open space.

Pekka Pirilä: Where the effect of increase in CO2 is important for the energy balance is in the upper troposphere, because a significant part of the radiation emitted upwards by CO2 of the upper troposphere goes trough the tropopause to stratosphere or through it to open space.

What will the energy of the radiation emitted by a CO2 molecules in the atmosphere at NTP, and does it depend on the temperature of the air?

Nuclear medicine scans involve injecting a short - acting radioactive agent into the patient, and images of the radiation emitted from the patient are recorded using a gamma camera.

There are several types of radiation emitted from many computers, especially laptops, and they come with different risks.

The vast volume of space probed by such a galaxy survey will provide a measure of the relationship between the amount of mass and the amount of radiation emitted by galaxies throughout the Universe.

The hole was initially detected by a NASA program studying the spread of radiation emitted from the Big Bang, which scientists believe spawned our universe.

• In a caesium atomic clock, 9 billion cycles per second (9 gigahertz) is the frequency of radiation emitted when...

The tick of an atomic clock is measured by the frequency of radiation emitted when electrons around an atom change energy states.

Then the blast of radiation emitted by the radioisotope would destroy the... tumor cells nearby.»

They then took a closer look at the spectrum of radiation emitted by each of these objects, using optical telescopes in Arizona and the world's largest radio telescope, the 305 - metre dish at Arecibo in Puerto Rico.

Last October, the team observed the spectrum of radiation emitted by a star in the LMC as it brightened by a factor of five then dimmed again.

The actual data did not look like much, mostly line graphs showing the intensity of radiation emitted by the stars at various wavelengths, but the meaning hidden behind those numbers had us talking all at once, lost in the fever of discovery.

The reactors spewed just a tenth of the radiation emitted by the Chernobyl disaster, winds blew much of that out to sea, and evacuations were swift.

Most SETI projects tune in to the 1.42 to 1.72 - gigahertz range, reasoning that alien astronomers might expect earthly scientists to be looking there anyway as this is the frequency of radiation emitted by interstellar hydrogen and hydroxyl clouds.

The frequencies of radiation emitted by an atomic clock are closely tied to a parameter called alpha, which governs the strength of the electromagnetic force.

In 1903 French scientist René Blondlot added to the frenzy with his announcement of N - rays, a strangely democratic form of radiation emitted by wood, iron, living organisms — just about anything at all.

When the public began to question the safety of nuclear testing and of radiation emitted from televisions, the government took notice.

Enormous clouds of these tiny grains scatter and absorb some of the radiation emitted from the stars — especially visible light — limiting what can be seen by telescopes here on Earth.

He realised that the frequency distribution of the radiation emitted from a hot body is a very fundamental feature of nature.

«Our results are based on a realistic modelling of the accretion of gas onto the black holes, and of the radiation they emit, which is compatible with current astronomical observations.

In Hu and his colleagues» array, each laser generates an electromagnetic field that induces a current in the lasers around it, which synchronizes the phase of the radiation they emit.

For a start the definition of a blackbody (neutrino BB) Perry's Chemical Engineering Handbook (McGraw - Hill) states «The characteristic properties of a blackbody are that it absorbs all the radiation incident on its surface and that the quality and intensity of the radiation it emits are completely determined by its temperature» Note the word surface.

Not exact matches

Its guidelines set maximum radiation exposure levels based on the amount of heat emitted by mobile phones.

And as a new study published in Health Physics recently explored, everyday foods and objects (yes, even the beloved avocado) emit a very small dose of radiation every hour.

The main concern people have about cell phones is that they emit radio - frequency (RF) energy, a type of radiation.

The sun, for example emits a lot of UV radiation, actually more and more every century.

Many of these monitors emit constant radiation 24 hours a day and are placed right next to a baby.

The HPA tested a sample of compact fluorescent light bulbs (CFLs) and found that some emitted ultraviolet radiation which could, under certain conditions, expose people above international guidelines.

Water with a little bit of tritium in it is often released from nuclear reactors, notes Gizmodo, and tritium in general (which emits a relatively weak form of radiation) is not dangerous unless it's ingested.

«I think most physicists would agree that Hawking's greatest contribution is the prediction that black holes emit radiation,» says Sean Carroll, a theoretical physicist at the California Institute of Technology.

Furthermore, exceptionally fast growth can actually cause «choking,» where the radiation emitted during these super-Eddington episodes could disrupt and even stop the flow of mass onto the black hole, halting its growth.

At a conference, another astronomer asked him if the center could archive a terabyte of data that had been collected from the MACHO sky survey, a project designed to study mysterious cosmic bodies that emit very little light or other radiation.

Wu was the first to verify — and later refine — Enrico Fermi's theory of radioactive beta - decay, which describes how some unstable atoms emit radiation when transforming into more stable atoms.

In addition to emitting visible light, the stars also gave off ultraviolet (UV) radiation, which split the neutral hydrogen it encountered into electrons and protons — ionizing it once again, and thereby launching what researchers call the «epoch of reionization.»

The gamma radiation emitted in the decay of its excited states was detected using the gamma ray spectrometer DALI2.

The hydrogen atoms fuse together into heavier and heavier elements and in the fusion process the star emits radiation in the form of light, that is, energy.

As the black holes drew near in a deepening pit of spacetime, they also churned up that fabric, emitting gravitational radiation (or gravity waves, as scientists often call them).

It all began in the mid-1970s, when Stephen Hawking of the University of Cambridge showed theoretically that black holes are not truly black, but emit radiation.