-4 P"2 Four THE TAR. HEEL Tuesday, March 5, 1929 HENDERSON TALKS ABOUT RELATIVITY University Professor Gives His Ideas on New Theory of ' Scientist. NORTH GRABS AROLMA iN.NEt By. J. P. HUSKINS , Dr. Archibald Henderson, head of the Mathematics Department of the University of North Carolina and a member of the Eoyal 'Academy of Science, was told recently, that he had a visitor; "and on going 'clown from his study to receive his caller, he found him quietly enjoying a game of marbles with the boys, little won dering whether those marbles rolled along on the carpet because of any particular warp in . space, or whether any line was , straight or any circle round. v ..." ' '' : "Do you want to talk to me ?" asked Dr. Henderson. V. : , "Yes, if you have the time," was the answer. ' - . . " "Well, fire away, fire away!" "It's rather hard to fire when Vour gun's not loaded," confessed the caller, who had come to talk of Ein stein and Relativity. , Both laughed, and the interview had started. "Dr. Henderson; as you know, Ein stein has announced a third theory in which he is reported to have said that there were only twelve men in the , world capable of understanding, Are you one of the twelve?" - Dr.- Henderson . said . something about being kidded and continued, . -"No, I'm not one of the twelve. Or if I am, I don't know it; for I have not ye" received an exact copy of the theory. - I have my own idea of what it deals with however." "In what way does it differ from '-his former theories?" the questioner ' continued. . "In order to understand the jneari- ing of the new theory, it's necessary to have a general knowledge of the foffiier ones," the head of the mathe matics department explained. Here he plunged into an exposition nf Einstein's Special and General 'Relativity, theories. A summary fol lows : The Special Relativity theory deals primarily with motion of bodies in time and space. Only systems moving with uniform relative velocity are included. For example, Einstein showed in this theory that all phe- "nomena of nature' are the, same for any two observers who move rela tive to one another rectilinearly, " with a constant velocity. Gravita tion is left out of account; and, a fundamental place is given to the ' constancy of light velocity in empty space. The velocity of light in free space appears the same to all observ ers regardless of the relative motion of the source of . light and the ob server. ; . ..:' ' ' - But this' theory was not all- inclu sive; -it had taken no consideration of gravitation.' Therefore Einstein set himself to the explanation of this phenomenon. So he formulated his - General Relativity theory, explaining gravitation as a warp in space caused by an electro-magnetic field set up by the presence s of matter which' is in origin and structure"' electro-magnetic. Therefore space and matter are relative, and the nature of space is not fixed but is 'relative to matter. The geometry of any region is con ditioned upon the . nature of the : gravitational field. Distance and duration, for thi3 reason, - must be estimated in relation to the observer. "Now," continued Dr. Henderson, "Einstein's .last theory deals, doubt lessly with' the nature and composi tion of light There are two ideas concerning the composition and transmission of light. Some scien tists are working1 with one and are getting results that seem to estab lish their position. 'Others ar work ing . with the other" and are getting equally convincing Tesults. Some scientists hold that light is) a series -of waves set up in ether. The other conception, the corpuscular theory, is that light travels .,in bundles. Einstein's latest work is r an attempt to bridge over; this gap in scientific reasoning by harmonizing these two theories." . "Dr.r .Henderson, since Einstein's explanation of gravitation eliminates the idea of one body's exerting an attraction , for another body, do you Believe there is any fixed frame work of reference around which the whole universe revolves?" "No. According to Einstein there can be no" fixed frame-work of refer ence. If there were, then it would be impossible to establish the idea of absolute motion," , ."x ' . '.'Then do ' you agree with Sir Oliver Lodge in his attempt to estab lish aether as this fixed reference?" "Lodge is very much like Archime des, who said that if you would give him a lever long enough, he could turn the world over. But he .'didn't have any place to puij his. lever. Lodge's theory ij all right, but he doesn't have any place to. put it." YORK FORI CLUB Men Working for General Elec tric in Schenectady Hold ; Interesting