Overhead Projection Series Comp~ledby
HUBERT N. ALYEA Princeton Universjty
1
S.D-17-SIMPLIFIED the origiiml basic TOPS ith which 1500 experibe carried out, have igiwd t o simplify con~ctton,using 43 standard parts, 11 of
menting Procedure.
Hold the two
n t k to be joined inclined so that a drop
'lexiglas cement will run d o m the Vt a t their point of contact. After ding the drop, hold firmly for 30 seconds. s. For E-I, bend the T.7-tube s r n w t l ~ [ling it r i t h sand, then heating. For cut t m nutehes ~ in buttnm of center ~ I O Tpassage of mid. H-3 replace8 devices C-g, H-2, and H-3. M p alve has % lmgitudinal hole and is with an ()-ring t o the plastic t.op PARTS FOR SIMPLIFIED TOPS KIT
TOPS KIT (s-TOPS) AA -dmhol burners (4X ) BE--84". culture tubes ( 3 x 1 CC-sin& strength glass plate 5'1, X 5 in. (:3X) X '/*in. 111)-asbestos, 5 X E G 5 ft. x a/4 in. electri~alplastic tiqw FF-large rubber hand, in. \vide
Black Plexiglas X 'I2in. F ( 6 pieces) 4'14 X '12 X ' / a in. G ( 8 pieces) 4'/< X X I/* in. H (13 pieces) 3'1s X 'I4 X 'I2in. I ( 8 pieces) 5 X I t / %X in. in. J (5 pieces) 5 X a/4 X in. X 'la K (3 pieces) 11/2 X 1, (8 pieces) a/* X X ' / A in.
E (5 pieces) 5 X
Other Parts hI~~-E-lasembly with 1)PI)T switch, :3 position with center d? X-pohity indicator charger, 9 Volt. ( 2 X ) 0-hattwics P-Cu-l't spiral ( 2 X ) (J-Cu Xo. I6 ~ p i r a l It-l't No. 2'2 spiral ( 2 X ) S-Cu No. 28 enameled 'I-U-tube, plastic S/,t-in. a d . U-G-1 a.ssembly, No. 0 stopper V-g~~sholders (2 X) IT-G-4 assembly with fish valve X-..4-in. culture tubes cut from I'vres
+
variable resistance JJ-Shurite Panel Meter No. 850, 0-3 volt I),C., Cat. No. 810'2 Z KK-Me.volt, assembl? IJ--electrodes of Zn, Al, PI,, Mg for
nectmg tube 00-Mp box aswmbly 1'1'-Mp J-tube QQ-Gas thermometer bulb, g l a s All subsequent demonstrations in this series will be described using these simplified tops devices.
:
SPECIAL PARTS FOR BASIC TOPS Kll
Volume 40, Number 8, August 7 963
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A575
&ASIC KIT-SIMPLIFIED
A576
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Journal of Chemica'i Education
TOPS DEVICES
