Contains Hollow Friction Rod, Solid Friction Rod, 1/2 Ground Friction Rod, Ebonite Rod, Wool Pad, Silk Pad, Faux Fur Pad, 3-Balloons and 10 feet of String. Instructions included.

These 24mm electrode discs are useful in thermal conductivity experiments and many others in the lab. Each set of five includes one electrode of each of the following metals: copper, brass, iron, aluminum, and zinc. Check out this blog post of ours for experiment ideas using this kit . …

Electroscopes are used to detect and roughly measure the electric charge on an item. This electroscope has a round case, a free-spinning pointer, and a gauge. PRODUCT WARNINGS WARNING: This product can expose you to chemicals including benzene, nickel, and lead, which are known to the…

Prism Smooth Polished Glass Surface Optically Clear Individually Boxed

Our Heat Transfer apparatus is a useful visual demonstration of the transfer of heat by using an aluminum bar to connect two insulated containers - one filled with very hot water and the other filled with cold water. A thermometer is inserted in the top of each container. As the heat is…

Glass with ground edges - Double Convex

This 3“ metal ball will float in cold water and sink in hot water. Use it to demonstrate the effects of temperature and mineral content on water’s density. Instructions included. PRODUCT WARNINGS WARNING: This product can expose you to chemicals including lead, which are known to the…

This 12V, 24W light bulb is a replacement bulb for our Light Source accessory (#OPTBN-LS). Our Light Source accessory (#OPTBN-LS) is designed for our Basic and Deluxe Optical Benches (#OPTBN-BSC and #OPTBN-DLX). PRODUCT WARNINGS WARNING: This product can expose you to chemicals…

This apparatus aims to help demonstrate rotational inertia and the effect that weight distribution has on it. Each disk can be opened to distribute steel balls into the eight compartments within. The set comes with two pucks and eight steel balls. PRODUCT WARNINGS WARNING: This…

Our flat metal electrodes are 18mm by 100mm (approximately 0.75" by 4"). We carry electrodes made from seven different metals: aluminum, brass, copper, iron, zinc, nickel, and tin. Use them in your own experiments with electricity.   PRODUCT WARNINGS WARNING: …

This rod-mounted single, plastic pulley is attached to a metal clamp with a rod that is 8mm in diameter. The clamp can attach to any table up to 2.5in. thick. The 2in. diameter pulley can be adjusted by loosening the 8in. long rod and retightening it once it is in the desired position. The height…

Our Object Screen is a circular, black metal screen with a 75mm diameter and 10mm central aperture covered in 1.5mm wire mesh. Use to experiment with light. This accessory is designed to work with our Basic and Deluxe Optical Benches (#OPTBN-BSC and #OPTBN-DLX). PRODUCT WARNINGS …

The ball is placed on top of the acrylic square, which is positioned on top of an aluminum post. The spring is pulled tight and then released which shoots the square out from under the ball. The balls falls into a concave recession in the post. Similar to pulling a tablecloth out from under a set…

This kit has all the necessary components to explore standing waves. Instructions included. Includes: 1 Variable frequency generator 1 Spool of string 1 Support Stand 1 Steel rod 1 Power cord 1 Chladni Plate 1 Vibration generator 2 Connector cords 5 Weights 1 Fastening…

Our Orienteering Compass is great for map work or when hiking. Specifications: Graduated in 2° increments, and features four scales Black bezel with easy-to-read print Has liquid-filled capsule, declination correction scale, luminous points, and 4X magnifier in base Acrylic base…

GSC International N-00003 DC Voltmeter Digital with Connectors. Range 25 V 0.01V. The Digital DC Voltmeter is small, portable, and easy to use for any circuit. A 3 volt lithium battery is included. Two alligator clips are directly connected to the meter’s main body, allowing for…

Sold by the dozen.

This unit demonstrates the principles of momentum and kinetic energy in collisions. It's supplied with both wood and metal balls, string, a table clamp, and a guide. PRODUCT WARNINGS WARNING: This product can expose you to chemicals including nickel and lead, which are known to the…

Spring Scales are used to weigh loads and are used in physical science experiments as a basic accelerator. Spring Scales use Hooke’s law to determine the size of the force stretching the spring by measuring the displacement. The spring scale has a clear body that is graduated, a mounting ring…

These prisms are made from optically-clear acrylic. They have an equilateral triangle shape (25mm edges), and are boxed individually. PRODUCT WARNINGS WARNING: This product can expose you to chemicals including ethyl acrylate, which are known to the State of California to cause…

This is an attractive table-top model of the fascinating Stirling Engine. The Stirling engine is a heat engine and is much more efficient than an internal-combustion engine that is often used in cars. The engine uses a system called the Stirling Cycle. The Stirling Cycle uses an external heat…

GSC International N-00002 DC Ammeter Digital with Connectors Range 3A,1mA. The 3A, 1mA Digital DC Ammeter with high accuracy is small and light enough to connect with any circuit. A 3 volt lithium battery is included. Two alligator clips are directly connected with the meter’s main body for…

We carry three sizes of durable, rectangular acrylic mirrors. PRODUCT WARNINGS WARNING: This product can expose you to chemicals including n-methylpyrrolidone, which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information…

Borosilicate glass with permanently fused and accurate graduations

Our Sling Psychrometer Kit is a simple hygrometer used in measuring the moisture content in the air. When spun around on their wooden handle, the wet bulb thermometer and the dry bulb thermometer will read different temperatures. This information can then be used to determine relative humidity and…

A visual demonstration of how a lung is emptied and filled with air by the relaxation and contraction of the diaphragm muscle. Two balloons are attached to a glass "Y"-tube and simulate the lungs. The chest cavity is a plastic bell jar. The rubber sheet is used to represent the diaphragm.…

These pulleys are generally used as demonstrations in education, but they can also be used as a tool for relatively light items. 24A00B361 This is a cast metal pulley, 50mm diameter with a single groove.  The pulley has a hook at the top and bottom of the…

Our 6" by 6" Friction pads come in a variety of materials and are used to experiment with and observe friction. PRODUCT WARNINGS Our products are not toys . Use in a laboratory or educational setting only. Not for children 13 and under.

Our Lensatic Military Compass is an extremely accurate compass and includes many useful features. This compass is calibrated for North America, is shock resistant, and can determine the location of stationary terrain such as rocks and trees. Instructions included. Includes: Compass card…

Spring Scales are used to weigh loads and are used in physical science experiments as a basic accelerator. Spring Scales use Hooke’s law to determine the size of the force stretching the spring by measuring the displacement. The spring scale has a clear body that is graduated, a mounting ring…

Pascal's Ball can be used to demonstrate how changes in fluid pressure transmit equally in all directions. It consists of a sturdy metal body and ball. Instructions included. Specifications: 7.6cm Sphere Diameter 250ml Sphere Capacity PRODUCT WARNINGS WARNING: This…

The Basic Lung Apparatus is a simple apparatus that visually represents how a diaphragm works. A partial vacuum exists inside the jar, causing the lung shaped balloons to relax and contract. This Lung Demonstration Model also includes a second pair of balloons that can easily be swapped out to show…