American Scientific, LLC · Columbus, Ohio · Exclusive U.S. Distributor of PHYWE Systems
American Scientific, LLC · Columbus, Ohio · Exclusive U.S. Distributor of PHYWE Systems
176 complete lab experiment sets for university-level physics, chemistry, and biology programs. Each set includes a detailed experiment guide and all required apparatus. 110V/60Hz adapted for U.S. labs.
The resistances of various DC conductors are determined by recording the current / voltage characteristic. The resistivity of metal rods and the contact resistance of connecting cords are calculated.
Principle The structures of molecules are not changed by their chemical environment in the gas phase.
If an emitter of sound or a detector is set into motion relative to the medium of propagation, the frequency of the waves that are emitted or detected is shifted due to the Doppler effect.
(no description provided)
(no description provided)
A classic method of determining the velocity of a projectile is to shoot it into a resting mass hung as a pendulum. The projectile remains in the pendulum and swings with it.
The conductivity of a germanium test sample is measured as a function of temperature. The energy gap is determined from the measured values.
Caliper gauges, micrometers and spherometers are used for the accurate measurement of lengths, thicknesses, diameters and curvatures.
A boiling point diagram shows the boiling points of a binary mixture as a function of the vapour / liquid equilibrium of the mixture at constant pressure.
The boiling point of a solution is always higher than that of the pure solvent. The dependence of the temperature difference (elevated boiling point) on the concentration of the solute can be...
In the first part of the experiment, benzaldehyde disproportionates under the effect of alkalis to alcohol-soluble benzyl alcohol and water-soluble benzoic acid that precipitates when the aqueous...
Metal spheres with different radii and a spherical capacitor are charged by means of a variable voltage. The induced charges are determined with a measuring amplifier.
Complete university experiment set with guide and apparatus. Contact us for the full component list.
The current-voltage characteristics of a solar cell are measured at different light intensities, the distance between the light source and the solar cell being varied.
A capacitor is charged by way of a resistor. The current is measured as a function of time and the effects of capacitance, resistance and the voltage applied are determined.
Square and round metal plates are brought to vibrate through acoustic stimulations by a loudspeaker.
Chromatographic separation processes are very important for analytical chemistry. Their relatively simple technique and the possibility to separate even the smallest portions of mixtures explain the...
The 3rd Newtonian Axiom: A force from body A on body B is always accompanied by a force from body B on body A of the same magnitude but in the opposite direction.
The Archimedes' principle: The static buoyancy of a body in a medium is as great as the weight of the medium displaced by the body.
Hooke's law: The elastic deformation is proportional to the load applied. Benefits All-in-one experiment - no lengthy setup, no interface necessary Includes all components and sensors necessary for...
Benefits All-in-one experiment - no lengthy setup, no interface necessary Includes all components and sensors necessary for measurement Stable tripod material free measurement software measureAPP In...
(no description provided)
Many metals, in particular transition elements, can form complexes with charged or neutral ligands. Complex formation reactions are equilibrium reactions.
Gases are condensing when they are cooled and at high pressure. In this experiment butane is condensed by cooling it to ca. -15 °C.
(no description provided)
Conducting spheres with different diameters are charged electrically. The static potentials and the accompanying electric field intensities are computer-assisted determined by means of an electric...
A small electrically charged ball is positioned at a certain distance in front of a metal plate lying at earth potential.
Complete university experiment set with guide and apparatus. Contact us for the full component list.
Investigate the cracking of hydrocarbons using a model experiment.
The force acting on a current-carrying conductor loop in a uniform magnetic field (Lorentz force) is measured with a balance.
The density of water and glycerol is determined as a function of temperature using the Mohr balance.
Complete university experiment set with guide and apparatus. Contact us for the full component list.
All gases may be considered, to a first approximation, to obey the ideal gas equation which relates the pressure p , volume V , temperature T and amount of substance n of a gas.
Didactic setup to train and demonstrate the determination of molar masses by way of a measurement of the boiling point elevation.
In order to train and demonstrate the determination of molar masses by way of a measurement of the freezing-point depression, urea or hydroquinone are used as test substances.
