Northeast High School - Nor Easter Yearbook (Kansas City, MO)

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IQor' easter THE CONSOLE. Among the many attractive models made in Joinery the Console. A Con- sole is a phonograph made in table form. The thing that determines wick phonograph, or any other make ot motor used. The Console made in Northeast High School is a 35350.00 model. lt is 22 inches wide, 40 inches long, and 34 CCut Loaned by Mr. Hifnerl what a phonograph is, is the name of inches high. Wle make our models the motor usedg for in-stance, an Edl- out of black walnut, although a very son phonograph. a Nfietrola phono- beautiful machine can he made of ma- graph, a Stemggla phonograph, a Bruns- hogany or quarter sawed oak. Our Cal laj IIN : ss. att wi lag an lt so til thc sei plz pla bo- C dry. E1 for 'ld kid 1 MXN sor fXn ext Tfhi nie .32 Cla: exp N gee ure ties per stri fou bloi eep ste: the the ord hov tiea tllI'4 nyo' d Q. dist nies Rl ulii sHC XXW1

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- K- '- '- '1' 1 T3 T7 ing, - 13,q,,.r..., .i ap.. .. ., 1 Q.. . , V ,, , , , and ick. ailing I, is gram. :cti-on J AC. go in ,irned the at B f DF. gram gram other wind :ctive Nhich pail is at CX- ward, f DF : sail. ial to g the which indic- to be riving nd to ich is de of wind vever, ie the rf the feithe ective 'M or' easter' 23 It will not be driven forward, how- ever, unless the rudder is turned in the direction R. The force of the wind against the sail will cause the boat to swing around and turn directly into the wind, if the rudder is not turned so as to guide the boat away from a path which will head it directly into the wind. If the tendency to turn is not overcome, the boat will be blown backward, since the sail is turned so that the wind can not blow against it. So, my friend, you see what can be learned in High School. And this is only one of the many practical applica- tions to any form of navigation that can be learned in High School. . . LE ROY SMITH, 125. ' CANDLESTICKS. The English language, enriched as it is with the contributions of the an- cients, comes to us surcharged with apt and expressive words. Not least of these is the word, candle, which brings to mind many pleasant associa- tions. Who can ever forget his first birthday cake- .with its few burning candles? Likewise viewing the cere- mony of lighting the Christmas tree so that Santa cannot fail to find the stockings is one of childhood's pleas- ant experiences. We see candles on the altars of churches, we see candles in homes and business offices when the electric light company declares a semi-holiday. In the days of our forefathers the candles themselves were home made, now that they can be obtained very cheaply this is no longer done. Instead we turn our attention to the candle- stick which may make or mar the ar- tistic effect of the whole. Would you like to make one for yourself? if so, you should take Turning. Northeast takes pride in teaching her boys and girls to use their hands as well as their heads, though it saves tempers and fingers when both work together. The first two things necessary be- fore the actual turning are the draw- ing or selecting of- a design and the choosing of the wood. VValnut and mahogany are the most' popular, a sllght preference being shown for the former, maybe because it requires less finishing. But do not ,think for a minute that we are prone to be lazy, you would not be either if Mr. Ellis were your teacher. The first mechanical part begins when the wood is cut by the band saw, the greatest precautions being taken to prevent the finger nails from being manicured at this time-an unpleas- ant sensation, I assure you, when done by a band saw. After the sawing, comes the centering and the boring of the candle holeiwhich-requires a keen eye and a steady hand. Next the up- right part of the stick is put in the lathe and the corners turned off. Then about an inch of the bottom -end is turned down to a specified diameter and glued into a hole in the base, which was bored for this- purpose. When the glue has set for twenty-four hours the object, for no other name suits it, is put in the lathe and turned to match the design as nearly as possible. , Then the candle- stick, for such it has become, is sand- papered. During this procedure too many 'amateurs take this opportunity to dream,.but they are rudely awak- ened by aburning sensation in the finger applying the sandpaper. After this experience they dream no more, but tell their minds to get on the job as Doctor Barker advised them to. Then the wood filler and shellac are applied, sometimes followed by varnish and pumice stone. ' But despite a few misfortunes, the candlesticks when finished are a de- light to the eye, of the maker at least, although the two sometimes may be somewhat dissimilar in appearance. Notwithstanding some minor injuries such as skinned knuckles, injured pride and shattered hopes, we have trans- formed a block oi' wood into a thing of beauty, and you know, a thing of beauty is a joy forever. ' V LINNEA HOLM.

