Breckland Scientific 2023 Catalogue

Heat & Energy

Thermal Conductivity

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1 LESLIE’S CUBE A classic piece of apparatus to demonstrate the variation in radiant heat output from different types of surfaces. The apparatus consists of a metal cube with a stoppered hole at the top for filling with very hot water. The four outward facing vertical faces have different surfaces; one each with dull black, shiny black, white, and bare metal finishes. Comparisons of the varying heat radiated from each surface can then be made, e.g. using an infrared probe, infrared thermometer, thermopile etc. Dimensions: 130 x 130 x 130mm. Cat No. Description Price Per HTC-350-100 Leslie’s Cube 42.18 ea. 2 LASCELLS LESLIE’S RADIATION PLATE This apparatus allows the demonstration of the dramatic differences in radiated heat from various surfaces. Being electrically heated, it is more convenient than some of the more conventional methods involving water or Bunsen flames. The apparatus contains a single aluminium plate divided into 3 different regions: a matt black section, a polished aluminium section and a roughened aluminium section. The plate is heated using a resistive element, ensuring that each section is at the same temperature. Readings of each surface may then be taken using an infra-red thermometer (not supplied). Connection to power supply is via 4mm sockets. The plate requires an adjustable 12V D.C. power supply capable of providing 1A continuously. Cat No. Description Price Per HTC-355-100 Leslie’s’ Radiation Plate 51.33 ea. 3 RADIATION CANS Place each of these three cans, identical apart from their surface colour, 50-70cm away from a bright bulb. A hole in the top of each can allows a thermometer or datalogging temperature sensor to be inserted. We reccommend setting your datalogger to take readings every second and, if possible, connecting a fourth probe to monitor room temperature. Students can easily determine the effect of surface color on energy transfer as they watch the temperatures rise, and subsequently fall, at varying rates. This experiment will also work if the cans are filled with water, although empty cans often work better. Set of three cans. Size: 153mm Height, 53mm Dia. Cat No. Description Price Per HTC-100-360 Radiation Cans 40.06 set 4 RADIANT HEAT SOURCE This Radiant Heat Source has been specifically designed for bench top use in heat and radiation experiments in Physics and offers a safer alternative to an open element heat source. The fully enclosed (apart from the output grille) steel case is earthed via the IEC mains lead and includes an illuminated on/off switch and carrying handle. The unit has a broad base with rubber feet for extra stability. Comes with a 2 year warranty.

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Leslie’s Cube

Leslie’s Radiation Plate

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Radiation Cans

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Specifications • Mains input: 230V nominal, 50 to 60Hz • Power: 0.3KW • Fuse: 3A-F • Output wavelength: 2.5 to 3.5 µm nominal • Dimensions: 192 x 171 x 235 mm (w x d x h) • Weight: 2kg • 2 year warranty Cat No. Description

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HTC-130-100 Radiant Heat Source

285.72 ea.

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Radiant Heat Source

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www.brecklandscientific.co.uk T: 01785 227227 | sales@brec landscientific.co.uk | F: 01785 227444