A constant magnetic field, its magnitude and direction known, is superimposed on the unknown earth magnetic field.
(no description provided)
The bomb calorimeter is used to completely burn substances in an excess of oxygen. The heat of combustion released is absorbed by the calorimetric vessel in which the bomb is immersed, and results in...
Complete university experiment set with guide and apparatus. Contact us for the full component list.
Standard molar enthalpies of formation Δ B H Φ are important compiled thermodynamics tabulation quantities for calculating standard enthalpies of reaction for any arbitrary reaction.
The heat of reaction generated during the complete combustion of 1000 g of solid or liquid fuel is known as the calorific value H.
Experimental setup to determine the heating capacities of foodstuffs, commercially available solid fuels and gases.
The part of the surroundings perceived with an unmoved eye is called the visual field. In contrast, the field of view is that part of the surroundings perceived by the eyes when allowed to move...
Principle The molar mass of a liquid is to be determined by evaporating a liquid at constant temperature and pressure, and measuring the volume of vapour formed using a calibrated gas syringe.
(no description provided)
Principle The viscosity of a liquid is effectively determined by the strength of the intermolecular attractive forces.
The electric constant is determined by measuring the charge of a plate capacitor to which a voltage is applied.
The distribution of intensity in the Fraunhofer diffraction pattern of a slit and at an edge is measured.
Pin hole diaphragms and circular obstacles are illuminated with laser light. The resulting intensity distributions due to diffraction are measured by means of a photo diode.
The diffracted light from a periodic line grating is observed with a goniometer. The diffraction angles of spectral lines in different orders of diffraction are measured for the spectral lines from a...
The coloured indicator thymol blue is a weak acid that is partially dissociated in aqueous solution, whereby non-ionized and ionized forms show absorption maximums at different wavelengths in the...
At constant temperature and under constant pressure, a dissolved substance distributes itself between two immiscible liquids in a constant concentration ratio.
Genetically determined growth processes in plants are primarily triggered or inhibited by special phytohormones.
Pressures and temperatures in the circulation of the heat electrical compression heat pump are measured as a function of time when it is operated as a water-water heat pump.
A uniform electric field E is produced between the charged plates of a plate capacitor. The strength of the field is computer-assisted determined with the electric field strength meter, as a function...
The electrical conductivity of copper and aluminium is determined and the Wiedmann-Franz law is tested.
Electrogravimetry is an important analytical method for the quantitative determination or separation of species in solution.
The attenuation of an electron particle stream passing through a material layer depends both on the thickness of the layer and on the mass coverage, resp. the "mass per unit area".
With electron spin resonance (ESR) spectroscopy compounds having unpaired electrons can be studied.
Principle Smoke consists of particles of solid substances suspended in gas. Fog is made up of suspended droplets.
Thermal radiation can be measured at all surfaces as long as their temperature differs from that of the surrounding. Therefore it applies that the hotter an object is, the more radiation it emits.
The intensity of gamma-radiation decreases when it passes through solid matter. The attenuation can be the result of Compton scattering, the photo effect or the pair production.
A study is made of the connection between the energy E of alpha-particles and the path x travelled by them in air at standard pressure.
Enzymatic degradation of the cellular respiratory poison hydrogen peroxide in the liver.
Microorganisms are ubiquitous, i.e. they are present everywhere around us. This fact can be proved by touching the objects that are to be examined in view of the presence of microorganisms against...
In an imaging system, such as a microscope, image formation can be understood as the interference of light diffracted by the sample and colected by the objective lens.
The angle of rotation of the polarization- plane of plane polarised light through a flint glass rod is found to be a linear function of the product of the mean flux-densitiy and the length of the...
Principle Faraday's first law states that the mass of a material separated by electrolysis is proportional to the quantity of electricity which flowed through the solution.
The aim of this experiment is to study the behaviour of nickel, tungsten, and bismuth rods in a strong, inhomogeneous magnetic field.
The alpha-spectrum of an open 241-Am-emitter is measured with a semiconductor a-detector. In connection with a multi channel analyzer the main parts of the spectrum are investigated.
