Demonstrates the flow of convection currents in a gas. Place a small, lit candle under one open chimney, the use touch paper or a wood splint to introduce smoke into the opposite chimney. The heat from candle will cause the air to flow and the smoke can be observed traveling down into the box and…

Electra dough allows students to play with materials that are fun, non-threatening, and familiar, all while learning the basic concepts of electrical circuits. This conducting dough, as the name implies, can conduct electricity to form any circuit that you can mold. Our dough is natural,…

The Boyle's Law – Mariotte provides an accurate quantitative result for the pressure/volume relationship of air at a constant temperature. A graduated cylinder with a close-fitting piston is connected to a pressure gauge by a narrow tube. Pressure inside the cylinder can be adjusted by rotating the…

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 Digital Ammeters are simple, have an easy-to-read display, and run on a 9V battery. We sell several different ammeters with different ranges of measurable amperages. PRODUCT WARNINGS WARNING: This product can expose you to chemicals including styrene and lead, which are known to…

The Newton's Cradle is more than a cool novelty decoration, it is a beautifully simple demonstration of some core concepts of physics and mechanics. With the Newton's Cradle, you can explore concepts such as the conservation of energy, momentum, elastic collisions and friction. Provided with a well…

The Inertial Balance allows for the measurement of inertial mass. Adding mass to one end increases its inertia and causes it to oscillate at a slower rate. This apparatus allows for the investigation of masses by comparing the oscillation period of a known mass to the oscillation period of an…

Our Multiple Object Needle provides you with a row of four thin needle points to obscure light with during experiments on an optical bench. This accessory is designed to work with our Basic and Deluxe Optical Benches (#OPTBN-BSC and #OPTBN-DLX). PRODUCT WARNINGS WARNING: This…

The Harbottle Pressure Globe helps students to understand the meaning of fluid pressure and pressure reduction. Simply place a balloon into the opening of the glass Harbottle and stretch the mouth of the balloon over the opening of the bottle. Blow into the balloon and, when it is fully inflated,…

Knife switches are used to manipulate how electricity flows through a circuit. The base and the handle of the switch are insulated to allow for handling. Wires are connected to the screw-type binding posts. This knife switch is a double pole, double throw, single pole, double throw, single pole,…

This density rod set can be used to study the relationship between both mass and density. The five rods are equal mass. The five different materials are PVC, brass, polyethylene, aluminum and nylon. All rods have a diameter of 12mm but vary in length. PRODUCT WARNINGS WARNING: This…

Borosilicate glass with permanently fused and accurate graduations

Connector cords are useful in various electricity experiments, as well as in many apparatuses that require connections to power supplies. All of our connector cords are made of 18-gauge insulated wire. These connector cords have alligator-clips on each end. Alligator-clip ends are useful for useful…

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: …

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 …

An optical bench allows you to perform and observe the fundamentals of optics such as image formation, reflection, refraction, and more. The bench consists of a painted, square aluminum bar, two molded supports with leveling screws, and graduations from 0cm to 100cm, subdivided in millimeters. Feel…

The Wave Demonstration Kit comes with one long, narrow steel spring and one larger helical spring that are matched to give nearly equal amplitudes of reflected and transmitted pulses and waves. A string and instructions are also included. PRODUCT WARNINGS WARNING: This product can…

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…

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…

The Mechanical Wave Kit helps students explore standing wave patterns at different resonant frequencies, longitudinal waves and the node and antinode points on the wave. The Mechanical Wave Kit was designed to include everything needed to study wave patterns. It includes a Sine Wave Generator…

A Gyroscope is a fascinating mechanical device that at time seems to defy the laws of gravity. The unique characteristic of a gyroscope is that once it is set spinning, it tends to want to remain in its original plane regardless of rotation of its housing. The tendency to resist change in direction…

A Wheatstone Bridge is a tool that can be used to determine an unknown electrical resistance within a circuit by comparing known resistances to the unknown resistance value. PRODUCT WARNINGS WARNING: This product can expose you to chemicals including styrene, nickel, and lead, which…

This apparatus is an effective tool for demonstrating the coefficient of expansion of metals. It comes with rods of the following materials for you to test: copper, brass, aluminum, and steel. To demonstrate linear expansion, place a rod inside of the apparatus’s tube that has both an inlet and…

Our Wind Vane with Metal Base is designed to be durable to withstand the elements. Simply face it towards the north to know which direction the wind is blowing. Its heavy metal base helps prevent the wind vane from blowing over during harsh winds. Instructions included. PRODUCT WARNINGS …

A voltaic cell is ideal for demonstrating the characteristics of a primary cell. The cell's cup is clear so you can easily view the electro-chemical reactions taking place. The top rim is made of heavy molded plastic with a sturdy nickel plated clamp that holds both round and flat electrodes. …

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…

Understanding and measuring wavelengths is an important subject in any physics class. 24A00B511 This is a Class II, Laser Pointer.  The green laser light has a longer wavelength of about 532 nanometers. The Laser Pointer is a high-quality pointer at an affordable…

Our Diaphragm accessory allows you to cycle through six different size apertures for light experiments: 2mm, 4mm, 6mm, 10.75mm, and 14.85mm. This accessory is designed to work with our Basic and Deluxe Optical Benches (#OPTBN-BSC and #OPTBN-DLX). PRODUCT WARNINGS WARNING: This…

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…

The unit measures the velocity of sound in the air. Partially fill the resonance tube with water and then sound a tuning fork of known frequency at the tubes open upper end of the Resonance Tube. The water level can be adjusted until the air in the tube resonates at the same frequency as the tuning…

This unit helps students understand the Combined Gas Law and describes the relationship between the pressure, temperature, and volume of a gas. The air in the unit is compressed by turning the handle, and the volume can be read on the graduated scale printed on the cylinder. The pressure can be…

This set of two magnetic pucks will repel each other in a collision on an air table. Air table not included. PRODUCT WARNINGS WARNING: This product can expose you to chemicals including styrene and lead, which are known to the State of California to cause cancer, birth defects, or…