Physics-> Heat

1 [2] 3 4 5 [«Back ||Next »]   Click to Enlarge CONDUCTOMETER, FIVE ROD FORM For demonstrating the different heat conductivity of five metals by observing the melting of wax. Consists of five rods (l x d), 75 x 5mm of aluminum, brass, iron, copper, and stainless steel which are radially fitted on a brass disk of about 27mm diameter. Each of these rods have a cavity at the outer end for holding paraffin wax. The central disk is joined to an insulated handle by 125mm long plated steel rod. Overall length about 32cm. See Enlarge Click to Enlarge RING AND BALL APPARATUS For demonstrating the expansion or contraction of metals. Consists of two brass rods with insulated handles. One of the rods has a ring and the other one has a ball of approximate diameter 25mm, attached at the end. The brass ball passes through the ring when both are at room temperature, but when the ball is heated it expands and can not pass through the ring. See Enlarge Click to Enlarge COMPOUND BAR (COMPOUND STRIP) To demonstrate unequal expansion in different metals on heating. Highlights the role of temperature and materials in practical applications such as in thermostats. Consists of a laminated strip of two different metals fitted in a wooden handle. The strip is about (l x w), 200 x 10mm. Due to differences in the co-efficients of linear expansion of both metals, the laminated strip bends dramatically on heating. See Enlarge Click to Enlarge CALORIMETER, SET OF TWO For determining specific heat, heat of fusion and heat of vaporisation. Consists of two polished spun aluminum vessels, i.e. an inner calorimeter (h x d), 80 x 65mm and an outer calorimeter (h x d), 140 x 100mm. Includes a plastic ring for seating the inner calorimeter, a stirrer, and a plastic lid for outer vessel. The lid has two holes for the thermometer and the stirrer. Supplied without the thermometer. See Enlarge Click to Enlarge ELECTRIC CALORIMETER (CALORIMETER, JOULE) For determining the mechanical equivalent of heat by measuring the heat generated in an electrical resistance. Includes the calorimeter set of two described above. The plastic lid is fitted with a heating coil to work with 6V supply or a battery, two 4mm socket binding posts for electrical connections, stirrer with an insulated handle and a single-hole rubber stopper for inserting a thermometer. Supplied without the thermometer. Requires a suitable voltmeter, ammeter, and thermometer (not supplied). See Enlarge Click to Enlarge SPECIFIC HEAT SPECIMEN CYLINDERS SET For showing that when different metal cylinders are heated to the same temperature and immersed individually in an equal quantity of water, the rise in temperature of the water is directly proportional to the specific heat of the chosen metal cylinder. Individual cylinders can also be used for precise specific heat determination. Includes six cylinders made of aluminum, brass, copper, iron, lead, and zinc having diameters of 13mm. The length of each cylinder is adjusted so that all of them have the same mass. See Enlarge Click to Enlarge HOPES APPARATUS To show that water has a maximum density at 4? C. Consists of a sheet metal cylinder, with two tubes in the upper and lower regions for inserting thermometers through rubber stoppers. Mounted on a base and encircled midway by an outer trough for holding a mixture of ice and salt. Temperature of the water is measured at the top and bottom of the inner cylindrical vessel over a period as the water cools. Supplied without the thermometer. See Enlarge Click to Enlarge LIQUID EXPANSION BULB (EXPANSION BULB) For demonstrating and determining the coefficient of volume expansion of liquids when heated. Consists of a borosilicate glass bulb to hold 10mL of a liquid, in a capillary stem with a funnel at the top. The capillary stem is graduated to 0.5mL, subdivided every 0.01mL. See Enlarge Click to Enlarge AIR THERMOMETER BULB For the qualitative study of expansion of liquids, the principles of thermometry, and the rise and fall of a liquid column due to expansion or contraction of air in a bulb. Consists of a borosilicate glass bulb of diameter approximately 50mm with a 30cm long stem of 5mm bore. See Enlarge Click to Enlarge MELTING POINT APPARATUS For determining the melting point of solid substances. (upper limit 250?C) Consists of an aluminum cylinder (l x d), 50 x 63mm with a slanted hole of diameter 7mm on the top for inserting a thermometer. Can be heated on a burner. The substance to be melted is placed on the top of the cylinder. Melting point is noted when melting occurs. See Enlarge Click to Enlarge Absolute Zero Apparatus / Gay Lussac'S Law Determine the approximate value of absolute zero. Use this device to demonstrate the direct relationship of pressure and temperature of a constant volume of gas by measuring the pressure of a known amount of confined gas at several known temperatures. Includes a sealed volume connected to an absolute-reading pressure gauge, copper and brass immersible parts and 100 mm diameter bulb. You need a bicycle air pump and thermometer. See Enlarge Click to Enlarge Giant Solar Bag Yes, there's a serious side to this big bag of wind. It will help your class learn the properties of air and air pressure and the principles of density and buoyancy as affected by heat. After mere minutes in the sun, the air in our huge plastic bag expands enough to lift into the sky. Inflate it further by running, then tie off the ends and watch the bag rise silently. 50 feet long and 3 feet in diameter, it's as big as you can get. Can be cut into several smaller bags. Includes: instructions with class activities and student worksheets. You need string or line. See Enlarge Click to Enlarge Windbags Demonstrate the Bernoulli Effect. Who's the windbag in your group? Contrary to classroom opinion, one breath (and a scientific secret) is all it takes to inflate our 8-foot plastic bags. Learn the properties of air molecules and how they move. Includes 4 light, strong plastic bags and activity guide, colors may vary. See Enlarge Click to Enlarge Ball and Ring This popular demo of metal expansion and contraction consists of a brass ball and ring mounted on steel rods with wooden handles. At room temperature the ball passes through the ring; when heated it will not. Includes instructions. See Enlarge Click to Enlarge Thermostat Model Use this to demonstrate the action of a switch. When the bi-metal strip is heated, it will bend to open or close the circuit. Instructions. You need DC power supply, bulb, socket. See Enlarge 1 [2] 3 4 5 [«Back ||Next »] Go to Top