Complete university experiment set with guide and apparatus. Contact us for the full component list.
The aim of this experiment is to study the relationship between the ultrasonic Doppler effect and the flow velocity or the Doppler angle.
Complete university experiment set with guide and apparatus. Contact us for the full component list.
The aim of this experiment is to film a high-speed video of a sphere falling from the height of fall h .
A sphere falls freely over certain distances. The falling time is measured and evaluated from diagrams. The acceleration due to gravity can be determined.
The freezing point of a solution is lower than that of the pure solvent. The depression of the freezing point can be determined experimentally using a suitable apparatus (cryoscopy).
In order to prevent nutrient media and cultures from being contaminated with microorganisms that adhere to the working equipment, the equipment, nutrient media, and nutrient solutions must be...
Investigation of the temperature increase during the fermentation of sugar by yeast cells. The experiment allows to address metabolic processes such as glycolysis, fermentation, aerobic and anaerobic...
The half-life of a Ba-137 m daughter substance eluted (washed) out of a Ca-137 isotope generator is measured directly and is also determined from the increase in activity after elution.
The Hall effect in thin zinc and copper foils is studied and the Hall coefficient determined. The effect of temperature on the Hall voltage is investigated.
The resistivity and Hall voltage of a rectangular germanium sample are measured as a function of temperature and magnetic field.
The resistivity and Hall voltage of 2 rectangular germanium samples ( n- and p-) are measured as a function of temperature and magnetic field.
Investigate the reaction of ethyl iodide with lithium and the following reaction of ethyllithium with ethyl iodide.
Heat is added to a gas in a glass vessel by an electric heater which is switched on briefly. The temperature increase results in a pressure increase, which is measured with a manometer.
Heated specimens are placed in a calorimeter filled with water at low temperature. The heat capacity of the specimen is determined from the rise in the temperature of the water.
The difference between spontaneous and stimulated emission of light is demonstrated. The beam propagation within the resonator cavity of a He-Ne laser and its divergence are determined, its stability...
The validity of Hooke's law is determined for two helical springs with different spring constants.
The hearing range depends greatly on age. While tones above the upper acoustic threshold are not perceived at all, individual sounds under the lower hearing threshold are perceived as a continuous...
A permanent magnet drops through a coil with different velocities. The change in the magnetic flux generates an induced voltage pulse.
A square wave voltage of low frequency is applied to oscillatory circuits comprising coils and capacitors to produce free, damped oscillations.
A square wave voltage of low frequency is applied to oscillatory circuits comprising coils and capacitors to produce free, damped oscillations.
Complete university experiment set with guide and apparatus. Contact us for the full component list.
The radiation emitted during the decay of the 137 Cs isotope is measured with a scintillation detector and the energyspectrum determined with a pulse height analyzer.
The inverse square law of distance is demonstrated with the gamma radiation from a 60-Co preparation, the half-value thickness and absorption coefficient of various materials determined with the...
A stream of gas is fed to a throttling point, where the gas ( CO 2 or N 2 ) undergoes adiabatic expansion.
The inversion reaction of saccharose, which is catalysed by protons, produces invert sugar, which is a mixture of glucose and fructose.
Kirchhoff's laws are verified by measuring current, voltage and resistance in series and parallel circuits.
The volocities of two gliders, moving without friction on a demonstration track, are measured before and after collision, for both elastic and inelastic collision.
The momentum of inertia of the gyroscope is investigated by measuring the angular acceleration caused by torques of different known values.
Complete university experiment set with guide and apparatus. Contact us for the full component list.
The spatial distribution of the field strength between a pair of coils in the Helmholtz arrangement is measured.
The magnetic field along the axis of wire loops and coils of different dimensions is measured with a teslameter (Hall probe).
A current which flows through one or two neighbouring straight conductors produces a magnetic field around them.
A magnetic field of variable frequency and varying strength is produced in a long coil. The voltages induced across thin coils which are pushed into the long coil are determined as a function of...
