Samtech Instruments

Hare’s Apparatus experiment is a classic experiment in chemistry that involves the electrolysis of water. The experiment uses a setup known as Hare’s Apparatus, which consists of a Hoffman voltameter and two test tubes. The purpose of the experiment is to demonstrate the decomposition of water into its constituent gases, hydrogen and oxygen, using an electric current.

In the experiment, water is added to the Hoffman voltameter, and an electric current is passed through the water using two carbon electrodes. As the current passes through the water, it causes the water to electrolyze, resulting in the production of oxygen gas at the positive electrode and hydrogen gas at the negative electrode. These gases can then be collected in the test tubes and their properties can be observed.

The spot reflecting galvanometer is based on the deflection of a coil suspended in a magnetic field. The coil is connected to a pointer or mirror system, and its movement corresponds to the current flowing through it. Here’s a more detailed breakdown:

1. Electromagnetic Interaction:

   • The galvanometer typically consists of a coil of wire placed in a uniform magnetic field. When an electrical current passes through the coil, the interaction between the current and the magnetic field produces a torque (a rotational force) on the coil, causing it to rotate.

2. Mirror System:

   • To detect this small deflection, a mirror is attached to the coil. The mirror is positioned in such a way that when the coil rotates, the mirror reflects light. This light is usually produced by a beam from a lamp or LED.

3. Light Spot and Scale:

   • The light spot from the mirror is reflected onto a scale, often a vertical scale with precise markings. The movement of the light spot along the scale directly correlates to the current flowing through the coil. This amplification of movement makes it easier to see small changes in current.
   • The scale may be graduated to give precise readings, with each division corresponding to a specific amount of current.

4. Zeroing Mechanism:

   • To ensure accurate readings, spot reflecting galvanometers are often equipped with a zeroing mechanism to return the needle or mirror to a neutral position when no current is flowing. This ensures that any deflection observed is due solely to the current being measured.

Connecting a Sodium Lamp transformer with a sodium vapour lamp to control the voltage and current supplied to the lamp to ensure proper operation and longevity. 

The transformer steps down the line voltage to the appropriate level for the lamp and also helps to regulate the lamp’s power usage, which can help to reduce energy consumption and prolong the lamp’s lifespan.

 A Sodium Lamp transformer can also isolate the lamp circuit from other electrical systems, which can help improve safety and reduce the risk of electrical interference.

An LED Characteristics Apparatus is a device used to measure and analyze the electrical and optical properties of LEDs, such as current, voltage, and light output.

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• Eddy Current Apparatus demonstrates key physics concepts like Eddy Current and Lenz's Law.
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• When a magnet is dropped through the tube, it creates magnetic forces that oppose the motion, visually showcasing Lenz's Law.
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• The Kit comprises two aluminium tubes, a wooden stand, one cylindrical magnet, and an iron cylinder.
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• Laser Ray Optics Kit includes a variable laser ray box, 12 different acrylic lenses, a mirror, and an activity mat with printed scales and angles.
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• Everything needed to demonstrate the basic principles of geometrical optics
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• It comes packaged in a convenient, impact-resistant, foam-lined black carrying case, which keeps everything protected and organized, ready to use.
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• This Tuning fork set of 8, includes 8 high-quality tuning forks, meticulously crafted for precision and durability.
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• Each fork is chrome plated, ensuring a smooth finish that enhances the product's aesthetics and lifespan.
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• These tuning forks are delivered in a protective thermocol case, designed to keep each fork secure and organised, making transportation and storage convenient.
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• This set offers versatility and reliability, whether for musical tuning, sound therapy, or educational purposes.
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• Petrol Engine Model Consists of Moving Parts: Crankshaft, piston, throttle valve, float, crank.
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• Ignition light can be activated by using 2 AA Batteries, Light illuminates on the compression stroke (Batteries not included)
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• Turn the hand crank on this model, and you will see all the functioning stages of a 2 stroke air-cooled gasoline motor.
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• Made of cast alloys and abs plastic, built for years of demonstrations
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• Used to explain that the buoyant force on an object submerged in a fluid is equal to the weight of the fluid that is displaced by that object (Archimedes Principle)
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• Can be used to calculate the density of any liquid
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• Set contains a regular-shaped metal solid, a 250ml capacity glass beaker with spout, a 50ml plastic beaker with spout and a Newton meter.
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• Excellent demonstration tool for science classrooms
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• Bicycle Wheel Gyroscope apparatus features a 20�x1.75� bicycle wheel with two handles and a rubber tire, mounted on a 36� L-shaped metal stand with a sturdy wooden base.
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• It demonstrates concepts of rotational physics, including angular momentum, torque, and gyroscopic precession.
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• Spin the wheel and hang it from the axle using a hooked rope in a vertical position; the wheel will process while keeping the rope vertical.
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