Physics

ABRA has an extensive inventory of physics material for the classroom, covering major topics like mechanics, properties of matter, force and mass, heat and thermodynamics, heat and energy, alternative energy, waves and sound, optics, light and sound, electricity and magnetism, electrostatics, electrochemistry, robotics, and lab equipment.

US$5.45
These Spring Scales come in a clear plastic case, and include a metal pointer, spring, suspension ring, and load hook. Scales are calibrated in Grams, Newtons, or both, with zero adjustment.
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US$5.45
These spring scales feature a clear plastic tube design, and are color-coded. A zero adjustment screw is provided at the top. Overall length is approximately 7". 250g / 2.5N. Graduation: 5g / 0.05N.
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US$5.45
These Spring Scales come in a clear plastic case, and include a metal pointer, spring, suspension ring, and load hook. Scales are calibrated in Grams, Newtons, or both, with zero adjustment.
Delivery within 2-3 weeks
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US$5.45
These spring scales feature a clear plastic tube design, and are color-coded. A zero adjustment screw is provided at the top. Overall length is approximately 7". 250g / 2.5N. Graduation: 5g / 0.05N.
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US$89.18

The PSC001 is a superior version of the classic device for investigating electromagnetic induction, using primary and seocondary coils.

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US$31.80
This well constructed and attractive electric bell model is mounted on a clear acrylic plate and a finished wooden stand to allow the functional parts to be clearly seen, and operates on 6V DC with an on/off switch, adjustable contact screw, and binding posts for easy connection.
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US$14.60
For measuring weights, masses, and forces.
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US$14.60
For measuring weights, masses, and forces.
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US$5.45
These Spring Scales come in a clear plastic case, and include a metal pointer, spring, suspension ring, and load hook. Scales are calibrated in Grams, Newtons, or both, with zero adjustment.
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US$5.45
These spring scales feature a clear plastic tube design, and are color-coded. A zero adjustment screw is provided at the top. Overall length is approximately 7". 500g / 5N. Graduation: 10g / 0.1N.
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US$3.46
These student grade partial immersion thermometers are etched in 1° increments. Each thermometer comes complete with an anti-roll triangle and is housed in a convenient re-usable plastic storage.
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US$5.89
These student grade partial immersion thermometers are etched in 1° increments. Each thermometer comes complete with an anti-roll triangle and is housed in a convenient re-usable plastic storage.
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US$19.99
Economical Brass Vernier Caliper with 140mm Capacity. Features inside and outside jaws, full length depth gauge, friction ruler and sliding lock for gauging. Graduated in millimeters and 1/16th of an inch.
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US$22.05
Set includes two helical springs. The long, narrow spring measures 3/4" x 72", and can be extended to 5 meters. The larger spring measures 3" x 4", and can be extended many times its length without distortion. Includes activity guide.
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US$9.58
Hydrometers for determining the specific gravity of liquids.  Two specific gravity ranges available.  Each unit is housed in a re-usable storage tube.  We also carry hydrometer cylinders.
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US$1.46
Weights are made of brass, with nickel plated surfaces. All weights are carefully tested and calibrated. 1 weight, 5g.
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US$1.75
Weights are made of brass, with nickel plated surfaces. All weights are carefully tested and calibrated. 1 weight, 10g.
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US$2.91
Weights are made of brass, with nickel plated surfaces. All weights are carefully tested and calibrated. 1 weight, 10g.
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US$4.66
Weights are made of brass, with nickel plated surfaces. All weights are carefully tested and calibrated. 1 weight, 50g.
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US$13.58
Weights are made of brass, with nickel plated surfaces. All weights are carefully tested and calibrated. 1 weight, 200g.
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US$55.36
Weights are made of brass, with nickel plated surfaces. All weights are carefully tested and calibrated. 1 weight, 1000g.
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US$13.94
Plastic Insulated Copper Wire is 22 gauge, supplied in 100 foot rolls.
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US$13.94
Plastic Insulated Copper Wire is 22 gauge, supplied in 100 foot rolls.
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US$13.94
Plastic Insulated Copper Wire is 22 gauge, supplied in 100 foot rolls.
