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عرض 991–1005 من أصل 2204 نتائج
Electric Motor St. Louis
The motor consists of a two pole armature mounted between the ends of two bar magnets. The armature has a two section commutator and a pair of slip-rings on its shaft and is so constructed that the wire cannot slip off the iron core. The upper bearing and brushes for the commutator are mounted on a strong upright. Separate brushes are provided for the commutator and for slip rings and each are connected to a terminal. The magnets are held in position by thumb screws.
SKU: PH50215Electric Motor, Demonstration
A simple form of D.C. motor with 2 pole armature wound with insulated copper wire and a permanent magnetic field provided by a removable bar magnet, with a commutator and phosphor bronze brushes connected to 4 mm sockets, open construction, all parts visible.
SKU: PH50213Electrolysis of Water
Economical and compact design to observe the electrolysis of water and collect small volumes of hydrogen and oxygen gases. Consists of a stand assembly, electrodes, 2 attached wires with alligator clips, 2 test tubes, and trough. Requires a 6- or 9-V battery (not included). Supplied without solutions. With instructions.
SKU: CH10938Electromagnet Setup
This set up includes a U-shaped laminated iron core (40 x 40 mm cross-section) mounted on a wooden base, two soft iron poles and two coils for producing magnetic field between the poles. The setup also includes support stands for mounting external Hall Probe and Gauss Meter Probe.
SKU: PH93225EElectromagnetic Field Demonstrator
This apparatus demonstrates the magnetic field patterns associated with the different shapes of current carrying conductors. Comprises three conductors, each of different shape/configuration – straight rectangular, circular loop and solenoid all mounted on a plastic base. Each configuration is provided with a pair of 4 mm sockets to connect them to a low voltage DC power source, with output current not exceeding 5 A. With the included iron filings and 8 magnetic compasses, you can investigate the associated field and flux patterns.
SKU: PH41259Electromagnetic Induction Demonstrator
Electromagnetic Induction Demonstrator kit is used for demonstrating the important experiments performed by Faraday and how they lead to some of the significant conclusions in electromagnetism. It is designed to perform studies even beyond the basic experiments. It comprises of three solenoids of 20, 40 and 80 turns, each of identical cross section, mounted on a transparent base along with a milliammeter. These three coils of different lengths are provided to understand the effect of length of coil on induced current. Repeatedly inserting a magnet into the coil and removing it causes electric current to flow through the coil, which can be read directly from the milliammeter. Also notice that the milliammeter shows zero current when the magnet is not moving. Using this apparatus, students can study correlations between induced current to that of magnetic field strength, number of turns of coil, magnetic field polarity and speed. Requires 1.5 V dry cell battery (not included)
SKU: PH41288
