Breckland Scientific 2023 Catalogue

Materials

Properties of Materials

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1 LASCELLS HOOKES LAW This apparatus from Lascells provides a robust and convenient method of verifying Hooke’s law. Unlike many other versions this apparatus is designed to allow students to investigate single springs and spring combinations in both series and parallel. The apparatus gives sensible single spring readings using only 100g. The apparatus is supplied with a robust hanger and pointer, a clear scale and 3 springs. (Clamp stand, boss and masses required but not included.) Cat No. Description Price Per MTR-215-120 Lascells Hookes Law 36.67 ea. 2 HOOKE’S LAW SPRING SET Set of five springs, each with a different spring constant, for in-depth investigations of Hooke’s law experiments. Springs range from 8 to 10 mm diameter and 58 to 66 mm length (including end loops). The five spring constants and corresponding weight limits are:

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10g/cm & 100g 20g/cm & 225g 50g/cm & 550g 100g/cm & 1100g 200g/cm & 2200g Cat No.

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Lascells Hooke’s Law Apparatus

Hooke’s Law Spring Set

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Related Products... For the full range of springs please see SPRINGS

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SPR-350-050 Hooke’s Law Spring Set

3.40 5pk

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3 FLUID PRESSURE APPARATUS Also known as the ‘Spouting Cylinder’. For demonstrating the increase in pressure of a liquid with an increase in depth of the liquid column. Made from painted metal sheet, with three spouts of the same size but at different heights down one side. The lower the spout, the higher the pressure will be when the cylinder is full of water, so the greater the distance the water will spurt out. Cat No. Description Price Per HPL-200-100 Fluid Pressure Apparatus 22.64 ea. 4 LIQUID LEVEL APPARATUS Apparatus for demonstrating that the liquid level in communicating (connecting) vessels remains the same, irrespective of the shapes and sizes of the vessels. Comprises four glass tubes, each of different cross-sectional size and shape, connected together at the bottom to a common horizontal glass tube (manifold) and mounted on a stand. Liquid volume 40ml max. Dimensions: 21.5 x 8 x 14cm approx. (l x w x h). Cat No. Description Price Per HPL-250-100 Liquid Level Apparatus 27.82 ea. 5 MAGIC SNOW This remarkable material is a form of polyacrylamide. It is capable of absorbing many times its own weight in water but, unlike other hydrogels, it expands rapidly when it gets wet to form a snow-like mass. Injected into a stream of high pressure water, it emerges as the high pressure snow seen on TV and film sets. It is non-toxic and re-useable. As a rough guide to quantify what this snow will make; one handful is enough to make 1 bucket full of snow. supplied in a pot of 100g. Cat No. Description Price Per SMP-350-100 Magic Snow 9.28 100g 6 THERMOCHROMIC SHEET A good example of a ‘smart’ material, this self-adhesive plastic sheet material contains liquid crystal ‘ink’, which changes colour when heated above 27°C. Potential applications are many and varied e.g. temperature indication/warnings, body jewellery, displays. Try attaching a resistance wire (nichrome) to the back of the sheet, then pass a small current through the wire to produce dramatic colour change patterns. Supplied as a 150 x 150 mm sheet. Can be easily cut to size, as required. Cat No. Description Size Price Per SMC-450-100 Thermochromic Sheet 150x150mm 7.18 ea.

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Fluid Pressure Apparatus

Liquid Level Apparatus

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Smart Materials

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Magic Snow

Thermochromic Sheet

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