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…
