Wonder of Modern Science: including wireless telegraphy

              WONDERS of MODERN SCIENCE
Including
Wireless Telegraphy

A doctor in the audience is pressing the button on the little transmitter and in this way is firing the cannon upon the platform by WIRELESS TELEGRAPHY.


Lecture by W. J. CLARKE
The well-known Electrical Engineer of New York City



WONDERS of MODERN SCIENCE
WE again have the pleasure of presenting MR. W. J. CLARKE, of New York city, in his lecture on Modern Scientific Wonders. The lecture involves an elaborate equipment of apparatus and the aid of an experienced assistant, all of which makes the lecture somewhat expensive.  But when you read the snyopsis of the lecture, and realize what a series of experiments is furnished, you will be astonished that we can offer such a lecture for such a price.  Last season MR. CLARKE filled ninety-nine engagements for us and the testimonials which we have received from the committees, as well as the press clippings, have been highly complimentary. —The Bureau.



SYNOPSIS of LECTURE
MR. CLARKE avoids entirely the use of all such technical language as would not be clearly understood by those in the audience who have no knowledge whatever of the subject, and he illustrates nearly all of his explanations by the use of a large quantity of apparatus that has been especially built for this lecture in his own private laboratory.  This seems to be the secret of MR. CLARKE'S great success and popularity as a scientific lecturer, for not only is the audience able to enjoy the rare treat of seeing a long list of experiments that have been but seldom before seen outside of such laboratories as Edison's and Tesla's, but they are able at the same time to understand how the experiments are performed, and to see what the discoveries promise for the future comfort and happiness of mankind.



MAGIC THAT HERMANN NEVER DREAMED OF
THE X RAY

Figure


MR. CLARKE usually commences his lecture with this ever fascinating discovery of Professor Roentgen.  One of the most complete X Ray outfits ever constructed is used to illustrate the subject, and volunteers are invited to come upon the platform and examine the bones of their hands with the aid of this wonderful invisible ray.



ELECTRIC WELDING

Figure


This new process, which is fast supplanting the old and time honored blacksmith's shop, is shown in full operation.  For years it was supposed that such metals as brass and iron could not be welded together, but MR. CLARKE not only shows how easily this is now done, but he also shows how a rod can be made up of a number of different metals neatly welded to each other.  The intense heat and light produced, and the extreme rapidity and cleanliness of the operation, makes this feature of the lecture of special interest.




LIGHT OF THE FUTURE

Figure


For a long time scientists have felt that the present systems of electric lighting are altogether too costly and otherwise objectionable.  By the combined efforts of such men as Moore, Tesla, Cooper Hewitt, and others, a new light has been produced which it is confidently believed will be the the only means of illumination in use before long.  MR. CLARKE has a complete equipment for the production of this light, and where the local conditions are such that he can do so, he illuminates the entire platform with it to the great surprise and delight of the audience.



WIRELESS TELEGRAPHY
At the present time when Marconi has just about completed his almost superhuman task of transmitting messages through the air across the Atlantic ocean, this portion of MR. CLARKE'S lecture cannot fail to excite the deepest interest.  MR. CLARKE is a personal friend of Mr. Marconi, and his equipment of wireless telegraphy apparatus is such as has never before been built in this country. The transmitter is so compactly arranged that it can be carried around amongst the audience and anyone that wishes to is given the opportunity of pressing the button and transmitting signals to the platform.  Not only are messages transmitted and received upon the bell and paper tape, but a large size model locomotive upon a long track, is started and stopped at will, being under perfect control from the transmitter.  A group of electric lights are lighted and extinguished in the same way.  A fire alarm is sounded.  A phonograph is started and stopped so that it carries on a conversation, and a cannon is discharged by a single touch on the distant transmitter.  This last is clearly shown in the front page illustration.