Bleetings. ; Graduates of North Carolina col leges now employed by .the General Electric organization in Schenectady, N. Y., have organized a Tar Heel club which is having an active existence according to word brought here by Henry Wheeler, sonpf Dr. Afvin "S. Wheeler and a recent University gra duate, who is now with. the.General Electric Company in Schenectady. M. L. Rockfield, State1 .' College alumnus, is president, H. G. Wheeler, graduate of .the : University, isv vice-president,-and S. W. Matthews, State College graduate, is secretary- treas urer. -': , The organization held a very en joyable banquet last week to discuss plans for the year, v . N ' ... At this time it, was decided to pre pare a pamphlet . witn pictures ana positions of all North Carolina men in " the General Electric, organization to 'show the opportunities for , North Carolina men in the corporation, the pamphlets to., be distributed among North Carolina institutions. v The banquet was followed by an interesting program showing the growth of photophone, the General Electric contribution to talking movies, from the germ of an" idea to the present stage of development. An interesting feature in this con nection was the reproduction of the first sound ever recorded on aphoto graphic film, by Mr. Hoxie in 1921. The original apparatus used in this recording was shown and its use-demonstrated. ' , ,- The possibilities of using photo phone for commercial films and '.for entertainment films were described. As a final touch three short films were shown to show how much better the laboratory reproduction is than theatre reproduction. T. Jr McManis, assistant publicity manager for General Electric, has been largely instrumental in helping the Tar Heel grads organize.. ... To Issue Pamphlet On Holiday Courses Word has been received at the In stitute, of International Education! in New York that the League of Nations' Institute of Intellectual Cooperation will again publish a pamphlet giving full information concerning ' holiday courses which will be given in Europe next summer. : , - x The pamphlet will contain inf orma tion concerning where the courses will be held, subjects of instruction, fees, diplomas awarded, facilities -: for travel and residence, and ' the name of "the person to whom inquiries may be addressed. It will contain Tro- grams of more than- one hundred courses. . ' . 1 1 1 ' UNIVERSITY BAND GIVES EX CELLENT PROGRAM SUNDAY , Continued from page one) by R. M. Chamberlain and K. L. Kjellesvig. They were very good in their individual parts, but when joined in chorus by the band, the shrill notes of some dying piccolo tried to throw them out of harmony with each other. It is conceded that it is, very, .difficult for two flutists to keep perfect time with each other while playing a hard part of a num ber, but there were times in which the audience sensed that one of" the players was off key, and yet could not distinguish who it was. The piccolo section came into prominence when the band rejoined the flutist, but not for any fame for there were rmany instances in , which ""the - piece threatened to be rumed by their being off pitch and grabbing: notes before the director instructed, them to. ,The Londonderry Air (arranged by Lake) was next on the program and very beautiful. It was a sad sort of piece, one that kind of put you in a reminiscent mood; . It was well played and the "band - came 'together in an excellent fashion while playing this selection. The trumpet section came in for more praise on this number, and this may be termed the best played selection in the first group. ; -" The second group, was opened by the Serenade Roccoco (by Meyer Helmund). It was a very; lively number and was well done. Charles White was again noticed in his play ing in this selection. The last two notes were , played by the bassoon,1 furnishing a clever ending for the enjoyable piece. - Under the Spanish Flag; from the Cubaland Suite (by Sousa), ; came next. : The clarinets were oft- key to a great extent. They furnished, how ever, a happyv medium between the way the piece should have been played and the. way tthe erratic piccolo was playing it. The whole brass section performed . excellently during ''this number, but -the beauty of-the piece was spoiled by the noisy clarinets. The last number, a fantasia, Nero, The Burning of Rome (by Colby) was wonderful. It was by far the best on the program, ! and any other faults that the band had were cer tainly erased from the memory of the audience by the. excellent way in which the", band played this selection. It was the most difficult to play and by