SCIENCE AT VICTORIA COLLEGE.

Dominion, Volume 4, Issue 953, 21 October 1910, Page 2

SCIENCE AT VICTORIA COLLEGE.

■ ■■'.:. ; : ->-— — ♦—-r- — ' ;, .■ '■' EXHIBITION THIS EVENING. SOME JNTEKESTII^GEXPERIMENTSJ The exhibition of experiments' which was given at Victoria College on the occasion of the opening of the: physics laboratory by his Excellency'Lord:lslington is to be;repeated to-night. ' Anyone inin the exhibits. described below may: seo: them by::visiting the science wing of Victoria College at. 8 o'clock this evening. - : The entrance '-will be from Keljurne .Parade. '[. . ■ - ~ :- t ■■'■ .'■.■--.'»'■'-■: ;. In the chemical laboratory the following experiinentsiwillbe shown: (1) Freezing of water by means of. a rotary .airpump j (2) solidification of carbonic anhydride and freezing, of quicksilver; (3)pre : paration of benzine from cpal-tar; (1). preparation: pf ccal-tar c£lcurs;,(s) a novel form of hot-air engine; (6) glass-blowing; (7) i spectroscopic analysis: ; /..',. ." ; '" '. • "■■■ In. the biology laboratory, tliere will be a demonstration of'the method of cutting and staining sections'of animal tissues for examination ■ under file .'microscope,- awl ; of tlie early stages in the development oTthe chick- embryo, and various living .organisms will, be shown. !; The Professor.... of Biology-will give 1 : an ; explanation} of certain\microscopic objects; which/Will. /be thrown l on the-screen by means,of a'.pow-' j'erfnl mioro-projector. Added interest at'.tachos to these, exhibits as some of.them. are'living..-.. :;.■:.■.-;■ "-. /-K '•'.: •.-:■;■."■'.;':• '■■■ : '" : .--J : -. ..-' In the geological laboratory students will be at work,; and_. many, interesting specimens will be available.for-esainina--. tipn/ ; ; ■ t ' , - : '/'V.;' :. ■ V;/-- , /;-- .■.": ; "; /!.'/■

:'The physics laboratory, which was opened (juite'recently :. by .fiord. Islington, is' equipped with machine' tools, , a storage-, battery, dynamo,; : etc., which; will be; open, for .inspection. . In the. .workshop a, chain will be bowled'as a hbbp^-"'■)■'. ;;,; ■•■•. ; -." ■:''■■'<■_.: .'A simple form .of.:-wireless telegraphy apparatus may be seen. { The detector of, the.Hertzian electro-magnetio;waves is , a' Slarcoui . silver-nickel 7 ; cpHererVi/>;Av-.very : simple form of , : :bf.' a' sewihg-needlp .dipping, jii,mercury, is also Used.: - :'/ ■':■: .■.■;■.■;■ , '";^:^:;; 1 ■'M'i&,' r \

• -'A' rather remarkable., exhibit. is. : one; in; ■wHioh'a soiiridds not .orilyiheard, but seen.: By illuminating. a loud .sound: wav.e with; an' electric spark as it passes. a. telescope, the air-wave is :: madewsible.:vThe : -waves are seeniiri. the. form: of'black bands, pass: ing : the illuminated, field;o£:tae;.obseryirig' telescope.' ;.:..:>■/'.^:' : >,' :^^:-'r :; : ''; j-'^'"'.-", ■':.:■■:: .Mn another 'experiment;: an , arb-light-is made to give : but a 'musical' note,.;.which •can: be varied >o at : ,\yill.,, i. ! Not only is the note heard at .the'arc light,, but it is-'-also heard coming from the electrical -generator which supplies the 'current.'- '.''■The;ex-: pertinent is of special-interest, as the; arrangements are similar; : tb those; used.; by Poulsen ,in his. system- of .wireless tele-, phony.'--! There has -recently, been thrown, ■open.!to science a/new field of bbserva'tibn.; ■By using, a..powerful light- it has become: possible to'directly-: observe objects which were. for^lphg-.i ; egarde<l:, : ae;tpo .small to' be-even'. visible -~ :with;i;va;;;>microscope.'Among these.. ultra-microscopic . particles ■ surprising rare'.'large'.mo|eculos, "the.ulti-; mate particles .of niattev;;': Among the exhibits .at; the college is; - an ■nltra-mioro-scope slibwing particlesi'bi . the: pigment gamboge', ■■■which:'are only--some"hundred thoHsaridths of an" inoK across. ■-■■;, The Pro-; •fessor of Physics:gives -ailecture'tte-at: 8.45. on . X-rays,; radium; discharge,' which will 'be.,illustrated ;by experiments..: :Som'e..of vtiieMmainii!g-ex-hibits -. the-: mercury,'V' lanip:' and ,its. specWm, high-temperature the illuminating power-of: electricity and <jas; : sound. experiments, 'stationary 1 : waves in a .cotton;thread, an ; harmdnographj , and: a;Tesla;cbil. '.;:■■ : : --::.: i;- i'-'