Product Overview
Heat Absorption & Radiation Comparator
Used to demonstrate the phenomenon of heat absorption and radiation between different surfaces (reflective vs dull) and heat generation/energy loss (i.e., efficiency) of different kinds of light bulbs (LED vs filament). Use with two thermometers such as catalog Item No. G-873000 (NOT included). Input: 12 V DC from two lantern batteries or a power supply.
Heat Conductometer with Wax
A device for demonstrating the rates of heat conduction in 5 different metals. Rods of Copper, Brass, Steel, Aluminum, and Nickel extend in a star-shaped configuration from a brass hub. Each rod has a cavity at the outer end for holding paraffin wax (included) or a match head. Heating the brass hub in a Bunsen flame will cause wax to melt (or the match head to ignite) in the cavities of different metals at different times, implying their different thermal conductivities. Fitted with a steel supporting rod ending in a wooden handle.
Liquids Convection Apparatus
For demonstrating movement in liquid currents caused by differences in temperature. Consists of a rectangular-shaped glass tube, dimensions (h × w): 200 × 170 mm, and 15 mm O.D., with an opening at the top for the introduction of water. In use, a dye or cork dust is placed in the water. When the lower part at one corner is heated, convection currents are set up in the water; the movement of the dye or cork dust makes the currents readily visible.
Gases Convection Apparatus
Convection currents produced by a candle may be simply demonstrated with this apparatus. Popular with teachers and students alike, this demonstration is also known under the name “convection pinwheel” or “candle-powered pinwheel.” Consists of a chimney, dimensions (h × d): 110 × 51 mm, base (h × d): 25 × 63 mm, metal pinwheel assembly, and a candle. When a lighted candle is under the chimney, the pinwheel will spin fast, and the convection current will be clearly apparent.
Important: Position the candle so that the flame does not come in contact with the base or the chimney. Operate for a short time only. Never leave unattended. The metal pinwheel will be very hot after the experiment.
