Physics & Electronic Laboratory Apparatus Archives - Page 9 of 58 - PVG INTERNATIONAL

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To demonstrate that in the absence of atmospheric pull, bodies of different masses and density fall through a given distance in the same time. Comprises a borosilicate glass tube of size 600 x 25 mm, fitted with rubber bung at both the ends, one solid and other with a hole to carry a brass tube and 6 mm diameter rubber tubing for connection to a vacuum pump. A Hoffman clipis used on pressure rubber tubing. Inside the tube is a guinea generally a small coin and a feather. In air, the guinea and the feather fall at different speeds due to air resistance. To show this, turn the tube upside down so both items fall from one end of the tube to the other. The guinea will fall much faster than the feather because it is affected less by air resistance. (The feather has a greater surface area which comes in contact with the surrounding air). Turn the vacuum pump on and expel as much air from the tube as is safely possible. When you have done this, tighten the Hoffman clip and turn off the pump. Inside the tube you should now have a near vacuum. Turn the tube upside down once again and you will see that the guinea and feather arrive at the other end at the same time. With no air in the tube, both objects fall at the same speed as there is no air present (therefore no or negligible resistance) to affect their descent.

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Physics & Electronic Laboratory Apparatus

MS-177 PVG GUINEA AND FEATHER TUBE

Demonstrate that objects in a vacuum fall at identical speeds regardless of their weight. Consists of a break-resistant acrylic tube 26” long and 1.5” diameter, expansion plugs, metal disc, feather, stopcock for vacuum connection, and a tripod base.

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Physics & Electronic Laboratory Apparatus

MS-178 PVG FREE FALL APPARATUS

Comprising two glass tubes 225 x 8 mm. length x bore, one closed at the top other open, connected by means of rubber pressure tubing of 1 m. length 10 mm. outside diameter x 5 mm. bore, both mounted on the adjustable sliding metal brackets which can be locked in any position on the support rods fixed on the heavy stable iron base. Polished wooden stand 1.05 m. high, carries a wooden scale graduated 0-100 cm. with millimeter divisions in the centre and figured every 1 cm. up either side. Supplied without mercury. l Also available with wooden base in the shape of trough

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Physics & Electronic Laboratory Apparatus

MS-179 PVG BOYLE’S LAW APPARATUS

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Physics & Electronic Laboratory Apparatus

MS-18 PVG INCLINOMETER

This apparatus is for demonstration the volume of air enclosed in the column. Comprises a vertical glass tube of wide bore mounted on side of scale graduated 0- 60 cm. fitted on wooden base having plastic feet. This glass tube is connected to cylinder metal reservoir by a pressure tubing and stopcock. Reservoir is connected to dual2 2 scale pressure gauze reading 0 - 4.2 kg/cm and 0 - 60 lb/in above and side to a riffled inlet with stopcock for connection to foot pump. As the pressure in the oil reservoir increases, colored oil is forced into the glass tube and volume of the contained air and its actual (total) pressure are noticed. Size of base 235 x 145 mm. Overall height of apparatus 750 mm. Supplied without oil.

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Physics & Electronic Laboratory Apparatus

MS-180 PVG BOYLE’S LAW APPARATUS

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Physics & Electronic Laboratory Apparatus

MS-181 PVG BOYLE’S LAW APPARATUS, J TUBE

For use with large plastic containers, Boyle’s Law apparatus and Bourdon gauges. This foot pump is a standard car pattern with an 2 integral pressure gauge calibrated 0-4 kg/cm . The pump with a cylinder of size 125 x 60 mm. and with a pressure tubing of length 500 mm. terminating in a standard tyre

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Physics & Electronic Laboratory Apparatus

MS-182 PVG FOOT PUMP

To measure the actual pressure. Comprises a circular gauge of 100 mm. diameter with 40 mm. depth. . The dial reads 0-1.4 Kg/cm and 0-20 2 lb/in and the case has a clear perspex back so that the working parts may be seen. Gauge is fitted on a brass pillar of size 60 x 25 mm. height x outer diameter. A riffled tubule of 8 mm. diameter projects from the side of the pillar for connection to the system under investigation. Mounted on heavy, cast iron base of size 102 x 102 x 25 mm. with four rubber feet. Overall height 225 mm

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Physics & Electronic Laboratory Apparatus

MS-183 PVG BOURDON GAUGE

HAND OPERATED VACUUM PUMP

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Physics & Electronic Laboratory Apparatus

MS-184 PVG HAND OPERATED VACUUM PUMP

MS-185 PVG ELECTRIC VACUUM PUMP

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Physics & Electronic Laboratory Apparatus

MS-185 PVG ELECTRIC VACUUM PUMP

Economical, easy to operate, electrical oil free pump. Specifications Type Vaccum Pump 15Ltr Oil Free Skillset Motor Skills Material Cast Iron Dimensions 100x100x100 mm. Mass 2kg.

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Physics & Electronic Laboratory Apparatus

MS-186 PVG VACUUM PUMP OIL FREE

CAPILLARY TUBE HOLDER

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Physics & Electronic Laboratory Apparatus

MS-187 PVG CAPILLARY TUBE APPARATUS