When EM radiation interacts with matter, its behavior changes qualitatively as its frequency changes.

When a material is exposed to an ion beam, atomic interactions occur that give off EM radiation of wavelengths in the x-ray part of the electromagnetic spectrum specific to an element.

When EM waves are absorbed by an object, the energy of the waves is converted to heat ( or converted to electricity in case of a photoelectric material ).

When neurons fire together their EM fields generate stronger EM field disturbances ; so synchronous neuron firing will tend to have a larger impact on the brain's EM field ( and thereby consciousness ) than the firing of individual neurons.

When getting into the new car EM gave Margaret, Xenia got in and joked " Look at all the legroom !!

When activated, it also generates an enormous EM field that can cause blackouts miles away.

When a continuum radiation source is used for AAS, it is necessary to use a high-resolution monochromator, as will be discussed later.

When a continuum radiation source is used for AAS measurement it is indispensable to work with a high-resolution monochromator.

When exposed to sunlight, artificial light, or infrared radiation ( even the heat of a hand nearby can be enough ), the vanes turn with no apparent motive power, the dark sides retreating from the radiation source and the light sides advancing.

When these crystals are exposed to radiation, the dysprosium atoms become excited and luminescent.

When any wire ( or other conducting object such as an antenna ) conducts alternating current, electromagnetic radiation is propagated at the same frequency as the electric current.

When electromagnetic radiation is incident on matter, it causes the charged particles to oscillate and gain energy.

When matter ( ordinary material particles ) is changed into energy ( such as energy of motion, or into radiation ), the mass of the system does not change through the transformation process.

When the first scientific satellites were launched in the first half of 1958 — Explorers 1 and 3 by the US, Sputnik 3 by the Soviet Union — they observed an intense ( and unexpected ) radiation belt around Earth, held by its magnetic field.

When lifeforms take such giant leaps, they meet little to no competition and are able to exploit a plethora of available niches, following a pattern of adaptive radiation.

* When an < sup > 235 </ sup > U atom captures a neutron, it is converted to an excited state of < sup > 236 </ sup > U. About 81 % of the excited < sup > 236 </ sup > U nuclei undergo fission, but the remainder decay to the ground state of < sup > 236 </ sup > U by emitting gamma radiation.

When a star has lost enough material, its temperature increases and the ultraviolet radiation it emits can ionize the surrounding nebula that it has thrown off.

When ionizing radiation strikes a semiconductor, it may excite an electron out of its energy level and consequently leave a hole.

When the direct solar radiation is not blocked by clouds, it is experienced as sunshine, a combination of bright light and radiant heat.

When ultraviolet radiation is not absorbed by the atmosphere or other protective coating, it can cause damage to the skin known as sunburn or trigger an adaptive change in human skin pigmentation.

When a population inversion () is present, therefore, optical amplification of incident radiation will take place.

When wavelengths of electromagnetic radiation are quoted, the wavelength in vacuum usually is intended unless the wavelength is specifically identified as the wavelength in some other medium.

When enough energy is deposited in a droplet by ionizing radiation the superheated droplet undergoes a phase transition and becomes a gas bubble.

When ground down to sizes less than 10 micrometres, the grains are removed from the inner solar system by solar radiation pressure.

When heat radiates from the surface of the earth, it is released as long-wave radiation, which can move freely through gases composed of diatomic molecules ( such as the atmosphere's oxygen and nitrogen ), but is readily absorbed by triatomic molecules, such as carbon dioxide and water vapor.

When combined with measurements of the cosmic microwave background radiation these implied a value of, a result which has been supported and refined by more recent measurements.

When the density and temperature are high enough, deuterium fusion begins, and the outward pressure of the resultant radiation slows ( but does not stop ) the collapse.

When the rear radiation is absorbed or trapped in a box, the diaphragm becomes a monopole radiator.

When his eyes began to focus, he saw Jess charging at him with a pitchfork.

When she appeared at the store to help out for a few hours even my looking at her was surreptitious lest my Uncle notice it.

When she would do these things, he would turn blind for an instant and become sick at his stomach.

When he started school at the age of five-and-a-half, he could not understand why the alphabet begins with the letter A, instead of C, as in the scale.

When I mentioned that for my first long voyage I did not even have the money for the return fare, but had trusted to luck that I would earn a sufficient amount, the young people looked at me doubtingly.

When the Revolution broke out, he, along with Jefferson and Jay, abandoned his career at the bar, with considerable financial sacrifice.

She used to tell me, `` When I stand there and look at the flag blowing this way and that way, I have the wonderful, safe feeling that Americans are protected no matter which way the wind blows ''.

When we turn to Aristotle's ideas on the moral measure of literature, it is at once apparent that he is at times equally concerned about the influence of the art.

When Quiney and William Parsons wrote to Greville in 1593 asking his consent in the election for bailiff, they sent the letter to Mr. William Sawnders, attendant on the worshipful Mr. Thomas Bushell at Marston.

When he came home from his office at the end of the afternoon, Breasted never knew what gathering he should expect to find, but there almost always was one.

There is, of course, nothing new about dystopias, for they belong to a literary tradition which, including also the closely related satiric utopias, stretches from at least as far back as the eighteenth century and Swift's Gulliver's Travels to the twentieth century and Zamiatin's We, Capek's War With The Newts, Huxley's Brave New World, E. M. Forster's `` The Machine Stops '', C. S. Lewis's That Hideous Strength, and Orwell's Nineteen Eighty-Four, and which in science fiction is represented before the present deluge as early as Wells's trilogy, The Time Machine, `` A Story Of The Days To Come '', and When The Sleeper Wakes, and as recently as Jack Williamson's `` With Folded Hands '' ( 1947 ), the classic story of men replaced by their own robots.

When he was 15, his parents finally allowed him to attend classes at the Academy of Fine Arts in Vienna.

When the knife went into his chest, he went down at once.

When Peter had reached his majority at eighteen??

When he was going to town, nothing was good enough -- he had cursed at Winston once for leaving a fleck of polish on his shoelace.

When the whole bottom has hardened, use a disk sander to feather the edges of the cloth at the keel line and near the spray rail.

When I arrived at Viola's I was shown, to my surprise, into the kitchen.

When a witness at court was asked if he had been kicked in the ensuing rumpus, he replied, `` No, it was in the stomach ''.

When it was worn in the breast, or even on the sleeve, we at least knew where it was ''.

When we look at countries like Iran, Iraq, Pakistan, and Burma, where substantial progress has been made in creating a minimum supply of modern men and of social overhead capital, and where institutions of centralized government exist, we find a second category of countries with a different set of problems and hence different priorities for policy.

When this proposal was made, Stalin spoke with stronger emotion than at any other time during the Conference.

When we repeat the remark that such suffering was a bad thing, the feeling with which we made it last week may be at or near the vanishing point, but if we were asked whether we meant to say what we did before, we should certainly answer Yes.

When the patient was not allowed to move his body in any way at all, the following striking results occurred.