HIGH TENSION EXPERIMENTS

Figure


Until recently a tension of five thousand volts was considered a very high and dangerous current, but it has been found that there is really less danger in handling currents of a tension of ten thousand times this amount.  MR. CLARKE'S apparatus produces a tension of millions of volts, and when the long and brilliant sparks flash out with a roar before the astonished audience, there is none that do not experience a feeling of awe in the realization of how easily we can now handle such enormous forces of nature. MR. CLARKE reproduces with this apparatus many of the now famous experiments of Nikola Tesla, each of which carries with it not only beautiful effects, but also what would have been looked upon a few years since as the highest art in magic.



READ THIS CAREFULLY
MR. CLARKE is a scientific author of note and is also a member of the American Institute of Electrical Engineers, an institution into which only electrical men of the highest qualifications can enter.  He is thoroughly conversant with all electrical apparatus and systems, and therefore the management of opera houses and halls need feel no hesitation in complying with any of MR. CLARKE'S requests as to the supply of current, etc.  For the presentation of the experiments at their best, an electric current of about fifteen or twenty amperes is required upon the platform, and in cases where current is not already in the hall, it will pay committees to arrange with the local lighting company for a supply for the evening.  In places where electric current cannot possibly be supplied MR. CLARKE uses battery current, and re-arranges his lecture to suit the existing conditions, and while some few of the experiments have to be abandoned in such cases, we wish to say for MR. CLARKE, and his ability to adapt himself to circumstances, that we have received some of his best testimonials from just such places.  In addition to the outline that we have given of the lecture, MR. CLARKE often adds new features during the lecture season, these features being the result of some new discovery in the scientific world, and the fact that MR. CLARKE is in close touch with all the leading scientists, and has free access to their laboratories, places him in a position to hear of new discoveries long in advance of all other lecturers in this line.  Of course where such new features are added, some other experiments have to be left out, but as MR. CLARKE always has in view the pleasing of the audience, his re-arrangement in such cases is invariably an improvement.




SOME FEW TESTIMONIALS
VERMONT:—It was the general opinion that the lecture was one of the best ever given here.—Paper, Barre, Vt.

KANSAS:—Your lecture was simply the best thing of its kind that I have ever listened to.—Carl Swenson, President Bethany College, Lindsboro, Kansas.

MICHIGAN:—MR. CLARKE gave a very interesting lecture, fully illustrated by experiments.  MR. CLARKE as a lecturer is surely a success.—J. H. Hutchins, M.D., Secretary, Bancroft, Mich.


CANADA:—The auditorium was filled last night by an audience that highly enjoyed MR. W. J. CLARKE'S lecture on Wireless Telegraphy and other modern scientific wonders.—
London (Can.) Free Press.

NEW YORK:—Your lecture on wireless telegraphy and other modern wonders, which was up-to-date in every respect, certainly was heartily received by your large audience here, and proved a strong number for our course.  We hope to welcome you here again.—Gray and Russell, Lecture Committee, Greene, N. Y.


MASSACHUSETTS:—Although the subjects touched by MR. CLARKE are not usually regarded as being of a humorous character, the speaker managed to keep his audience in good humor during his address.  It is not altogether easy to explain matters of such a technical character to a popular audience, and yet MR. CLARKE did so very successfully.—
Worcester (Mass.) Telegram.


MICHIGAN:—MR. CLARKE held his audience enthralled from the time he began until the last word was spoken.  An elaborate equipment of apparatus, with which many scientific experiments were performed, was of absorbing interest.—
Traverse City (Mich.) Eagle.


OHIO.—DR. CLARKE'S lecture on Modern Scientific Wonders was highly interesting and pleased the large audience.  His lecture included Wireless Telegraphy and Liquid Air, the former being especially pleasing to the audience.  Altogether the lecture was highly appreciated, and was thought by many to be the best one of the course.—
Bowling Green (Ohio) Sentinel.

NEW YORK:—The lecture given by MR. W. J. CLARKE was thoroughly appreciated by a large audience.  MR. CLARKE'S explanations were exceedingly clear and lucid and understood by everyone, and his experiments were highly interesting.  I take great pleasure in recommending this entertainment.—Richard A. M. Deeley, Manager Hendrick Hudson G. A. R. Hall, Hudson, N. Y.


