Optically true glass with scratch-resistant copper back silvering individual glass mirrors ideal for a variety of optics experiments. Focal lenghts available from 25mm - 300mm.

Flexible, 18swg stranded wire cord with alligator clips at both ends. Alligator clips have protective vinyl sheath.

This economical seven piece kit lets you demonstrate the conversion between different forms of energy. It includes four devices for generating electrical energy from mechanical motion (hand generator), chemical energy (batteries), light (solar energy), and wind (windmill) and three devices for…

Quick and easy tools for demonstrating thermal expansion. There are four bar combinations: Brass/Aluminum, Brass/Iron, Copper/Iron, and Brass/ Copper. Since each metal has a different coefficient of thermal expansion, they will create a unique curve when paired with a different metal. Metal bars…

Made from Plate Glass, with carefully ground and polished optical survaces, and cleanly ground edges, these lenses feature a diameter of 38mm - 125mm and focal lengths from 50mm - 500mm.

This versatile and tough steel inclined plane includes a graduated protractor and an adjustable pulley. Incline is 4" wide x 23" long. Includes a 14oz. Roller that can be used as a vehicle on the plane or as a counterweight. Also includes a pan and cord for masses.

Featured displays of this electronic alarm stopwatch include time (hours-minutes-seconds, with 12 or 24 hour mode option), calendar, 24-hour stopwatch, alarm, hourly chime, 1/100 second chronograph, split time, and total time. It is lightweight, easy to operate, ad comes complete with battery and…

Two identical sized screw cap metal cans (one smooth metal and other painted dull black) to demonstrate the difference in cooling rates of hot water inside the cans due to different surfaces.  The difference in the cooling rates is attributed to the thermal radiation emitted by the two cans. …

Magnifying Glass with Glass lenses molded into high quality unibody plastic frames.

This mineral test kit is useful for rock, mineral and fossil identification. Kit includes: Hardness scale, dropper bottle, hand lens, glass streak plate, black streak plate, white streak plate, cermaic bar magnet, nail and penny.

Perform quantitative spectroscopy experiments using this good quality yet economical spectrometer. Unit is mounted on a stable base with attached collimator, and rotating telescope platform. Features include a 2.6cm diameter achromatic optical system with a 10x eyepiece and crosshair. A 16cm…

The set contains 6 acrylic lenses: one each of double convex, plano-convex, concavo-convex, double concave, plano-concave, and convexo-concave. Includes an activity guide and a reusable cardboard storage box.

Fresnel Lens with vinyl sleeve is 3 3/8" wide x 2 1/4" tall.The magnifying window is 3 1/8" wide and 1 3/4" tall and has a magnification of 1.25x.

Explore basic mechanics concepts with this all-metal, freestanding apparatus, designed for both durability and ease of use. The plane is wide enough to accommodate standard friction blocks or a Hall’s carriage with a smartphone attached, and its walled construction prevents objects from falling off…

A set of 5 springs with different spring constants. The forces required for a 1 cm extension are 0.25N, 0.5N, 1N, 1.5N, and 2.5N respectively. Pre-stress has been removed for accurate results. With a hook to support a weight hanger and a red arrow to indicate position.

Includes 1 each of 1, 5, 10, 50, 100, and 500 mg weights, and 2 each of 2, 20, and 200 mg weights. Rectangular plastic box with rider and forceps.

Hardwood half meter stick for use with our Demonstration Balance Support or other laboratory measurement activities.

Utilize the power of your smartphone with this unique Hall’s Carriage. The secure clip holds your smartphone securely for motion experiments. Using an app of your own choosing, you can graph acceleration and velocity. Includes activity guide. Secure clip holds your smartphone securely for…

We offer a variety of economical ceramic bar, disc, and ring shaped magnets. Magnets are upainted, except where noted.

1216T40 (DCSET4): This set includes one each of acrylic, pine, nylon, and aluminum cubes packaged in a poly bag. Includes a reference table showing density values of individual specimens. 1216T39 (DCSET10): This set of 1" cubes includes one each of acrylic, oak, pine, poplar,…

We have designed a speical stand to replace the pencil, for hands-free demonstration. Magnets are in plastic cases, to reduce breakage. Set contains 5 brightly colored magnetic rings, and the plastic stand, in a cardboard storage box.

This simple but precise launcher projects 16 mm steel balls at ranges suitable for use on the bench top or from the bench to the floor. A protractor and plumb line make it easy to set any required launch angle from 45° downwards to straight up. Three different spring tensions give three…

Powerful Alnico 1 bar magnets, shipped in pairs, with separators and keepers. Width 1/2, Thickness 1/4.

This Collection contains 20 Types of Basic Minerals Specimens. The Minerals Specimens include Some of the following Agate, Amethyst, Barytes, Calcite, China Clay, Dolomite, Feldspar, Fire Clay, Fullers Earth, Graphite, Gypsum, Jasper, Magnetite, Mica, Pyrolusite, Pyrophilite, Quartz, Soap Stone,…

Convenient fully assembled battery set holds up to 4 D-size batteries. Five color-coded binding posts on the base for easy, safe, and reliable connections to hook-up cords provide outlets for 1.5V, 3V, 4.5V or 6V supply voltages. Superior construction¡Xrobust, molded battery holders for secure…

This set of 15cm long x 2cm wide strips can be used in chromatography studies. Sold as a pack of 100 strips.

Clear plastic magnifier is 110mm (4.50") in length and features dual lenses of 3x and 6x magnification. 3x lens is 50mm in diameter and 6x lens is 20mm in diameter. Handy molded plastic magnifier has 2x, 6x, and 8x magnification lenses.

These weights feature flat countersunk bottoms, with a double-ended hooked rod through the middle. They can be used on balance pans, as well as hooked in tandem for lever arm studies. Set of 9 weights consisting of 1 each 10g, 50g, 500g, 1000g, and 2 each 20g, 200gram weights. Weights are made of…

Excellent tool for demonstrating the principle of fiber optics.  The curled 48" long clear acrylic rod conducts light by internal reflection. A flashlight or laser pointer can be used for the demonstration.

This apparatus allows the thermal behavior of a resistor, thermistor, and thermocouple to be studied, as well as a closed loop control system. This product has a 90 day lead time. Market standard for this type of product.

This transparent overflow can is graduated to 125ml and includes an attached spout. Made of clear acrylic, the can measures 5.5cm I.D. x 7cm high with a wall thickness of 3mm.

Developed in partnership with Argonne National Laboratory, this kit gives your students the opportunity to apply a revolutionary nanotechnology manufacturing technique to grow nano-scale and micro-scale copper wires. Using a unique ultra nanocrystalline diamond (UNCD) electrode, students use…