A conductor loop carrying a current in an uniform magnetic field experiences a torque. This is determined as a function of the radius, of the number of turns and the current in the conductor loop and...
Linear polarised light passes through a polarisation filter. Transmitted light intensity is determined as a function of the angular position of the polarisation filter.
A mass, considered as of point form, suspended on a thread and subjected to the force of gravity, is deflected from its position of rest.
By means of the model apparatus for kinetic theory of gases the motion of gas molecules is simulated and the velocities determined by registration of the throw distance of the glass balls.
(no description provided)
The intensity of the light is modulated and the phase relationship of the transmitter and receiver signal compared.
Complete university experiment set with guide and apparatus. Contact us for the full component list.
In this experiment, a metal test body is rotated and heated by the friction due to a tensed band of synthetic material.The mechanical equivalent of heat for problem 1 is determined from the defined...
The relationship between torque and angle of rotation is determined when metal bars are twisted. The hysteresis curve is recorded.
The ultrasonic Doppler effect is used for studying the laws of steadily and laminarly flowing liquids in a tube circuit, which form the basis of numerous technical applications.
Some microorganisms living in soil and water are capable of utilizing mineral oil compounds as carbon and energy sources.
A number of completely miscible two component mixtures are prepared to investigate the three component acetic acid / chloroform / water system.
A flat bar is supported at two points. It is bent by the action of a force acting at its centre. The modulus of elasticity is determined from the bending and the geometric data of the bar.
Demonstration the electrolysis of molten sodium chloride to obtain chlorine and sodium.
Coplanar forces (weight, spring balance) act on the moments disc on either side of the pivot.
The moment of inertia of a solid body depends on its mass distribution and the axis of rotation. Steiner's theorem elucidates this relationship.
In solutions containing different-coloured substances the concentrations of the dyes can be anlysed by spectrometry without prior separation of the substances.
Complete university experiment set with guide and apparatus. Contact us for the full component list.
The distance-time law, the velocity time law, and the relationship between mass, acceleration and force are determined with the aid of the demonstration track rail for uniformly accelerated motion in...
Complete university experiment set with guide and apparatus. Contact us for the full component list.
In a Newton's rings apparatus, monochromatic light interferes in the thin film of air between the slightly convex lens and a plane glass plate.
Study plant cells undergoing mitosis under the microscope!
Due to intermolecular interactions, the total volume measured when two real liquids (e.g. ethanol and water) are mixed deviates from the total volume calculated from the individual volumes of the two...
As well as the cooling and the heating capacity and efficiency rating of a Peltier heat pump are determined under different operating conditions.
A linearly polarized standing transverse wave is generated on a rubber band with a square cross-section by means of a vibration generator.
This experiment shows that oxygen is produced during photosynthesis when the plant is exposed to light, while oxygen is consumed in the dark by the cellular respiration of the plant.
The rotation of the plane of polarisation through a sugar solution measured with a half-shade polarimeter and the reaction rate constant for the inversion of cane sugar determined.
The temperature requirements of animals with regard to their environment differ widely: they vary from temperatures just below 0°C for arctic and antarctic animals to temperatures of around 50°C for...
This is a model experiment to show the industrial blast furnace process to produce iron from iron(III) oxide.
Complete university experiment set with guide and apparatus. Contact us for the full component list.
A steel ball is fired by a spring at different velocities and at different angles to the horizontal.
Complete university experiment set with guide and apparatus. Contact us for the full component list.
The discussion of healthy nutrition focuses on the fat content of foodstuffs. For this reason, it is important to know the exact fat content of individual foodstuffs.
Complete university experiment set with guide and apparatus. Contact us for the full component list.
(no description provided)
The organic dye crystal violet is decolorised in an alkaline medium. This reaction takes place according to a velocity-time law, hence it is a reaction of the first order.
The ripple of the output voltage of various rectifier circuits is measured as a function of the load current strength and the charging capacitance.
The experiments described here are highly suitable for demonstrating the different affinity of various metals in view of oxygen.
The reduction, as the reversal of the oxidation, can be achieved thermally or with the aid of a reducing agent.
