When the particles are in great motion, they produce a Doppler shift for measuring wind speed in the laser light, which is used to calculate the speed of the particles, and therefore the air around the anemometer.

When light is sent through the sample, it is backscattered by the particles / droplets.

When particles in a beam are thrown against a foil made of a certain substance, the cross section is a hypothetical area measure around the target particles of the substance ( usually its atoms ) that represents a surface.

When considered as particles, they are known as photons, and each has an energy related to the frequency of the wave given by Planck's relation E

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

When these particles collide with nucleons in the Earth's atmosphere, a shower of particles is generated, including pions.

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 energy is in a form other than thermal energy, it may be transformed with good or even perfect efficiency, to any other type of energy, including electricity or production of new particles of matter.

When calculating scattering cross sections in particle physics, the interaction between particles can be described by starting from a free field which describes the incoming and outgoing particles, and including an interaction Hamiltonian to describe how the particles deflect one another.

When the intermediate states at intermediate times are energy eigenstates ( collections of particles with a definite momentum ) the series is called old-fashioned perturbation theory.

When a group of incoming particles are to scatter off each other, the process can be thought of as one where the particles travel over all possible paths, including paths that go backward in time.

When we perform the experiment, the probability of obtaining two particles in the state is now 0. 33 ; the probability of obtaining two particles in the state is 0. 33 ; and the probability of obtaining one particle in the state and the other in the state is 0. 33.

When the number of particles in one excited state exceeds the number of particles in some lower-energy state, population inversion is achieved and the amount of stimulated emission due to light that passes through is larger than the amount of absorption.

When they encounter an infection site the particles gain a positive charge provoked by the slightly acidic environment at the infection sites, allowing them to bind to the negatively charged bacterial cell walls and release antibiotics at locally high concentration.

When considering light's particle-like properties, the light is modelled as a collection of particles called " photons ".

When subjected to an electromagnetic field the paramagnetic particles change spacing, modifying their color and reflective properties.

When these viral episomes initiate lytic replication to generate multiple virus particles, they in general activate cellular innate immunity defense mechanisms that kill the host cell.

When I show up he will know you are a good wife to have told him about it ''.

When the Know-nothings get control, it will read, All men are created equal except Negroes and foreigners and Catholics.

When the reactionary response is thus bolstered by an intellectual defense, the characteristics of that defense are explicable only in terms of the basic attitudes of unanalyzed reaction.

When combined with the metaphysical notion that pure forms of this universe are best appreciated when least embodied in a material substratum, it becomes clear that while earth will be dross on a scale of material-formal ratios, celestial bodies will be of a subtle, quickened, ethereal existence, in whose embodiment pure form will be the dominant component and matter will be absent or remain subsidiary.

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 consider the disorganized state of the world community, and the legacy of predispositions adversely directed against all who are identified as Jews, it is obvious that the struggle for the minds and muscles of men needs to be prosecuted with increasing vigor and skill.

When these fields are surveyed together, important patterns of relationship emerge indicating a vast community of reciprocal influence, a continuity of thought and expression including many traditions, primarily literary, religious, and philosophical, but frequently including contact with the fine arts and even, to some extent, with science.

When different colors are used, she is just as likely to color trees purple, hair green, etc..

When finally the two bedraggled men reach their friend's home, Voltaire's fears are once again aroused.

`` When are you to leave ''??

When the roof blocks are all in place, the final rows of wall blocks are mortared into position.

When the aid operations are reorganized the Peace Corps should remain a semi-autonomous, functional unit.

When the budget goes to trustees for approval it is the president's budget, to which his faith and credit are committed ; ;

When they have 4 to 6 leaves and are thrifty little plants, it's time to set them out where they are to remain.

When aircraft are no longer helpless on airfields, they are no longer vulnerable to Aj.

When more than two figures are separated by subtraction symbols the subtraction must be carried out from the left to right if the result is to be correct.

When they're on, the top edges are planed even with the sheer batten.

