Terminals on these lamp boards let you connect lamps in series or parallel. Lamp board features removable shunt wires that allow for quick changing from parallel to series or any combinations of the two. All units have plastic bases with rubber feet. Small incandescent bulbs included. Available in three or five-socket sizes.
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AA cell battery holder with 6" connector cords in red and black. Made of unbreakable plastic. Curved sides help prevent the battery from falling out when it is upside down. Ages 7+
The Economy Spark Timer is ideal for determining the rate of acceleration is a falling weight, calculating the speed of a moving cart, or studying the forces of friction. -Students Calculate Speed and acceleration -Items Enclosed for Safety - Cord and Plug Included for 110 VAC Operation -Free-Fall Weight Included The measured object pulls a paper strip through the timer…
To demonstrate that gravitational acceleration down an incline is independent of the falling mass. The two wheeled trolley runs across the room on an inclined overhead cable. Mounting hardware, 10.8 m of cable, and full operating instructions are supplied with the unit. Size is 15 x 10 cm. Mass set and hanger are not supplied with apparatus.
Acrylic demonstration lenses include one each of double convex, double concave, plano-convex, Plano concave, concavo-convex, and convexo-concave. The focal length of each lens is 50 mm. The set includes a storage case.
Made of polished acrylic 15 mm thick, the set is provided in a convenient storage box. Set consists of: rectangle (75 mm sides), double convex lens and two double concave lenses with a focal length of about 10 cm, equilateral prism, and semi-circular block.
Sliding weights on each prong of the tuning fork can be adjusted to deliver tones at C-128, D-144, E-160, F-170.7, G-192, A-213.3, and B-240 frequencies.
Excellent for all types of low voltage experiments, these 24g connector cord feature 1" sheathed alligator clips on each end. Sold in packs of 10 (2 each of white, yellow, black, red, and green). Ages 7+ Each set includes 10 connector cords.
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Demonstrate that although the mass and volume for each example are different, the density and specific gravity will remain the same. Includes 12 aluminum cylinders (1/2 in. dia.) of various lengths in a wood storage block.
General purpose student bench meters with full-scale accuracy of ±2.5% and overload protection. Features include large 3" scales, external zero-adjust calibration, and fully enclosed plastic cases with inclined meter faces.
Demonstrate the mechanics of fluid by visually comparing the viscosity of four different liquids. Each tube contains a different weight liquid and a 3/8 in. plated steel ball. The balls are lifted just above the line on the tube with a magnet and then released. Students compare the time for the balls to fall. Liquids are not included. Comes with…
This simple device demonstrates how gravity works. By Perfectly distributing weight on the tips of the wings, and placing its mass near the tip of its beak, the equilibrium of the bird stabilized. This allows the bird to balance on whatever object it is placed upon! 6" x 6" x 2.5", 0.1lb.
A simple apparatus for demonstrating thermal expansion. The apparatus consists of a brass ball and ring. The cold ball passes through the ring but does not pass when heated. The brass ball is connected to the rod with a chain.
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Heavy duty, both ball, and ring are mounted on separate handles. When cool, the 25 mm brass ball passes easily through the matching brass ring; when hot, it won't go through.
Demonstrate that the forward motion of a ball ejected vertically is the same as that of the vehicle from which it was ejected. A car with ball bearing wheels and vertically mounted spring loaded barrel. The barrel permits two spring tensions. Complete with a 25 mm steel ball and release pin.
To illustrate the expansion of the metal on heating and contraction on cooling, a steel bar of length 100 x 10 mm and a plated brass gauge with a cutout to accommodate the bar and two holes through which the bar passes when cold.
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This battery-powered timer produces 30 to 50 marks per second for dynamic experiments. 1.5V motor operates on two D-cell batteries (not included). A wooden base improves stability, reduces vibration, and permits attachment to a ring stand post. The striker mechanism acts against an aluminum plate to produce an improved-dot definition on the ticker tape.
To Investigate the relationship between the speed of a fluid and its pressure. Consists of a glass Venturi tube with two different diameters. One pair holds a U-shaped tube in which a color liquid can be placed to demonstrate the different pressures exerted when air is blown through the tube. It includes two rubber tubes and a glass Venturi tube…