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US$11.58
WEC026 Enameled Copper Magnet Wire 26 gauge, 4 ounce spool Enameled Copper Magnet Wire is supplied in 4-ounce spools. Item #...
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US$13.90
WEC028 Enameled Copper Magnet Wire 28 gauge, 4 ounce spool Enameled Copper Magnet Wire is supplied in 4-ounce spools. Item #...
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US$52.00
This classic device is used to demonstrate the conservation of mechanical energy and its conversion from one form to another.  After the wheel is rotated by hand to roll the supporting cords to the top and then released, its potential energy turns into kinetic energy of rotation as it falls. 
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US$3.62
This clamp can be attached to any standard meter stick.  It is used as a knife-edge fulcrum for supporting the meter stick in the inverted position
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US$30.31
Excellent for illustrating Newton's Third Law of Motion and the principle of Conservation of Momentum.  The five polished metal balls with thin bifilar suspensions on a unique support design provide for better results and stability. 
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US$28.11
Build your own series circuit using the handy Create-A-Circuit-Kit.  It comes complete with a "D" cell battery holder, a knife switch, two miniature light bulbs, two lamp holders, and four connector cords.  Includes activity guide.
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US$10.19
ELGL01-FOIL Spare gold leaves, pk/6 This sturdy electroscope features a metal case with front and rear glass windows for preventing air currents...
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US$17.54
This electroscope is housed in a 250ml Pyrex flask with a metal rod attached to a rubber stopper.  A pair of aluminum leaves is suspended from an alligator clip.  The knob on top of the rubber stopper accepts a charge.  When the charge enters the flask, the aluminum leaves separate. 
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US$4.30
FSCP01-PK/10 Fahnestock Clips, pk/10 Supplied as a package of 10.
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US$7.94
Equilateral, 45mm sides. Has one hole for adding fluids to study refraction and dispersion. Comes with funnel and stopper. 
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US$1.09
Clear plastic magnifier is 110 mm (4.50") in length and features dual lenses of 3x and 6x magnification. 3x lens is 50 mm in diameter and 6x lens is 20mm in diameter.
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US$22.89
This magnifier offers an extra large field of view, hands free use, and folds down to a compact size for storage.  Its 10 cm lens provides 6x magnification.  Ideal for use on a lab table, and for dissecting small specimens like owl pellets. 
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US$18.62
Tripod magnifier, 10X magnification. Brass.
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US$6.08
OBMS02 Metal Supports, pk/2 Individual Accessories for Meter Stick Optical Bench Set Item# Description OBLS38 Lens...
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US$167.36
This economical Stirling Engine runs by exploiting the heat flow generated by the small temperature difference between room temperature and a cup of hot water or ice. It is a classic illustration of converting heat energy into mechanical work using a thermodynamic cycle. The engine runs at about 150rpm when used with cup of hot water. Additional information available upon request. Includes activity guide.
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US$4.69
Made from plate glass, with carefully ground and polished optical surfaces, and cleanly ground edges.
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US$7.69
Made from plate glass, with carefully ground and polished optical surfaces, and cleanly ground edges.
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US$5.89
Made from plate glass, with carefully ground and polished optical surfaces, and cleanly ground edges.
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US$48.64
These quality student transmission gratings are protected by two glass plates, 60mm x 45 mm. Viewing area measures approximately 45mm x 30mm. These transmission gratings are for detailed quantitative spectral analysis.
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US$15.76
These quality student transmission gratings are protected by two glass plates, 60mm x 45 mm. Viewing area measures approximately 45mm x 30mm. These transmission gratings are for detailed quantitative spectral analysis.
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US$50.32
This is replacement diffraction gratings panel used in the SPECT01 Spectrometer.
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US$11.72
These right angle refraction prism are made of polished flint glass or acrylic.   Order# Description Size  PFG050  Right...
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US$15.76
These are rectangular blocks that are ideal for refraction and internal reflection studies as well as index of refraction measurements.
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US$14.88

These are rectangular blocks that are ideal for refraction and internal reflection studies as well as index of refraction measurements.

