Valley Stream North High School - Chariot Yearbook (Franklin Square, NY)

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i lil 0 zz' cl l Mr. Bernard Mann - Science Mrs. Carol Soloway - English . 5 2 I lu Mrs. Jean Kalz - Business A Mr. Joh I . , 9 5 as Qx 14 H Mr. Ralph Jansson - Mr. Roberl Monck - Social Sfudies Physical Educafion -fi. Mr. Paul Rosenberg - Physical Educa+ion Ja Ill M r. Joh-n Mr. Roberf Burns - Physical Educa+ion Mrs. Louise Scanlon - Ma+h

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Q Q , , rv, e 4. 5,-. wifi - , , Mrs. Lenore Zelclow - English Mrs. Bellina Silverman - Ari Chairman 4 wwe-,Q l - 1 l l l 1 X f Ii 2 fi E Mr. Sherman Pohl - Physical Educa+ion Chairman l v.v.f ' H-pQ l L' ,i,.r 'S 9 5' Miss Sheila Schoor - Arl' Mrs. Elinor Enfelis - Mr. John Blaney - Miss Maureen Laflerly - Chemis+ry Ma+h Mafh 109

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Mr. Tasos Yacalis - PsychologisT Miss BeaTrice L. CoTTone - Language Mrs. Norma Klayman - Language wx' , XX I Mr. RoberT Driscoll- MaTh l We ri Ml l'm going To Talk TasT so geT your ears Tuned. 25mls oT a gas are collecTed by waTer displace- menT in a Tube. The waTer level in- side The Tube is 6.8mm below The level oT The waTer ouTside. Baro- meTric pressure is 770mm . . . TemperaTure is 20 C. CalculaTe The volume oT The dry gas aT 700mm and 50 C. Jake is going To Try his hand aT iT up aT The board. I cannoT do iT. AT leasT Till in Pl. P2, TI, T2, VI, V21 righT? fgoes up To The board, sTudenTs do.problem on Their ownj CalculaTe The volume oT The dry gas under The new condiTions. Dry gas . . . Qagain class Talks amongsT Themselves and Try To calculaTe answerj Could you explain some- Thing? Yes. The signiTicance oT dividing by I3.6, isn'T ThaT when you iusT have mercury in waTer? fsTuclenTs chime in To answerj All righT, people. You have a baromeTric reading . . . righT? ouTside. Now, how are you going To geT inside ThaT eudiome- Ter Tube and measure The pres- sure fno answerj You can'T you have To measure iT indirecTly. ln oTher words you have an ouTside pres- ?ll sure and Trom ThaT you can de- duce The inside pressure. IT The level inside and ouT were exacTly The same, whaT conclusion could you draw? The pressure's The same. The pressure's The same okay. BuT The pressure inside is lower. ThereTore whaT conclusion ll Q.. You said The waTer level is lower? The waTer level is lower on The inside oT The Tube Than iT is ouT- side. The pressure's greaTer. All righT, so whaT conclusion can I . . - The pressure's greaTer. On whaT? The inside. On The Trapped air. Yeah, righT. BuT how much greaTer is your problem. l-low will you measure ouTside pressure - how will you Tind iT? Qsporadic Talkingj I-low are you going To equaTe millimeTers oT waTer wiTh millimeT- ers oT mercury? Divide by i3.s. For every drop oT waTer, a drop oT mercury is I3.6 Times heavier. So if you have enough pressure To push up . . . To push down on waTer 6.8mm you 'have To equaTe This To how much pres- sure . . . If Il