MASSACHUSETTS:—The people who attended the closing attraction of the Gardner Institute last night were well repaid for their effort in wading through snow.  W. J. CLARKE, of New York, explained wireless telegraphy in a very pleasing way, and the people in the audience were given an opportunity to transmit sounds.  Pressing a button on the transmitter caused a bell to ring on the stage with no connection other than the electrical waves in the air.—
Gardner (Mass.) Journal.


MINNESOTA:—A large audience at the Lyceum Theatre listened to an interesting lecture on Wireless Telegraphy by MR. W. J. CLARKE, a famous electrical engineer of New York.  They also saw experiments which were wonderful to behold.  Dealing with one of the most intricate of subjects, MR. CLARKE placed it before his audience in such a manner that those unused to scientific problems had no difficulty in understanding the workings of wireless telegraphy.—
Minneapolis (Minn.) Times.

MICHIGAN:—PROF. CLARKE gave excellent entertainment, both interesting and instructive.—(Prof.) Samuel Dickie, Albion, Mich.

PENNSYLVANIA:—The lecture was well delivered, brim full of information, and pleasing to the most competent critic.—G. T. Cooper, County Superintendent, Lewistown, Pa.

MICHIGAN:—Your lecture was received enthusiastically by our people, and the wireless telegraphy especially was the theme of favorable comment for a long time.—F. D. Smith, Greenville, Mich.

PENNSYLVANIA:—MR. CLARKE is a cultured gentleman, and has a very pleasant address, and distinct enunciation, so that every one could easily hear him.  It was a rare treat we enjoyed in Darlington.—Pastor Darlington (Pa.) Presbyterian Church.


CANADA:—At Massey Hall some twelve thousand people heard a lecture and witnessed experiments which they will never forget.  The wonders of electricity were explained and illustrated by W. J. CLARKE.  The entertainment lasted until after eleven o'clock and was greatly enjoyed by the thoroughly cultured audience.—
Toronto (Can.) Daily World.

NEW YORK:—Your entertainment proved in every way, not only satisfactory, but to be one of the most interesting entertainments on our course.  With no exceptions at all the expressions from your audience were most complimentary and enthusiastic.—B. E. Farnham, Dunkirk, N. Y.


MICHIGAN:—The number of the People's lecture course was of so excellent a nature as to assure the complete success of the entire course.  PROF. CLARKE'S lecture on Wireless Telegraphy was one of the rarest treats ever heard in this city.—
Owosso (Mich.) Argus.


MISSOURI:—MR. W. J. CLARKE gave an exhibition of the wonders of wireless telegraphy in the auditorium of the First Christian Church last night.  Some of the tests were astonishing, and the explanations offered were necessary in order to relieve the mind of any idea of legerdemain.—
Sedalia (Mo.) Daily Capital.

NEW YORK:—I have yet to find a person who was not pleased, entertained and instructed by your excellent lecture.  Some have said that they considered it the most valuable entertainment of our course, which is certainly high praise when one takes into account the splendid talent that we have had here.—A. G. Jackson, Waverly (N. Y.) Y.M.C.A.


CONNECTICUT:—W. J. CLARKE'S lecture on Modern Scientific Wonders delighted the patrons of the people's course.  The experiments in wireless telegraphy excited the greatest interest.  With the transmitter in his hand MR. CLARKE walked around the platform and transmitted messages to the receiver, ringing a bell, lighting and extinguishing an incandescent lamp, starting an electric car, igniting powder and operating a phonograph.  The lecture was a decided success.—
Winsted (Conn.) Citizen.


WISCONSIN:—The lecture by W. J. CLARKE was on scientific subjects, and some of our people went with a feeling that it might be too difficult for those who had not studied those subjects to understand.  But such was not the case.  The illustration of experiments, and MR. CLARKE'S pleasant manner before an audience, made it interesting to all.  The lecture was certainly all that was claimed for it, and MR. CLARKE and his experiments will be pleasantly remembered by those who heard him.—
Whitewater (Wis.) Gazette.