When EM radiation at the frequences for which it is referred to as " radio waves " impinges upon a conductor, it couples to the conductor, travels along it, and induces an electric current on the surface of the conductor by moving the electrons of the conducting material in correlated bunches of charge.

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 the electron beam interacts with the specimen, it loses energy by a variety of mechanisms.

When EMR interacts with single atoms and molecules, its behaviour depends on the amount of energy per quantum it carries.

When the primary electron beam interacts with the sample, the electrons lose energy by repeated random scattering and absorption within a teardrop-shaped volume of the specimen known as the interaction volume, which extends from less than 100 nm to around 5 µm into the surface.

When a user interacts with the package management software to bring about an upgrade, it is customary to present the user with the list of things to be done ( usually the list of packages to be upgraded, and possibly giving the old and new version numbers ), and allow the user to either accept the upgrade in bulk, or select individual packages for upgrades.

When visible light interacts with the ice crystals in cirrus clouds, it produces optical phenomena such as sun dogs and haloes.

When a system interacts with its environment, such as through a measurement, the conditional wavefunction of the system evolves in a different way.

When a learner interacts with the e-learning environment, it's called augmented learning.

When there is a surrounding material such as air, rock, or water, this radiation interacts with and rapidly heats it to an equilibrium temperature ( i. e. so that the matter is at the same temperature as the atomic bomb's matter ).

When a nuclear detonation occurs in air near sea level, much of the released energy interacts with the atmosphere and creates a shockwave which expands spherically from the hypocenter.

When a charged particle ( for example, an alpha or beta particle ) interacts with the mixture, it ionizes it.

When the SP1 protein interacts with the 21 bp repeats it binds either the first or the last three GC boxes.

When the surface plasmon wave interacts with a local particle or irregularity, such as a rough surface, part of the energy can be re-emitted as light.

When the blade comes into contact with the lamé, the electrical mask, or the manchette, the current flows through the body cord and interacts with the scoring equipment.

When the molecule interacts with protons from an acid the bonds become harder to excite and thus absorb green light which has a shorter wavelength.