When painting, Mason's physical eyes are half-closed, while his mind's eye is wide open, and this circumstance accounts in part for the impression he wishes to convey.

When improvements are recommended in working conditions -- such as lighting, rest rooms, eating facilities, air-conditioning -- do you try to set a measure of their effectiveness on productivity??

When sufficiently accurate and complete measurements are available, it will be possible to set limits on the thermal and electrical characteristics of the surface and subsurface materials of the moon.

When some thirteen records of newly and recently born individuals are collated, little or no correlation between length and distribution can be detected.

When three dice are tossed repeatedly, what is the probability that the number of aces is 0 ( or 1, or 2, or 3 )??

When a system expels or accelerates mass in one direction, the accelerated mass will cause a force of equal magnitude but opposite direction on that system.

When Theodore Roosevelt became President in 1901, he accelerated a foreign policy shift away from isolationism towards foreign intervention which had begun under his predecessor, William McKinley.

When accelerated growth is present, it is thought to result from the duplication of the IGF1 receptor gene.

When the meteoroids pass by Earth, some are accelerated ( making wider orbits around the Sun ), others are decelerated ( making shorter orbits ), resulting in gaps in the dust trail in the next return ( like opening a curtain, with grains piling up at the beginning and end of the gap ).

When he heard the novel had been accepted, Scott wrote to publisher Maxwell Perkins, urging an accelerated release: " I have so many things dependent on its success — including of course a girl ".

When this auction was declared illegal, his young son took over the reins of the huge ranch and accelerated efforts to increase its agricultural production In 1894, Irvine's son, James Irvine II, incorporated the land holdings as the Irvine Company.

When PCF ministers resigned in 1984 to protest Mitterrand's change of economic policies, the party's electoral decline accelerated.

When electrons are accelerated, as occurs when an AC electrical field is impressed on an antenna, they will radiate electromagnetic waves.

When the LEP collider started operation in August 1989 it accelerated the electrons and positrons to a total energy of 45 GeV each to enable production of the Z boson, which has a mass of 91 GeV.

When an electric charge is accelerated ( or de-accelerated ) it emits Bremsstrahlung radiation.

When they struck it, they knocked electrons out of the metal, which were accelerated along with the electrons knocked from the gas atoms toward the anode target.

When this accelerated jet of water passes through the delivery cone, it is capable to developing a much higher pressure than that of the original supply of steam and is thus able to overcome the boiler pressure at the check valve, thereby allowing water to enter the boiler.

When the cartridge pushes against the bolt face, the lever moves the bolt carrier rearward at an accelerated rate relative to the light bolt.

When Theodore Roosevelt became President in 1901, he accelerated a foreign policy shift away from isolationism towards foreign involvement, a process which had begun under his predecessor William McKinley.

When the EU announced their new quotas to replace the lapsed MFA, Chinese manufacturers accelerated their shipping of the goods intended for the European market.

When the primary beam consists of accelerated electrons, the probe is termed an electron microprobe, when the primary beam consists of accelerated ions, the term Ion Microprobe is used.

When the Swift Creek Reservoir was created, the availability of water and sewer service accelerated residential growth.

When a charged particle in a gas or liquid is acted upon by a uniform electric field, it will be accelerated until it reaches a constant drift velocity according to the formula:

When a fire is accelerated with a true accelerant like oxygen bearing liquids and gases ( like

When the course was ready for testing in 1990, the focus was turned to younger students who had been accelerated in their mathematics educations.

When the weight is at mid-thigh, the bar is accelerated upward by powerful hip + knee + ankle extension until the body is fully erect.

When excavating the Badaling railway tunnel, he accelerated construction by drilling a vertical shaft into the path of the tunnel.

When Queen Anne's War ( the North American part of the War of Spanish Succession ) started in 1702, England and Spain were officially at war, and attacks by the English and their Indian allies against the Spanish and the Mission Indians in Florida and southeastern Georgia accelerated.