If antimatter-dominated regions of space existed, the gamma rays produced in annihilation reactions along the boundary between matter and antimatter regions would be detectable.

If the object point be infinitely distant, all rays received by the first member of the system are parallel, and their intersections, after traversing the system, vary according to their perpendicular height of incidence, i. e. their distance from the axis.

If it were, there would be X-rays and gamma rays produced as a result of annihilation, but this is not observed.

" If I had sat still, I'd probably still be measuring cosmic rays, the subject of my thesis at Princeton.

If they both used the Attic stadion of about 185 meters, then the older estimate is 1 / 6 too large, and Ptolemy's value is 1 / 6 too small, a difference explained as due to ancient scientists ' use of simple methods of measuring the earth, which were corrupted either high or low by a factor of 5 / 6, due to air's bending of horizontal light rays by 1 / 6 of the Earth's curvature.

If an aperture is narrow, then highly collimated rays are admitted, resulting in a sharp focus at the image plane.

If an aperture is wide, then uncollimated rays are admitted, resulting in a sharp focus only for rays with a certain focal length.

If one places between the phosphorescent substance and the paper a piece of money or a metal screen pierced with a cut-out design, one sees the image of these objects appear on the negative ... One must conclude from these experiments that the phosphorescent substance in question emits rays which pass through the opaque paper and reduce silver salts.

If the vertical temperature gradient is + 12. 9 ° C per 100 meters ( where the positive sign means temperature gets hotter as one goes higher ), then horizontal light rays will just follow the curvature of the Earth, and the horizon will appear flat.

If the gradient is less ( as it almost always is ) the rays are not bent enough and get lost in space, which is the normal situation of a spherical, convex " horizon ".

If null geodesics, the paths of light rays, are followed into the future, points in the future of the region are generated.

If the particle is located at the center of the beam, then individual rays of light are refracting through the particle symmetrically, resulting in no net lateral force.

If both are present, the spiny rays are always anterior.

If some versions of string theory are correct, then high-energy cosmic rays could create black holes when they collide with molecules in the Earth's atmosphere.

If the plate receives a mixture of positive and negative charges as, for example, from an induction coil, a mixed figure results, consisting of a large red central nucleus, corresponding to the negative charge, surrounded by yellow rays, corresponding to the positive charge.

If one were to imagine that the figure represents snow, and that the polygons are its ( transparent ) ice crystallites, an impinging ray is partially reflected ( a few percent ) by the first particle, enters in it, is again reflected by the interface with the second particle, enters in it, impinges on the third, and so on, generating a series of " primary " scattered rays in random directions, which, in turn, through the same mechanism, generate a large number of " secondary " scattered rays, which generate " tertiary " rays ... All these rays walk through the snow crystallytes, which do not absorb light, until they arrive at the surface and exit in random directions.

If the sun was in front of the sender, its rays were reflected directly from this mirror to the receiving station.

If the electron beam is directed at a metal plate, the betatron can be used as a source of energetic x-rays or gamma rays ; these x-rays may be used in industrial and medical applications ( historically in radiation oncology ).

If you are a certified diver you can also dive in the open ocean lagoon with pelagic fish and rays.

If a reflector is axially symmetrical and shaped so its cross-section is a parabola, it has the property of bringing light that has come from a very distant source such as the sun, so the rays of light are effectively parallel, to a point focus.

If the person we are looking up is a criminal, we will issue an alarm ; but there is of course the possibility of issuing a false alarm.

If a potential predator visits, both parents respond aggressively, issuing alarm calls and striking with talons.

If a tropical cyclone threatens the United States or its territories, individual WFOs begin issuing statements detailing the expected local effects.

If a non-filer officer determines that insufficient info is available for issuing an arbitrary assessment, they may refer the file to Investigations, who would then take the taxpayer to court.

If liens or encumbrances are found, the insurer may require that steps be taken to eliminate them ( for example, obtaining a release of an old mortgage or deed of trust that has been paid off, or requiring the payoff ) before issuing the title policy.

If its issuing authority were to fail to honor the note's value, it would soon become nearly worthless.

Cheshire's assistant chief constable denied there had been a second warning and said: " If the IRA think they can pass on their responsibility for this terrible act by issuing such a nonsensical statement, they have sadly underestimated the understanding of the British public ".

If the original issuing institution has merged with another institution, or if the CD is closed early by the purchaser, or there is some other issue, the purchaser will need to refer to the terms and conditions document to ensure that the withdrawal is processed following the original terms of the contract.

If there were no tax advantages for issuing debt, and equity could be freely issued, Miller and Modigliani showed that, under certain assumptions, the value of a leveraged firm and the value of an unleveraged firm should be the same.

