Index of refraction plate, made from acrylic or glass.

This measuring set contains four high quality instruments-a 0-25 x 0.01 MM micrometer caliper, a 90 degree knife edge square, a 150 x 0.05 MM vernier caliper, and a 150 MM steel ruler. All of these are housed in a sturdy plastic storage case.

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 instrument is an enhanced version of our popular Intermediate Spectrometer.  Its larger 30mm diameter optics give brighter line images and make precise measurements easier.  The optical focusing system has also been refined and the instrument retains the same premium features as the…

An economical, high quality bench set that is excellent value for introductory lens work.  Features include: 74cm extruded aluminum bench with push-on plastic feet and large easy to read scale, three-position riders accommodate push-in stems of optical parts, pushing stem in locks rider in…

This magnifier offers an extra large field of view, hands free use, and folds down to a compact size for storage. Its 10cm lens provides 6x magnification. Ideal for use on a lab table, and for dissecting small specimens like owl pellets.

This basic breadboard kit contains all of the basic connecting parts to start exploring circuit design. The kit includes a variety of connecting cord sizes and two breadboards. All that is required is to provide components such as resistors, LEDs, or capacitors. Kit Contents: …

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…

Help students to investigate the force on an object in circular motion with this convenient kit. Through a series of simple demonstrations, students will better understand the relationship between the radius of the circular motion, the velocity of the moving object, and the external force required…

This kit includes an air core solenoid and a current balance for demonstrating and measuring the small force experienced by a conductor carrying an electric current in a magnetic field. To run the experiment, one half of the current balance is placed inside the solenoid. The other half has an…

This four-digit timer is designed to be used with air tracks, free fall apparatus, and other equipment. It is microprocessor-controlled and offers eight programmed functions to record counts, time intervals, periods of oscillation, accelerations, acceleration due to gravity, and velocities in…

Unique small scale version of the famous cavendish experiment to verify Newton's Law of Gravity and measure the Universal Gravitational Constant, G. This unit is remarkable for measuring the tiny value of G by simple, easily-understood means. This product has a 90 day lead time. Market…

During most of their life, stars are mostly composed of hydrogen and generate energy by converting it to helium. Although other elements are present to give individual stars their “fingerprint” the lines of hydrogen and helium are visible in stellar spectra, as in this tube. The…

Durable, liquid-filled clear magnetic compass is housed in a black plastic rotatable bezel. Graduated in 5° increments. Outer diameter of bezel is 45mm. Outer diameter of clear compass is 35mm. Includes a lanyard.

This device can be used as a classic standard calorimeter or as an electric calorimeter. Made of aluminum and plastic, the calorimeter has a diameter of 10cm, height of 11cm, liquid capacity of 175ml, and a heat capacity of 25J/°C. Electrical requirements are 6V DC, up to 2A.

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.

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…

Display version of the Foucault 1851 experiment to demonstrate the Earth's rotation. The 57" high unit contains a maintained pendulum whose precession rate can also be used to calculate latitude or time. This product has a 90 day lead time. Market standard for this type of product.

Recommended for grades 3 to 8, this set is ideal for introducing students to the concepts of changing force by levers and pulleys, and the notion of mechanical advantage. The manual describes experiments with the three types of levers, single and double pulley systems, and shows the characteristics…

This is a quick and clean way to visualize magnetic fields. The demonstrator is a transparent acrylic case that holds iron filings suspended in a fluid of appropriate viscosity. When it is placed over a magnet, the field pattern can be viewed directly, or it can be placed on an overhead projector…

These foam calorimeter cups have excellent insulating properties so you can investigate thermal energy with minimal loss to the environment. The lids have holes for inserting a thermometer or temperature probe. Outside Dimensions Height: 4.25” Diameter: 4” Inner container: Height: 4” Diameter 4”…

This simple tool measures wind speed and direction. The wind speed range is 0 to 17 meters per second (+/-10%). The direction indicator is divided into 16 compass points. A built-in compass is provided. Shipping weight: 4.4 Oz., dimensions: 9" x 6" x 6".

Demonstrate key electrostatics concepts with this kit. Contains everything necessary to construct two flask form elctroscopes. Detailed manual included experiments using two electroscopes for positive and negative charge studies, and a Faraday's Pail experiment. Kit includes 2 Glass Flasks, 2…

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,…

The design of the SpillNot™ uses the principles of Newtonian physics to keep the liquid in the container. The flexible handle and the location of the suspension point above the center of the tray ensure that the forces on the liquid are always directed towards the supporting tray, even when…

Slotted weight set with hanger & case, brass. Includes 1x50g, 9x20g, 1x10g, 2x5g, hanger

Flexible 18swg stranded wire cord with two way stackable banana plugs at both ends.

The Phase and Group Velocity Apparatus (oscilloscope not included) uses sound waves in the ultasonic region to clearly illustrate and distinguish the often poorly understood phase and group velocity concepts. It permits precise measurements of the velocity of sound in up to three different liquids…

The 1660-point solderless breadboard is built with high-quality construction that can withstand repeated use. It includes color coordinates that are screen-printed for easy reference. This breadboard is perfect for investigating circuit designs and prototyping. It accepts most electronic components…

Made from plate glass about 2mm thick with highly silvered back.

Student optical bench contains sufficient equipment for high school physics applications. Set includes the following: 1 Meter Stick, 1 Screen support, 2 Lens Supports for 38mm and 75mm lenses/mirrors, 5 Board screens measuring 10 x 12.5cm with a millimeter scale on both sides, 1 Marker and object,…

Set of 9 weights consisting of 1 each 10g, 50g, 100g, 500g, 1000g, and 2 each 20g, and 200gram weights. Weights are made of cast iron with a black enamel finish. Replacement weights are available separately.