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Teaching materialJeulin specializes in teaching materials for education (Physics, Chemistry, Life and Earth Sciences) and Technology in primary, secondary and higher education.
Laboratory equipment
Teachers, companies or individuals, choosing Le Laborantin is to trust the specialist in laboratory equipment, structured around a team of professionals in the sector.
Measuring equipmentFrench specialist in test and measurement instruments. We select our products from the biggest brands in the sector to offer you and guarantee the best of measurement.
Optical material
Specialized in the design, manufacture and supply of optical teaching materials for Higher Education, Ovio Instruments has been pursuing its primary vocation since 2007.
Calorimetry is the field of thermodynamics devoted to introducing the concept of heat. The calorimeters we offer will allow you to study changes of state in water (boiling) and heat exchanges between two bodies. In this context, students will study the principle of the equality of heat exchanges by carrying out the experiment of thermal equilibrium.
A calorimeter is a device that provides thermal insulation in order to minimize exchanges with the outside, and an electrical resistor supplies the energy needed to heat a volume of water. Entry-level calorimeters exist, such as the small model (Ref. 251080), which uses a simple insulating layer of polystyrene. For more demanding needs, such as precisely calculating specific heats or carrying out chemical reactions (enthalpy), it is preferable to use Dewar-type calorimeters (Ref. 253081), which consist of a double glass wall with a vacuum in between for much more effective insulation. This type of calorimeter also makes it possible to determine thermal inertia, the heat capacity of the calorimeter, the variation of heat with consumed current, and the variation of heat over time.
Students can study several concepts, such as the quantity of heat, the specific heat or mass heat capacity of water or any other type of material using material cylinders (Link: Study of Density and Volume | Jeulin), as well as the latent heat of fusion of ice. Concerning water, the notion of the calorie can then be introduced as the amount of energy required to raise the temperature of 1 g of water by 1°C.
