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42:5.2Wave­like en­ergy man­i­fes­ta­tions—from the stand­point of twen­ti­eth-cen­tury Uran­tia sci­en­tific en­light­en­ment—may be clas­si­fied into the fol­low­ing ten groups:

42:5.31. In­fraulti­ma­tonic rays—the bor­der­land rev­o­lu­tions of ul­ti­ma­tons as they be­gin to as­sume def­i­nite form. This is the first stage of emer­gent en­ergy in which wave­like phe­nom­ena can be de­tected and mea­sured.

42:5.42. Ul­ti­ma­tonic rays. The as­sem­bly of en­ergy into the minute spheres of the ul­ti­ma­tons oc­ca­sions vi­bra­tions in the con­tent of space which are dis­cern­i­ble and mea­sur­able. And long be­fore physi­cists ever dis­cover the ul­ti­ma­ton, they will un­doubt­edly de­tect the phe­nom­ena of these rays as they shower in upon Uran­tia. These short and pow­er­ful rays rep­re­sent the ini­tial ac­tiv­ity of the ul­ti­ma­tons as they are slowed down to that point where they veer to­wards the elec­tronic or­ga­ni­za­tion of mat­ter. As the ul­ti­ma­tons ag­gre­gate into elec­trons, con­den­sa­tion oc­curs with a con­se­quent stor­age of en­ergy.

42:5.53. The short space rays. These are the short­est of all purely elec­tronic vi­bra­tions and rep­re­sent the preatomic stage of this form of mat­ter. These rays re­quire ex­traor­di­nar­ily high or low tem­per­a­tures for their pro­duc­tion. There are two sorts of these space rays: one at­ten­dant upon the birth of atoms and the other in­dica­tive of atomic dis­rup­tion. They em­anate in the largest quan­ti­ties from the dens­est plane of the super­uni­verse, the Milky Way, which is also the dens­est plane of the outer uni­verses.

42:5.64. The elec­tronic stage. This stage of en­ergy is the ba­sis of all ma­te­ri­al­iza­tion in the seven super­uni­verses. When elec­trons pass from higher to lower en­ergy lev­els of or­bital rev­o­lu­tion, quanta are al­ways given off. Or­bital shift­ing of elec­trons re­sults in the ejec­tion or the ab­sorp­tion of very def­i­nite and uni­form mea­sur­able par­ti­cles of light-en­ergy, while the in­di­vid­ual elec­tron al­ways gives up a par­ti­cle of light-en­ergy when sub­jected to col­li­sion. Wave­like en­ergy man­i­fes­ta­tions also at­tend upon the per­for­mances of the pos­i­tive bod­ies and the other mem­bers of the elec­tronic stage.

42:5.75. Gamma rays—those em­a­na­tions which char­ac­ter­ize the spon­ta­neous dis­so­ci­a­tion of atomic mat­ter. The best il­lus­tra­tion of this form of elec­tronic ac­tiv­ity is in the phe­nom­ena as­so­ci­ated with ra­dium dis­in­te­gra­tion.

42:5.86. The X-ray group. The next step in the slow­ing down of the elec­tron yields the var­i­ous forms of so­lar X rays to­gether with ar­ti­fi­cially gen­er­ated X rays. The elec­tronic charge cre­ates an elec­tric field; move­ment gives rise to an elec­tric cur­rent; the cur­rent pro­duces a mag­netic field. When an elec­tron is sud­denly stopped, the re­sul­tant elec­tro­mag­netic com­mo­tion pro­duces the X ray; the X ray is that dis­tur­bance. The so­lar X rays are iden­ti­cal with those which are me­chan­i­cally gen­er­ated for ex­plor­ing the in­te­rior of the hu­man body ex­cept that they are a tri­fle longer.

42:5.97. The ul­tra­vi­o­let or chem­i­cal rays of sun­light and the var­i­ous me­chan­i­cal pro­duc­tions.

42:5.108. The white light—the whole vis­i­ble light of the suns.

42:5.119. In­frared rays—the slow­ing down of elec­tronic ac­tiv­ity still nearer the stage of ap­pre­cia­ble heat.