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US$5.39
These Pendulum Balls are used in pendulum apparatus for displaying collision forces, motion and mass impact between each ball in demonstrations.
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US$1.57

These Plane Spherical Mirrors are made of optically true glass with scratch resistant copper back silvering.

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US$4.55
These are Acrylic Mirror Strips are about 3mm thick. The Glass Mirror strips are made from plate glass about 2mm thick with a highly silvered back.
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US$14.74
These are plastic clips designed to clip any spherical mirrors or lenses. This polished wooden support is 5 tall and has a 1.5 V shaped grooved wedge to hold mirrors or lenses 38mm through 100mm, securely in place.
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US$4.62
These accurate, non-rolling hexagonal masses are made of steel, and feature a durable black oxidized finish.
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US$12.24
These accurate, non-rolling hexagonal masses are made of steel, and feature a durable black oxidized finish.
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US$354.12
This Quiet Air Source is low noise (<58dB) and an ideal accessory for air tracks, air tables and other pneumatic equipment in a physics lab. The 250W motor produces a clean air output with a flow rate of 35 m3/hour at a 0.70kPa overpressure. Dimensions: 16" x 19" x 10".
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US$31.77
These demonstration lens sets contain 6 different types of acrylic lenses. Comes in are-usable cardboard storage box. Types of lenses: Double convex lens. Plano-convex lens. Concavo-convex lens. Double concave lens. Plano-concave lens. Convexo-concave lens.
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US$14.24

Lenses are made from clear acrylic with one frosted plane surface.

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US$26.25
Each tube has its characteristic spectrum when energized before a spectroscope. These tubes acquaint students with the spectra of common gasses in their pure form as well as for demonstrating wavelength. The glass tubes are 25cm long with the capillary portion about 10cm long.
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US$6.92

These Tuning Forks are made of aluminum with the frequency and scale letter stamped on each fork.

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US$6.92

These Tuning Forks are made of aluminum with the frequency and scale letter stamped on each fork.

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US$27.25
It is an ideal way to demonstrate the transformation of energy between the mechanical and electrical forms in either direction. The unit produces a terminal voltage of 6.3V and a maximum current output of 0.2A. The generator is supplies with two 15" leads.
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US$99.19

This set is an easy yet effective way to teach how AC and DC electricity is produced. Banana plugs can be inserted into the different connectors to change from AC to DC electricity. The unit has a clear base for easy demonstration of connections. Includes an activity guide. Dimensions: 10"x7"x9". Shipping weight 2.5 lb. AC/DC Generator Set.

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US$26.60
This is a set of six glass spherical mirrors with back surface silvering. Includes three convex and three concave mirrors, all of 50 mm diameter. Focal lengths are 50 mm, 100 mm, 200 mm, –50 mm, –100 mm and –200 mm.
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US$14.24

Lenses are made from clear acrylic with one frosted plane surface.