Ohmic resistances, inductances and capacitances are determined in a Wheatstone bridge circuit operated on AC.
In a semi-conductor thermogenerator, the no-load voltage and the short-circuit current are measured as a function of the temperature difference.
A number of different mixtures of phenol and water are prepared and heated until complete miscibility is achieved.
Benefits Neon-filled narrow beam tube for perfect visibility of the electron beam High-precise and easy to perform measurements with the built-in fluorescent ladder construction Suitable for...
Different temperature increases show that substances respond differently to supplied energy and therefore have different specific heat capacities.
The specific heat capacity describes the ability of a material to absorb thermal energy. It can be determined by measuring the rate of temperature change if both the mass of the heated substance and...
Principle The most significant process on earth takes place inside the chloroplasts of the cell, i.e. photosynthesis.
An elegant and simple apparatus for carrying out water vapour distillations: the advantage of this arrangement is that it eliminates the need for a separate vapour generator, making it possible to...
According of Stefan-Boltzmann's law, the energy emitted by a black body per unit area and unit time is proportional to the power "four" of the absolute temperature of the body.
An alpha-spectrometer, consisting of a silicon surface barrier layer detector, a preamplifier, a pulse height analyser and a recording device for registration of the spectra is calibrated by means of...
If a circular disc separated into various differently coloured sectors is rotated by a motor so fast that the eye can no longer distinguish the colours, a mixed colour is then perceived.
Iodine, whose melting point is at 113.5 °C, evaporates clearly below this temperature. It passes from the solid state directly to the gaseous state. This process is known as sublimation.
The contact process is currently used in the chemical industry to produce sulphuric acid in the high concentrations needed for industrial processes.
Complete university experiment set with guide and apparatus. Contact us for the full component list.
The force is measured on a ring shortly before a liquid film tears using a torsion meter. The surface tension is calculated from the diameter of the ring and the tear-off force.
The temperature dependence of an electrical parameter (e.g. resistance, conducting-state voltage, blocking voltage) of different components is determined.
Complete university experiment set with guide and apparatus. Contact us for the full component list.
The main shoot of a plant generally follows a perpendicular direction away from the centre of gravity of the earth (negative geotropism), whereas the main root grows towards the centre of gravity...
(no description provided)
The thermal conductivity of copper and aluminium is determined in a constant temperature gradient from the calorimetrically measured heat flow.
As excitation of the light-perceptive cells of the retina always takes a little longer than the light stimulus, only a limited number of stimuli per unit of time can be processed (time-related...
Demonstrate that a body which can be rotated about an axis on which forces act eccentrically remains at rest if it is counterbalanced by the torques induced by the forces (equilibrium of torques).
Bars of various materials will be exciting into torsional vibration. The relationship between the vibration period and the geometrical dimensions of the bars will be derived and the specific shear...
An alternating voltage is applied to one of two coils (primary coil) which are located on a common iron core.
The high-pressure steam apparatus makes it possible to measure steam pressure in a temperature range of 100-250 °C. This allows for investigations to be performed on real gases and vapours.
The vapour pressure of water in the range of 40 °C to 85 °C is investigated. It is shown that the Clausius-Clapeyron equation describes the relation between temperature and pressure in an adequate...
Investigate the oscillation behaviour of a pendulum (rod pendulum) by varying the magnitude of the components of the acceleration of gravity which are decisive for the oscillation period.
The velocity of sound in air is determined by measurement of sound travel times across known distances.
Cork dust in a glass tube is set into tiniest motion by a sound wave. If the frequency of the sound wave matches the natural frequency of the volume in the glass tube, a standing wave will form.
The velocity of sound in acrylics shall be determined by time of flight reflection technique with an ultrasonic echoscope.
Due to internal friction among their particles, liquids and gases have different viscosities.
The Wheatstone bridge circuit is used to determine unknown resistances. The total resistance of resistors connected in parallel and in series is measured.
The irradiation of iodine, barium (sulfat), silver and tin with soft gamma-radiations gives rise to Ka radiations characteristics of these elements.
