Ginsberg Scientific Inc.

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US$11.00
This demonstration unit graphically illustrates the inertia of an object. Rest the plastic ball on top of the plexiglass square that is set on the vertical post. Release the spring and the square shoots out. The ball falls into the concave recession in the post, remaining at rest on top of the post as if nothing happened.
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US$14.58
Visually demonstrates Newton's Third Law of Motion and the principle of Conservation of Momentum. This unit helps students understand properties such as collisions between equal mass bodies, exchange velocities, kinetic energy and momentum.
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US$11.28
The Hall's Carriage is a sturdy carriage made of high impact plastic for durability. The one piece needle bearing wheels allows the carriage to roll with little resistance and a hole in the plastic body allows you to attach cords. Designed for any inclined plane. 5-1/2" x 2-1/"-1-1/2".
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US$10.84
The Fulcrum Holder is a metal support and cast iron base only. Dimensions: 3-3/4"" x 3-3/4" x 6-1/2".
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US$2.31
The Metal Balance Clamp slides on and locks to any meter stick. The removable stirrup can be used for suspension of weights.
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US$38.50
Contains all the necessary components to demonstrate the relationship between length of the lever arm, moment of force, and amount of force. When they adjust weights on the lever to establish equilibrium students will observe the law of torque and its properties. Consists of a 50cm meter stick, stand, three knife-edge clamps, one 50 gram hooked weight and one 100 gram hooked weight.
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US$51.98
The unit uses a nylon pendulum with a tapered rubber insert. Both pendulum and base have leveling screws. The spring-loaded gun has a self-locking trigger and rubber bumper to prevent damage on impact. The scale is marked in degrees and is registered by a counter-weighted needle that remains in place at the height of the arc.
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US$10.73

This DC Motor Kit contains all the parts you need to build a DC Motor from scratch. Wind your own armature and field coil and build the commutator with two snap pieces. Includes detailed instructions manual. Excellent for classroom project.

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US$17.88
The Gyroscope is ideal for illustrating the principle of gyroscope and rotational inertia. Mounted in a hearty wire frame, the 5.5cm (2.2") diameter, cast metal gyroscope is held by a support base with a socket at the top end. A long starting string and instructions are also provided.
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US$29.59
This is a hand vacuum pump supplied with a pressure gauge that reads in both centimeters and inches of mercury. Pumping rate is 15ml per stroke, and will displace up to 725 ml of air. Fitted with a valve to release the vacuum without disconnecting the pump.
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US$33.00
Constructed of heavy gauge aluminum to prevent corrosion and collapsing under a vacuum. Consists of a boiler, sample cup, tripod and two rubber stoppers with and without hole. The boiler is 100mm diameter x 170mm height, the stand measures 240mm in height. Requires a bunson burner or hot plate. (5" x 11-1/2" x 6").
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US$2.75
The Electroscope Foil Leaves are for any Electroscope. Pack of 12. (1/4" x 1").
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US$80.25
This kit can be used to demonstrate most of the principles of electricity. Supplied with an easily understood instruction manual. The kit contains the following: Voltmeter 0-1.5; 0-3v, Milliammeter 0-500 mA; 0-1000mA, Electroscope, Battery Kit, Mini Rheostat, Two Bar Magnets 2" in length, Compass Needle, Two Resistors, Mini Electromagnet, Horseshoe Magnet, Two Mini Contact Switches, Two Bulb Holders, Package of Iron Filings, Battery Holder D-Cell, Coil of Wire, Steel Rod Electromagnet, Acrylic Piece 19mm x 120mm, Two Plastic Rods 5mm x 120mm.
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US$9.63
The Magnetic Suspension Horizontal Rotor demonstrates many magnetic levitation and low friction phenomena of physics. Place the pointed end against the glass inset and gently twirl.
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US$280.00
This is perfect for classroom demonstrations of the effect a load has on a power source. The field of this magneto consists of a single Alnico magnet, which has a strong magnetic flux density. Capable of producing higher voltages then cobalt-steel magnets. The generator is mounted on 7 5/8" x 12" wood base with incandescent lamp and socket used as a load. Two binding posts are placed on the board for attaching other loads. Complete with instructions. (16" x 8" x 6"; 6Ibs).
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