Set of two 75 mm diameter speakers for use in acoustics experiments such as interference. The stand is designed to avoid concealing the speaker and obstructing the sound propagation from the cone. Frequency range, 0 to 5000 Hz; maximum efficiency at 400 Hz; output, 0.2 watts; impedance, 45 Ω.

These cart are tough enough to withstand the worst .more importantly their axles are aligned to insure that they roll a true line without deviation, minimizing drag and making for accurate data. They give superior data for all quantitative kinematics experiments.

This is a simple device showing the magnetic effect. A simple rod mounted on a round plastic base . when two permanent magnts are introduced in the rod with the opposite poles facing sides shows the magnetic effect.

This is a simple rugged plastic bell.and is ideal for a wide range of experiments.included sturdy pressed plastic box. Pivoted armature, double coil. And nickel plated gong.

A Large 3 -12 digit LCD display and low cost makes this meter ideal for begining electronics courses. Meter includes coltsohmsresistancecurrent plus transistor and diode testing.

A Large 3 -12 digit LCD display and low cost makes this meter ideal for begining electronics courses. Meter includes coltsohmsresistancecurrent plus transistor and diode testing.

These cart are tough enough to withstand the worst .more importantly their axles are aligned to insure that they roll a true line without deviation, minimizing drag and making for accurate data. They give superior data for all quantitative kinematics experiments.

Set of two 75 mm diameter speakers for use in acoustics experiments such as interference. The stand is designed to avoid concealing the speaker and obstructing the sound propagation from the cone. Frequency range, 0 to 5000 Hz; maximum efficiency at 400 Hz; output, 0.2 watts; impedance, 45 Ω.

This is a simple rugged plastic bell.and is ideal for a wide range of experiments.included sturdy pressed plastic box. Pivoted armature, double coil. And nickel plated gong.

This is a simple device showing the magnetic effect. A simple rod mounted on a round plastic base . when two permanent magnts are introduced in the rod with the opposite poles facing sides shows the magnetic effect.