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عرض 1891–1905 من أصل 1963 نتيجة
Variable Electromagnet
The variable coil electromagnet has 6 different coil options:100, 200, 300, 400, 500 and 600 coils. A steel hook underneath gives students the opportunity to measure the strength of the magnetic field generated by varying different number of coils. A variable D.C. low voltage supply is required.
SKU: PH41164Variable Inductor
The enamelled wire winding and a cylindrical soft iron core are built into this unit. The iron core displacement inside the winding can manually adjusted by the knob to give precise measurements up to 1.3 H. Connections are made through 4 mm sockets.
Specifications:
Resistivity: 0.0165 W/m;
Inductance: 0.15 to 1.3 H;
Voltage: 30 V AC or 60 V DC.SKU: PH50586VIVariable Inertia Bar
This apparatus helps to demonstrate that the torque required to accelerate a flywheel depends upon its moment of inertia rather than it’s mass.A steel bar 790 x 12 mm is mounted at its centre on a sleeved spindle. The spindle is extended through a sleeve so that the bar may be rotated by a weight and string. Heavy adjustable masses are mounted on each end of the bar and may be clamped at any desired position enabling inertia to be varied.
SKU: PH10565BVariable Magnetic Field Coil
An enamelled copper wire solenoid is wound on a clear acrylic tube. The extreme ends of the solenoid are movable and the magnetic field can be varied by moving the extreme ends. 4mm sockets are provided to apply the current across the solenoid. Coil Dia 60 mm, Length 350 mm.
SKU: PH41150Variable Volume Micropipettes, Fully Autoclavable
FEATURES
Constructed of high quality plastic and combined with stainless steel piston for many years of dependable service. Individually calibrated as per procedure laid down in ISO 8655 standards, a calibration report is provided with each pipette.
Built-in, streamlined tip ejector facilitates easy tip ejection and access to narrow necked bottles and tubes.
New body design provide improved ergonomy for more comfort and less fatigue during operation.
User adjustment (re-calibration) can be performed easily.
Easy volume adjustment by turning the plunger even when wearing gloves. Plunger does not snag gloves.
Nine volume ranges cover the complete pipetting range from 0.2 µl to 10 ml offering a wide choice to select the most suitable model for any application.SKU: FAAVariable Volume Micropipettes, Semi Autoclavable
FEATURES
Constructed of high quality plastic and combined with stainless steel piston for many years of dependable service. Individually calibrated as per procedure laid down in ISO 8655 standards, a calibration report is provided with each pipette.
Built-in, streamlined tip ejector facilitates easy tip ejection and access to narrow necked bottles and tubes.
New body design provide improved ergonomy for more comfort and less fatigue during operation.
User adjustment (re-calibration) can be performed easily.
Easy volume adjustment by turning the plunger even when wearing gloves. Plunger does not snag gloves.
Nine volume ranges cover the complete pipetting range from 0.2 µl to 10 ml offering a wide choice to select the most suitable model for any application.SKU: VVVelocity Of Sound Apparatus
This dual purpose apparatus provides a compact facility for the measurement of the velocity of sound in air and also for the analysis of standing waves. It requires an audio signal generator and a dual beam oscilloscope (not included). A phase measurement between the speaker and microphone signals is made on an oscilloscope. The distance required to traverse through a 360° phase shift is noted. Knowing the frequency and distance, the speed of sound is computed. With the reflector in place a standing wave can be generated. Nodes and antinodes can easily be seen from the amplitude variations on the CRO.
SKU: PH36165Verification Of Boolean Identities and Demorgan’s Theorems
To verify the truth table of 3 input AND gate, OR gate, NAND gate, NOR gate, single input NOT gates, Boolean expressions and Demorgans theorems. Consists of 5V d. c. regulated power supply, 4 push-to-ON switches provided for selecting logic 1 and logic 0 , 2 Red LED output indicators , circuit diagram printed for 5 OR, 5 AND and 4 NOT gates and their respective ICs placed inside the cabinet and connections brought out at sockets.
SKU: PH93010Vernier Microscope
For measurement on two axes, with horizontal and vertical scales, heavy stand with leveling screws, and a carriage fitted with micrometer screw for fine adjustment. Another sliding carrier is provided on vertical bar also with micrometer screw for fine adjustment. Microscope tube is fitted with rack and pinion focusing. Stainless steel scales and verniers, horizontal scale 160 mm with vernier reading to 0.01 mm and vertical scale 140 mm with vernier reading to 0.01 mm. Ramsden eye-piece x 10 with crossline graticule and 50mm focus objectives Magnifier is provided to read vernier
SKU: PH30780Vibration Generator
To produce mechanical vibrations when used with a signal generator. The input is fed to a coil, which is mounted within the field of a cylindrical permanent magnet. The unit is mounted on a strong base and is enclosed in a plastic case. The coil and magnet assembly are protected from the entry of foreign particles. A threaded extension of the armature allows attachment of the item to be vibrated, e.g., plates for chladnis figure experiments. A specially designed coil system enables the unit to be operated at its maximum rating for a prolonged period without any damage due to overheating. Electrical input via a pair of 4 mm shielded sockets and oscillating mechanical output is available through a shaft at the top. Alocking arrangement provides safety to the apparatus during storage or transportation by blocking the motion of shaft. The unit is electrically secured by means of a fuse. Avoid long periods of sustained rapid vibration and keep dry as moisture will damage the mechanism
SKU: PH36214
