educational materials - SPECTRUM Nasco Shopping Mall Divisions

Physical Science
Nature of Heat
Radiometer
Partially evacuated glass bulb contains spinner with four
vanes, blackened on one side, silvered on the other. Turns
3,000 revolutions a minute in sunlight. Will also turn
under an incandescent lamp (100 watts or more). The
stronger the wattage, the faster it will turn. Detects and
demonstrates energy of heat radiation. Sh. wt. 0.17 kgs.
S00154M — $10.75
Heat Pack
Contains a super saturated
solution of water and
sodium acetate. Snapping
the metal disc creates a
chain reaction, causing
the solution to crystallize.
The crystallization process
gives off heat. Packs can
be recharged back to
the liquid state by immersing in boiling water
for 10—15 minutes and allow it to slowly cool.
Includes teacher’s guide. 4" x 4". Grades K—12.
Sh. wt. 0.44 lbs.
SB47058M — $8.30
Conductivity Bars
Although all metals conduct
heat, they do so at different rates.
This set, aided by liquid crystal
thermometers, demonstrates this.
Contains steel, brass, aluminum,
and copper specimens. Enclosed in
a plastic housing. Grade 6 and up.
Sh. wt. 1.25 lbs.
SB46988M — $38.40
Heat Absorption Apparatus
Used to study and demonstrate heat absorption. Consists
of two metal concave plates (one white and one painted
black) with thermometer holders on the back. In between
the plates is a lamp, which acts as a heat source. Turn the
lamp on to see which plate gets hot the fastest and which
plate stays hot the longest after the lamp is turned off.
Base dimensions: 7¾" x 7¾" x ½". Metal plates measure
3¾" dia. Total height of the unit is 5½". One bulb included;
thermometers not included. Sh. wt. 2 lbs.
SB47546M — $40.45
How Heat Flows —
Investigating Heat & Temperature Lab
Investigation
Gain an understanding of heat and heat transfer
through this series of hands-on activities. Measure
thermal conductivity and thermal expansion of various
metals; explore the methods of heat transfer, including
conduction, convection, and radiation and determine
the specific heat of various substances. Using the included
calorimeter, students will determine the heat of
fusion of ice. Your class will also observe a demonstration
of heat transfer using a radiometer and investigate
heat and phase changes of matter. They’ll apply this
knowledge to identify substances that conduct heat
effectively, known as conductors, as those that do not,
termed insulators. Students will use their experiences
to relate these characteristics to differences between
heat and temperature. Sh. wt. 1.61 kgs.
SB37368M — $111.85
RF Microwave Meter
Accurate, reliable environmental
measurement instrument. Evaluate
the RF (Radio Frequency)
emissions of mobile phone, radio,
and TV transmission towers
as well as wireless cameras, Wi-Fi
and Lan detection and installation,
microwave oven leakage,
and other environmental safety
concerns. Measures the range
of electromagnetic frequencies
above the audio range and
below infrared light. Features
maximum and minimum hold,
an audible alarm, and a zero
adjustment to eliminate background EMF. Comes with
a soft carrying case and standard 9V battery for approx.
100 hours of use. Dimensions: 5¼" x 2¼" x 1¼". Grades
9—12. Sh. wt. 2.25 lbs.
SB47708M — $246.05
Metals Transfer Heat:
Conductivity Apparatus
Discover which metal is the best conductor of heat! Test
thermal conductivity in metals using an Edser conductivity
apparatus. Copper, brass, bronze, steel, and stainless steel
rods are mounted vertically to a cylindrical base. As apparatus
is heated students will observe and measure the obvious
variances in temperature between the different metals.
Preassembled. Grades 7—12. 5” L x 8½” H. Sh. wt. 2.49 kgs.
SB40793M — $42.80
Thermoelectric Generator
Demonstrator
Bring the Second Law of Thermodynamics to life using
this device that can act as a refrigerator or a heat engine.
Immerse the two aluminum legs in baths of different
temperatures, and produce electrical energy that turns
the turbine! Unplug the banana jacks and measure the
voltage output with a multimeter. Grade 4 and up.
Sh. wt. 1.25 lbs.
SB48266M — $38.05
IR Thermometer
Simply hold the IR gun, press the trigger, and aim the
laser guide at the target. Results immediately appear in
°C or °F on the large backlit LCD and are automatically
held for seven seconds after the trigger is released. Auto
power off. 9V battery operation (included). Range is -4°-
518° F. Accuracy: ±6° F. Dimensions: 8" L x 3" W x 1¾" D.
Sh. wt. 0.51 kgs.
SB40820M — $59.45
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