If a person objects to the issuing of a CPO, they may appeal to the High Court.

If a traveler's cheque were lost or stolen, they could be replaced by the issuing financial institution.

If the issuing company is a bank holding company, it will also usually guarantee the interest and maturity payments on the trust preferred stock.

If a project ' would have happened anyway ,' then issuing offset credits for its GHG reductions will actually allow a positive net increase in GHG emissions, undermining the emissions target of the GHG program.

If the Secretary of State believes that the voluntary code of practice is not effective then he may make the code compulsory by issuing a statutory instrument which must be approved by both Houses of Parliament.

If the holder obtains a national passport this Certificate ceases to be valid and must be surrendered to the issuing authority or nearest British Consulate, High Commission or Passport Office for cancellation and return to the Holder.

If lost or destroyed, a report should immediately be made to the issuing office or to the nearest British Consulate, High Commission or Police Office, as well as to the local police.

If this large discrepancy must be attributed to more than fictitious issuing, a final explanation suggests that people had accumulated and saved headrights.

If the Consular officer does not think the relationship is bona fide or finds some legal impediment to issuing the visa, the petition will be returned to USCIS and recommended for revocation and no visa will be issued.

If, as she walked, her steps fumbled from time to time, she chose to ignore that omen.

If his dancers are sometimes made to look as if they might be creatures from Mars, this is consistent with his intention of placing them in the orbit of another world, a world in which they are freed of their pedestrian identities.

If we want respect from ourselves or others, we will have to earn it.

If we examine the three types of change from the point of view of their internal structure we find an additional profound difference between the third and the first two, one that accounts for the notable difference between the responses they evoke.

If we remove ourselves for a moment from our time and our infatuation with mental disease, isn't there something absurd about a hero in a novel who is defeated by his infantile neurosis??

If he sees the heroic in a Sartoris or a Sutpen, he sees also -- and he shows -- the blind and the mean, and he sees the Compson family disintegrating from within.

If art is to release us from these postulated things ( things we must think symbolically about ) and bring us back to the ineffable beauty and richness of the aesthetic component of reality in its immediacy, it must sever its connection with these common sense entities ''.

If, as Reid says, `` nearly all his poetry was produced when he was not taking opium '', there may be some reason to doubt that he was under its influence in the period from 1896 to 1900 when he was writing the poems to Katie King and making plans for another book of verse.

If he borrowed money from Shakespeare or with his help, he would now have been able to repay the loan.

If the indenture is accepted, the authority will proceed to validate a bond issue repayable from revenue.

`` If the day should ever come that foreign invaders swarm ashore along the Gulf Coast '', the account reads, `` they can count on heavy opposition from a group of commando-trained telephone employees -- all girls.

If it is decided to make a small shift which may be required from military aid or special assistance funds, in order to carry out the purposes of the Mutual Security Act through this new peaceful program, this will be a hopeful sign to the world.

If the superintendents do not receive more cooperation from Handlers, it has been suggested that licensed Judges also be qualified to judge this Class.

If your state has no provisions for the numbering of pleasure boats, you must apply for a number from the U.S. Coast Guard for any kind of boat with mechanical propulsion rated at more than 10 horsepower before it can be used on Federal waterways.

If you would feel happier with full collision insurance, there is a small additional charge, again varying from country to country and depending on the term of such insurance.

`` If we cannot tell evil, horror, and insanity from nonsense, what is the future of humor and comedy ''??

If it is assumed that the formula given by Lodge of cosec Af applies, the pressure difference along the major axes can be calculated from the angle of inclination of the major axis, and from this the interfacial tension can be calculated.

If we manage to keep track of a Bombus queen after she has left her feeding place, we may discover the snug little hideout which she has fixed up for herself when she woke up from her winter sleep.

If the vertex is at Af, and if the interior of C is on the left as one moves in the direction of increasing t, then every such corner can be found from the curve obtained by rotating C clockwise through 90-degrees about the vertex.

If modernization programs are imposed from above, without the understanding and cooperation of the people, they will encounter grave difficulties.

If Af leads to an address Af that is equal to the address computed from Af, even though Af does not match Af, the chain of information cells is extended from Af by storing the address of the next available cell in the Y-region, Af, in Af.

If Congress wants to displace the states from areas which they have customarily occupied, let it do so knowingly and explicitly.

If it could be shown that judgments of good and bad were not judgments at all, that they asserted nothing true or false, but merely expressed emotions like `` Hurrah '' or `` Fiddlesticks '', then these wayward judgments would cease from troubling and weary heads could be at rest.