far the best played. Every sec tion of the band did well on this se lection. The piece, in its ef a tonal story of the castle of Nero with its revelry bursting out into flames, was thoroughly" enjoyed. The audience went home satisfied. The last num ber was worth paying a priee of ad mission (although none was charged Sunday) to hear. ; Advertise in the TAR HEEL. FOR RENT For Rent April 1st Fraternity - . House near Post Office. See W. L. Tankersley, Room 12, Tankersley Building. ; V DR. J. P. JONES Dentist Over Welcome-In Cafeteria, . PHONE 5761 J Have You -Chosen Your Life Work In the Field of 'Health Service? r The 'Harvard University -Dental School the1 oldest dental school con nected with any university, in the United States off ers thorough well balanced courses in all branches of dentistry. All modern equipment for practical work under supervision of men high in the profession. Write for details and admission re quirements to Leroy M.S. Miner, Dean. Harvard University Dental School ... Longwood Ave., Boston, tMass. . 8395 Decisions This Smoke Ipswich, S..D. Larus & Brother Co., SePt 4 1928 ' Richmond, Va. ..Gentlemen: . In answer to the challenge of J. J. Roberts of Columbia, S. D., a3 printed in the Minneapolis Journal dated Sun day, September 2nd, I have smoked Edgeworth for twenty-three (23) years and for two years, previous to that time I smoked Qboid, which, I believe, is manufactured by your firm. During this time I have smoked at least one can each day, and to verify this statement you may address' the : C & C Cafe of this city, where I make . my tobacco purchases. s- - ' It may be interesting to know that my purchases of Edgeworth during this period have totaled more than 8395 (eight thousand three hundred ninety-five) cans.representin gatotal ex- Eenditure of more than $1259 (twelve undred fifty-nine dollars). I have never smoked any other brand of tobacco but Edgeworth dur ing the twenty-three years. Tours very truly, -; ; ' (Signed) Chas. Bostock .. ; Justice of the Peace Eclgewor Extrd High Grade Smoking Tobacco til I' Notice to Seniors and Graduates All Seniors and Graduates who expect to receive degrees in June come by Suttons Drug Store any time between 1:30 and .4:00 or 6:30 and 9:30 on Wednesday or Thursday of this week and see if we have your name on our list. ' Also, all fourth year undergraduates and candidates for graduate de grees who DO NOT expect-to graduate please come by and have your name checked off the list. , : SENIOR INVITATION COMMITTEE . " . ' j ; . , r ... . . ...... ( ' ' Those who have not ordered their Commencement In- .- . . . '- - -.. . ' . . i vitations may do so during the hours mentioned above. L. C. SIMPSON. eodqnarters Sales. V. of Colorado , '25 yT. .... ' f ' 'A J. E. MOORE. Headquarters Sales, V. of Illinois, 25 't t,.J.CAHItX, Lighting Engineer, U. of Akron. '26 R. W. BUSH, V. of Southern California. '24 Commercial Lighting Specialist. Los Angeles Office. i i YO UN GEK C ON RECENT WESTING HOUSE J 6 B S H. E. LI PPM AN, Lighting Engineer, Penn State, '25 'I. A: YOST. Lighting Engineer, Penn State. '24 MM . F. C. WINKLER, Lighting Engineer, Notre Dame, .'18 JAMES D. REID. Lighting Engineer, V. of Indiana, '27 tnes Where do young college men get, in a large industrial organization? Have , I hey opportunity to - exercise creative talent? Is individual work recognized? MINES FIELD, Los Angeles, is. -famous as the scene of the 1928 International Air Races and Aeronautical Exposition. Equally famous among flyers is the perfect illumination which enabled pilots on the night pro grams to land with, all the, ease and assurance of ' those who did their 4 To blanket the field" with brilliance and yet avoid dangerous flying there by day. The result 'was an achievement in airport lighting: which has glare was the problem assigned to V been pronounced the most nearly the Westinghouse, engineers who perfect of any , in the United States. ,' ." The outstanding jobs go to organizations with-' the resources and facilities to handle them. Westinghouse, because of the out standing opportunities which are of almost daily occurrence within its organization offers strong at , tractions to young men of enter prise and ability who are anxious to make a mark in the world. designed the Mines Field lighting , for this greatest of air meets. Twenty-one huge floodlight pro jectors, each with a maximum beam candlepower of one million; ; provided the brilliance. An in genious system of louvre cutting off upward rays of light provided protection from glare at all times. 1 1 1 n AO .Am!3'i("Ti TfricS) rnrmnn g- z t Jt . VWV V 1 rf