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i- 1' 10 F 'H 1' -,H .sytzwrnevmsq fn,.4-asv,-+,,., i P ,,... 1 ake east Qt is 134 odels very t ma- Our OTP, QHSTQI' 25 cabinets cost us about 31500, the in- lay from 31.00 to 3500 and a good motor can be bought for 34000, so a 3350000 Console is made complete here at school for about 35000 to 36500. So-me of the pupils who are skilled with tools, prefer a great deal of in- lay and design the doors, the sides and the two front legs of the Console. It takes much extra time for inlaying, so the pupil must be a swift worker to finish this wonderful model before the end of the year. We are expecting several inlaid Consoles and several plain ones. We will have them on dis- play at the end of the Year, and every- body is welcome to come and see them. GERTRUDE BROUILLETTE. THE VELOCITY OF A BULLET. To every action there is an equal and opposite reaction. -Newton. One peaceful day'the students CH who .are in the north wing of the school heard a series of shots in room 207 during the fourth and fifth hours and possibly thought: 'VVhat is Mr. Pinkney doing to those poor kids now? Those who were in there could answer: We were only measuring the velocities of some bullets. Gee! but it was interesting. And this was one of the most interesting experiments we have performed this year. The two classes Cor, rather, Mr. Pinkneyj measured the velocity of bullets used in 22, .32 and .38 calibre revolvers. The first hour class was luckyg they didn't have to do this experiment. We had to develop the formula Cby geometryj: A ballistic pendulum Csee fig- urej was used. to determine these veloci- ties. This is a pendulum which is sus- pended from a beam on the ceiling by four strings or wires to which are attached the four upper corners of a block of wood. This block swings like any other pendulum, ex- cept that it is suspended by four strings in- stead of one. In fll'l'll11'f,' the velocity of the bullet we first had to find the distance the block M Csee fifjurej would fall. ln order to find this distance we have to know how much the center of gravity moves, ver- tically, from rest at C. When M moves through the arc AC. its center of gravity mpves a distance horizontally equal to d CABJ and vertically equal to S CBCD. The distance cl CAB is perpendicular to OCD is measured by a yardstick placed underneath M fthe pendulumj and by a s'nall block which is placed along the side of the yard- stick and which is attached to M at E. When the pendulum moves. it pulls this small block along the yardstick and thus meas- ures the distance. It will take M the same 'flme to move from rest at C to A as it will take M. to fall freely from rest at B to C. Now, since- we have found the distance M moves horizontally, we want the distance CSD that M falls in terms of 1 and d. 1 is the distance from the center of gravity of M to the point of suspension from the ceil- lllg- SO, by the corollary to the Pythagorean 7 I ,f f :f if fx f I ff f X . I f f ff 1 x X X f ' ff ll I ff 1 X 1 I f f If I If fbsx ' rl, ff ' Aff' NX! ff ,I l X CN I ff 7 XX XX, ' N f 21 I X I I I x I f,r , E ski' : X I s I N hx: E NN' xxg,,f X I l 'X 0 . l . -E! A ' 3 X C -s BALLISTIC DENDULUIVI Theorem fthe square of either leg of a right triangle is equal to the square of the hypot- enuse minus the square of the other legb, OBIVCIQ-d2j, also SZOC-OB. Substi- tuting in the equation SIOC-OB for OC and OB, we have S11-AV C12-d2J. By Galileo's law of freely falling bodies fthe velocity of an object equals the square root of two times the acceleration due to grav- ity ligj times the distance ISI through which it fallsj, VIVCZ g SD. Substituting fl-V C12-d2jfI for S, we have VZVIZ g Q l-VCI?-d2D H, which is the velocity of a pendulum passing through the point C after it has been displaced a distance d. According to Newton's third law of mo- tion Cto every action there is an equal and opposite reactionj, it is evident that the momentum of the bullet equals the momen- tum of the pendulum, and, since momentum is measured by the product of M-V, we have MV:mv, when M is the weight of the block, V the velocity of the block, m the weight of the bullet and v the velocity of the bullet. Then the velocity of the bullet Qquglg MV!m. Substituting VIZ g -ll- - 1 F ? '14 .f - ' :EEET 2if'fiiF,3.:-?