Heat Equipments
Ball & Ring

This brass ball and ring demonstrates thermal expansion of the metals. The ball passes through the ring freely when both are at same temperature whereas the ball will not pass through the ring when heated. Comprises of a 25mm dia brass ball and a brass ring both attached to separate wooden handles.
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Ball & Ring With Chain

This brass ball and ring demonstrates thermal expansion of the metals. The ball passes through the ring freely when both are at same temperature whereas the ball will not pass through the ring when heated. Comprises of a 25mm dia brass ball attached to the ring with a chain.
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Convection In Air Apparatus

For showing convection currents in air. Comprises of metal box, 220x100x100mm with a removable glass front, two chimneys and candle holder fixed to the base of the box beneath the left hand chimney.
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Crook’s Radiometer

For demonstrating the mechanical effect of reflection and absorption of light and heat. Partially evacuated glass bulb has four vanes which spin on low friction pivot. Alternate vanes are dark and white in colour.
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Heat Conductivity Apparatus

For demonstrating the rate of heat conduction in five different metals. The kit consists of five metal rods, approximately 20mm in diameter and 40mm long equally spaced on a brass disc and mounted on an insulated handle. The rods are aluminium, brass, copper, iron and steel and each having a cavity at the end for holding paraffin.
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Liquid Convection Apparatus

For demonstrating the phenomenon of thermal convection in liquids caused by temperature variation. Consists of a rectangular shaped borosilicate glass tube (w x h), 15 x 21cm with a funnel shaped opening at the top for filling liquids. When this tube is partially filled with water and heated at one corner after adding a dye or potassium permanganate crystals or saw dust or aluminum powder, the movement of colors or particles illustrates the formation of convection currents.
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Specific Heat Set

Set of six metal cylinders, diameter 20mm, of equal mass of aluminium, brass, copper, iron, lead and zinc. The cylinders are mounted in wooden stand and are drilled for suspension.
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