Sentences with phrase «electromagnetic waves»
"Electromagnetic waves" refer to waves of energy that are made up of both electric and magnetic fields. These waves travel through space and carry energy and information with them. They include familiar forms of waves such as light waves, radio waves, and X-rays. Full definition
Some parents wonder if there are health risks to the baby with the use of electromagnetic waves to transmit sound and video.
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Creating and analyzing an image from electromagnetic waves involves both data collection and processing.
The laser field would then shake the particles, causing them to emit electromagnetic waves — in this case, gamma rays.
The system was robust and not affected by electromagnetic waves from nearby mobile phones or from the motion of nearby steel objects.
The method developed here can also be applied to escape detection by other electromagnetic waves or sound.
That was what physicists today call a classical field theory, and it works very well for longer - wavelength electromagnetic waves such as radio waves.
For researchers to manipulate electromagnetic waves, however, they've typically had to use electrically conducting metals.
Sending electromagnetic waves through the ice essentially allowed the scientists to see through the ice.
If you are worried about this, you should put the monitor as far away from baby as possible so the baby doesn't get electromagnetic wave exposure.
Either way, far - field electromagnetic waves have been ignored as a potential wireless power source for medical devices.
The heat loss from a planet happens through IR radiation, since space is virtually a vacuum where energy is only transmitted though electromagnetic waves.
We now know that light exists in the dual form of electromagnetic waves / particles (photons).
The richest source of information came from electromagnetic waves, which accounted for about 80 percent of the useful data.
One possibility for communicating across the vast distances of space is the use of radio or other electromagnetic waves.
Before Poon's discovery, there was a clear divide between the two main types of electromagnetic waves in everyday use, called far - field and near - field waves.
The development is timely: while the latest wireless communications use electromagnetic waves with a frequency of over 100 gigahertz, the best wave absorbers commercially available are effective only up to around half that.
The result is ripples in space - time that spread out at the speed of light, just as electromagnetic waves generated by accelerating electric charges spread.
Whereas ADS — B is continuously collecting and transmitting information, radar emits electromagnetic waves at regular intervals — every 12 seconds or so — and measures the time it takes for their reflection to return to determine the proximity of objects to an aircraft.»
In this story, and in his latest book, 17 Equations that Changed the World, Ian Stewart uses Maxwell's equation for electromagnetic waves propagating in a vacuum.
And, it is hypothesized that gravitational waves are responsible for transporting energy in the form of gravitational radiation — much like electromagnetic waves carry electromagnetic radiation.
In spite of the recent detection of gravitational waves from binary black holes by LIGO, direct evidence using electromagnetic waves remains elusive and astronomers are searching for it with radio telescopes.
They nonetheless stir up electromagnetic waves within the droplet.
«Solving for electromagnetic wave propagation in large 3D structures is very computationally demanding, and can only be done on high - performance computers,» he added.
Together with Masao Kotani of the University of Tokyo, he developed a theory of magnetrons — devices used in radar systems for generating electromagnetic waves — for the navy.
When activated by a reader a few centimeters (inches) away, a small amount of data flows between the two devices via electromagnetic waves.
About 150 years ago, James Clerk Maxwell devised a set of equations that predicted the existence of electromagnetic waves propagating at the speed of light.
Electromagnetic waves travel over vast distances, so perhaps there is some way the electrical impulses that generate thoughts could be transmitted from one person to another.
To prove their concept, the researchers used a three - dimensional, microwave - scale photonic crystal constructed from layered alumina rods and containing a full bandgap — a wavelength range in which electromagnetic waves can not transmit.
To separate molecules and their mirror images, Dionne is developing techniques that use circularly polarized light, in which the light's wiggling electromagnetic waves rotate over time.
Wave absorbers are usually made from iron - rich oxides, but higher - frequency transmissions outstrip the power of iron to absorb electromagnetic waves.
Electromagnetic waves carry radiating energy from one place to another.
According to the Will - Synge interpretation of Whitehead's theory, gravitational forces are propagated along straight lines determined by the prior geometry, while electromagnetic waves are deflected by the contingencies of the universe.
This research has mostly involved the use of metamaterials, which are extremely thin composites that bend electromagnetic waves in a way that negatively refracts lights.
Millimeter wave technology bounces electromagnetic waves off the body to create a black - and - white, three - dimensional image.
A technology that squeezes electromagnetic waves into minuscule structures may yield a new generation of superfast computer chips and ultrasensitive molecular detectors
When in an energized state, the enclosed plasma can readily radiate, absorb or reflect electromagnetic waves.
The original invisibility cloaks smoothly funnel light or longer wavelength electromagnetic waves around an object so that it can't be seen.
«When the incident electromagnetic wave hits the device, the wave will be trapped and guided in the shell region towards the core of the black hole, and will then be absorbed by the core,» says Cui.
In a study published in the journal Science, one section of a University of British Columbia physics course about electromagnetic waves was taught by the cognitive approach, while another section was taught by the standard course lecture.
Scientists * have proposed various devices capable of redirecting electromagnetic waves with efficiency levels close to 100 %.
It's more difficult to do, but scientists measure electromagnetic waves the same way — from crest to crest or from trough to trough.
... propagate as what are called electromagnetic waves.
Energy transfer in the form of electromagnetic waves includes infrared radiation, visible light, and ultraviolet rays.
Through all these ups and downs, the essential mission of Spitzer remained constant: to learn more about the universe by detecting infrared rays, electromagnetic waves slightly longer than visible light.
Polarisation can be thought of as the direction electromagnetic waves, such as light or radio waves, «vibrate».