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US$16.52
These demonstration lens sets contain 6 different types of glass lenses. Comes in are-usable cardboard storage box. Types of lenses: Double convex lens. Plano-convex lens. Concavo-convex lens. Double concave lens. Plano-concave lens. Convexo-concave lens.
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US$34.92
The Optics Set includes two acrylic lenses, one each of double convex, and double concave, and three mirrors, one each of convex, concave and plane. The set is packed in a cushioned wood storage box.
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US$12.99
The Acrylic Semi Circular Lens have a 75mm base and are 15mm thick.
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US$7.10
The Semi-Circular clear acrylic Refraction Cell demonstrates refraction and internal reflection in water and to measure its refractive index. The cells have uniform wall thickness to eliminate distortion. 12 cm diameter x 2.5 cm high.
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US$9.97
The Rectangular clear acrylic Refraction Cell demonstrates refraction and internal reflection in water and to measure its refractive index. The cells have uniform wall thickness to eliminate distortion. 6cm x 3cm x 6.2cm high.
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US$33.17
The Rectangular Glass Block has two frosted sides. Dimensions: 114mm x 63mm x 19mm.
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US$43.60
The Mirage Apparatus consists of two specially designed parabolic mirrors positioned one above the other with the concave reflecting sides facing inwards. Light from an object placed at the center of the bottom mirror is reflected by both mirrors to form a real, three-dimensional image at the center of the top mirror.
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US$46.96
These quality student transmission gratings are protected by two glass plates, 60mm x 45 mm. Viewing area measures approximately 45mm x 30mm. These transmission gratings are for detailed quantitative spectral analysis.
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US$72.75
Set consists of 8 Tuning Forks in a wooden box with foam lining. Each tuning fork has a specific place in the foam lining die cut for easy storage. Each set also contains a mallet specially designed with one hard and one soft end for use with all frequencies of forks. Contains one each of frequencies of: 256, 288, 320, 341.3, 384, 426.6, 480 and 512.
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US$36.13
Each unit consists of a wooden resonator box, tuning fork and tuning fork mallet. The Resonator Box is 18cm x 9cm x 5cm.
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US$2.91
This is a Rubber Tuning Fork Hammer with a hard rubber head on a varnished hardwood handle.
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US$9.21

These Hydrometers are used for determining the specific gravity of liquids.

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US$13.58
This is a new model which has a much larger capacity (100ml) than the traditional aluminum model (22ml) for greater accuracy and easier operation. Also, both the cylinder and the cup have marked divisions which allow the students to repeat the experiment with different volumes.
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US$11.65
Set includes 1 each of 1, 5, 10, 50, 100, and 500 mg weights, and 2 each of 2, 20, and 200 mg weights. Also includes rectangular plastic box with rider and forceps.
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US$32.82
This Hooke's Law Apparatus quantitatively shows the principles related to Hooke's Law. Includes a 14 metal rod that mounts on a 4-1/2 diameter base. Scale in centimeters and inches can be easily adjusted along the rod. The plated steel weight holder and spring are attached to an adjustable collar with crossbar.
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US$36.05
This Eddy Current Demonstrator consists of a 12" long copper tube and two apparently identical metal slugs with rubber end caps. One slug is plain steel and falls through the copper tube quickly. The other slug is a strong neodymium magnet that falls very slowly through the tube due to the breaking effect of eddy currents.
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US$6.55
The lodestone is a natural rock that contains traces of iron ore with natural magnetic properties. This magnetic lodestone was made into a magnet by the earth's magnetic field. 
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US$36.88
Students can build a bar-shaped and a U-shaped electromagnet which they power with a 6V battery (not included) or DC power supply (not included), to determine the magnitude and polarity of electromagnetic forces.
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US$2.73
The Magnet Stirrup provides support for bar magnets or friction rods. Allows magnets or friction rods to hang freely and turn in a horizontal plane. Hooks are 89mm apart. Dimensions 3 1/2 x 2 x 1.
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US$31.96
Set includes two helical springs and a length of cotton string. The long narrow spring measures 3/4" x 72" and can be extended to 5 meters. The larger spring measures 3" x 4" and can be extended many times its length without distortion. Includes an actvity guide.
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US$26.01

This is a pre-assembled DC Motor designed for students to learn about electromagnetic forces. The open structure resembles the diagram found in many textbooks. The polarity of the magnets can be reversed to change the direction of the rotation. The motor can also be used with a rheostat to observe the change of speed with the change of current.

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US$24.43
This is for determining the electrical equivalent of heat. The cover contains a mounted heating coil of about 1.5 ohms resistance with standard binding posts for electrical connections. When connected to a 6-volt battery, this coil will cause a temperature rise of about 5 degrees centigrade in 10 minutes.
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