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Show THE SOUND OF A SUNBEArVI. .V Wnudrrful SrlsatlRo Fact Thst STsj IlliroTPtrit Ooljr it Short lime Agd.N Ono of tho mostwooderfuldlscoveirlea In aclcnco that has been made wl(hln tho last year or two la tho fact that a beam of light produces sound, iaVs Pearson's Weekly A beam of sunlight Is thrown Uirough a lens on a glass vessel that contains Jninpblaelcv Colored Col-ored slllc or worsted or other Rub-stances. Rub-stances. A disk having slits or1 openings open-ings cut in it i.ssmado to revolve swiftly in this beam of light soak to out It up, thus malting alternate ll.isheaof light and shadow, On (ftt-tingtho (ftt-tingtho ear to tho glass vessel strnttfe sounds aro heard to long as tho flash&r beam If. falling on the vessel. "jj?f lteccutly n moro wonderful dlscoiSry has been made. A beam ot BtinUkljt Is eniiRod to pass through a prlsojiao ns lo produco j.-li.it Is called thn solar spectrum or rnlnbotv. Tho dlslIs turned nnd the colored light of (tho ratnnow is maito to breatc HirougSlU, Now place the ear to tho vessel ion-tnlnlng ion-tnlnlng tho silk, wool, or other mate Hal. As tho colored lights of tho spectrum fall upon It sounds will be given byMlf-ferent byMlf-ferent parts of tho spectrum, and tjwra will l' alienee In other parts. jW Pur Instance, If tho vessel contains red worsted nnd tho green light fliShcr upon It loud sounds n 111 bo given, (Inly feeblo Rounds will bo heard If tWjed and bine pa'rtaof the ralnliow fall upon tho vofisel, and other colors maUtyno aonnd nt all. Orcen slllc gives attracts tiest in n red light. fg livery Itlnd of material gives mcroor loan sound In different colors and uQers unsound in nthers, ,S |