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 the sea was visible ahead of them, the relief was as great as if the sun had come out.

When it was not, one of the great dramas of Washington would be presented.

When he had stored his stock in the great oak chest, locked the two big hasps and secured the additional chain, tied the fly of the tent, and picked up the cash box, he moved up the darkening street.

When the Yalta Papers were finally published with great fanfare they had revealed no betrayal by anyone.

`` When Mickey went to the Yankees '', says Mark Freeman, an ex-Yankee pitcher who sells mutual funds in Denver, `` DiMaggio still was playing and every day Mickey would go by his locker, just aching for some word of encouragement from this great man, this hero of his.

When Charlie came up from the beach for his four-o'clock pill, the whole establishment ( gaudy enough when seen through mist and fog ) looked like a floodlit modern painting -- great blocks of dizzy color, punctuated at regular intervals by the glaring white of five community refrigerators.

When the great reform of the 11th century had put an end to the direct jurisdiction of the lay abbots, the honorary title of abbot continued to be held by certain of the great feudal families, as late as the 13th century and later, the actual head of the community retaining that of dean.

When it comes to the 17th century and anagrams in English or other languages, there is a great deal of documented evidence of learned interest.

When several banshees appeared at once, it indicated the death of someone great or holy.

When the idea of a modern Olympics became a reality at the end of the 19th century, the initiators and organizers were looking for a great popularizing event, recalling the ancient glory of Greece.

When reporting the battle, the Anglo-Saxon Chronicle abandons its usual terse style in favour of a heroic poem vaunting the great victory.

When Cesare eventually took power, he was viewed by the citizens as a great improvement.

When the church was founded by Saint Mark during the reign of the Roman emperor Nero, a great multitude of native Egyptians ( as opposed to Greeks or Jews ) embraced the Christian faith.

When Porter left RCA in late 1964, Atkins said, " the sound was never the same, never as great.

When the bias is great enough, the two boiling points no longer overlap and so the azeotropic band disappears.

When applied to Sanskrit, however, it added a great deal of complexity to the script, due to the large variety of clusters in this language ( up to five consonants, e. g. rtsny ).

When Portuguese explorers first came into contact with the Japanese ( see Nanban period ), they described Japanese conditions in analogy, likening the Emperor, with great symbolic authority but little political power, to the Pope, and the Shogun to secular European rulers, e. g. the Holy Roman Emperor.

When compared with previous generations, Generation X represents a more heterogeneous generation, exhibiting great variety of diversity in such aspects as race, class, religion, ethnicity, and sexual orientation.

When the great crisis of 1914 arrived, it had only two weak allies ( Austria-Hungary and Ottoman Empire ) left.

The Dragon debuted in June 1976, and Gygax commented on its success years later: " When I decided that The Strategic Review was not the right vehicle, hired Tim Kask as a magazine editor for Tactical Studies Rules, and named the new publication he was to produce The Dragon, I thought we would eventually have a great periodical to serve gaming enthusiasts worldwide ... At no time did I ever contemplate so great a success or so long a lifespan.

Voss later recounted: " When Goebbels learned that Hitler had committed suicide, he was very depressed and said: ' It is a great pity that such a man is not with us any longer.

When Brown was hanged without incident, Booth stood in uniform near the scaffold and afterwards expressed great satisfaction with Brown's fate, although he admired the condemned man's bravery in facing death stoically.