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…

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.

Our Radiometer is made from a glass bulb from which much of the air has been removed. Inside the bulb, on a low-friction spindle, is a rotor with 4 vanes. Each vane has one blackened side and one silvered side; one black vane features a white dot in order to count rotations easily. When exposed to…

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.

A syringe is used as an airtight piston that is mounted on a wood base and platform. Mechanical pressure in the form of weight, is placed on the platform, which changes the volume gas. You then plot the volume of gas versus the pressure to obtain a good approximation of Boyle's Law. The unit…

Tuning forks made from alluminum alloy. The frequency and leter scale is stamped on each fork.

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…

Galvanometers measure very small amounts of current or voltage in a circuit. Our meters are accurate to +/- 2.5% and have banana jack style binding posts.

Specially constructed hammers for sounding tuning forks. TFWHAM has a spherical hard rubber head on a varnished hardwood handle. TFHAMR has an acrylic head with a rubber end mounted on a metal/wooden handle.

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…

Happy and Sad Balls are used to show the relationship between elastic and inelastic collisions. While both balls share an identical makeup between mass, density, and appearance, one will bounce, while the other will not. They are sold as a pair. The Happy Ball consists of standard neoprene that…

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. The long, narrow spring measures 3/4" x 72", and can…

Our Lenz’s Law apparatus is a simple and effective way to demonstrate induction and Lenz’s Law of electrodynamics. The metal hoops (one open and one closed) are freely moving on a centrally mounted pin. When a magnetic field is introduced to the closed loop from a bar magnet, an electrical…

This calorimeter consists of two nested aluminum cans separated by a 1.7 CM thick styrofoam liner and a clear molded plastic lid with a filler cap. A plastic insulator ring protects the styrofoam insulation against damage and liquid spills. The inner reservoir has a capacity of 150 ML. A…

Prism Smooth Polished Glass Surface Optically Clear Individually Boxed

Lenses - Glass with ground edges - Double Concave

The Friction Rods are useful in a variety of electrostatic demonstrations. 603-1: Made of glass tubing and sealed on one end 603-2: Made for a solid glass rod and the edges of the glass are ground to a smooth finish 603-3: Made for a solid glass rod and the edges of the…

Strong alnico magnet with a magnetic pole on each end. It can be used for magnetic field demonstrations and a variety of other lab experiments. Magnet is 7.5cm long, 1.25cm in diameter, and weighs approximately 100 grams.

21st century New York Balance is ideal for demonstrating basic physics principles including levers and center of gravity. Set includes a demonstration balance support, three knife edge lever clamps, a half meter stick, one 50g hooked weight, and one 100g hooked weight. Includes activity guide.

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.

Solar motor is specifically designed for experiments using low starting voltage (0.5V) and current (25mA). Speed: 1000-5000 RPM. Motor is approximately 38mm long x 24mm in diameter. Shaft size is 8mm long x 2mm in diameter. Includes soldered-on 4" wire leads.

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…

Glass with ground edges - Double Convex

Equilateral prisms, made from high quality clear acrylic sheet with highly polished surfaces.

Accurate, non-rolling hexagonal masses are made of steel, and feature a durable black oxidized finish. Available in both customary and metric sizes.

Our meters are mounted in black plastic cases. Meters have a scale length of 75mm, offer +/- 2.5% accuracy and come with 5-way binding post and external calibrating screw. Meters are not protected against prolonged or significant overload. Stackable for storage.

Our ebonite friction rod can be used to experiment with and to observe friction. PRODUCT WARNINGS Our products are not toys . Use in a laboratory or educational setting only. Not for children 13 and under.

Our meters are mounted in black plastic cases. Meters have a scale length of 75mm, offer +/- 2.5% accuracy and come with 5-way binding posts and an external zero-setting screw. Meters are not protected against prolonged or significant overload. Stackable for storage.

Ideal for introducing and demonstrating the polarization of light.

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

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…

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,…