2009 Numeric Coop Catalog 850 Section Page 10 of 15
Item # Subcategory Name Description Brand/Model Bid Price
Unit
Name
Order Quantity
850655
Pipettes, Dropping
Bottles \\& Stirring Rods Stirring Rod
12 per package. 150mm length, 5mm diameter. Flint glass with both
ends rounded and fire polished. WLS40097-BB $1.42 pkg
850660
Pith-Like Balls \\& Ball
\\& Ring Apparatus
Pith-like Balls With Suspension
Cord
6 per package. Natural Pith Balls on String. Approximately 1/3"
diameter. Ultra-light and ultra sensitive. Ideal as replacements or for
electrostatic demonstrations.
565064 $1.61 pkg
850665
Second Law of Motion
Apparatus \\& Wheel
\\& Axle
Second Law Of Motion
Apparatus
Demonstrates that 2 balls will strike the floor at the same time even
though their paths of flight and horizontal velocity components are
different. Illustrate that the vertical acceleration (gravity) is equal,
causing the balls to fall at the same rate. Contains: base, spring plunger,
2 steel balls (1 solid, 1 pre-drilled) and a 6-page instructional booklet.
Glakad Science 1809
564700 $12.63 each
850670
Pith-Like Balls \\& Ball
\\& Ring Apparatus Ball And Ring Apparatus
Demonstrates expansion and contraction properties of metals. When
both the ring and the ball are at the same temperature, ball easily passes
through the ring. Ball will not pass through the ring after being heated.
Similar effect can be seen when the ring is cooled. Well-suited for
introductory physics or science classes at the middle or lower school
levels. Wooden handles insulate from heat. 7-S41702 $4.85 set
850675
Heat Transfer \\&
Friction Rod Kits Heat Transfer Kit
Demonstrates the transfer of heat from objects and materials having
different temperatures. The two insulated containers have foam lids and
mounted thermometers. Also includes aluminum bar.
Science Source 16215
589695 $10.64 kit
850680
Heat Transfer \\&
Friction Rod Kits Friction Rod Kit
An assortment of friction rods and pads for electrostatic experiments.
Demonstrates the generation of electrostatic charges. Includes 3 friction
rods (hollow glass, solid acrylic and hard rubber) and cotton, fur and
silk pads.
RM Ind 16131
590058 $13.23 kit
850685 Magnets Neodymium Magnet
Cube, 10mm side. Rare earth magnet has a much greater field strength
and a much higher resistance to demagnetization than other magnetic
materials. The maximum magnetic energy NdFeB can deliver ranges
from 26 to 48 Magagauss-Oersteds. Maximum values for Alnico and
ferrite (ceramic) are 7.5 and 3.5MGOe respectively. WLS44377-70 $1.61 each
850690 Magnets Bar Magnet - Alnico
Strong magnet for laboratory demonstration work. Painted red with
north pole marked. 150mm x 19mm x 17mm. Uniscience 3106-06 $8.40 each
850695 Compound Bar Compound Bar
Demonstrate Expansion of Different Metals. Because the coefficients of
linear expansion for brass and steel are different, the 20 x 1.25cm bar
curls in a surprising fashion. Rugged wooden handle, 30.5cm long
overall. Requires heat source, not included. WL1663 $2.15 each
850700 Radiometer Radiometer
Introduce light to heat energy transfers with this device. The vanes,
which are blackened on 1 side, delicately pivot in an evacuated bulb,
then rotate swiftly when exposed to heat radiation from sunlight, flat
iron or similar heat source. 2.5W x 5H.
United Scientific
RADIO1 1008707 $5.44 each
(43 paginas)
(15 paginas)
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