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Product Image-765-1131

Planck's constant, experimental equipment

Varenummer: (765-1131)
Leverandør: OSRAM
Beskrivelse: Equipment for demonstrating photoelectric power and determining Planck's constant. A photocell is equipped with filters that only transmit light of a certain wavelength. The photocell is illuminated with light from a Hg lamp. The potassium cathode then emits electrons that pass over to the unlit anode. Over time, a voltage arises that prevents new electrons from reaching the anode. The resulting voltage is measured with a measuring amplifier and a voltmeter. The measurement is repeated with filters for different wavelengths. Photocell and Hg lamp are equipped with magnets at the bottom for stable installation on the mounting plate. List of equipment:
UOM: 1 * 1 Items
Product Image-765-0600

Franck-hertz tries with

Varenummer: (765-0600)
Leverandør: ELWE LEHRGERAETEBAU KLINGENTHA
Beskrivelse: Franck-Hertz's experiment is one of the best ways to show the quantum properties of atoms. The experiment verifies the excitation energy of the Hg atoms through collisions with free electrons. Franck-Hertz tubes consist of an oxide cathode, gallery anode and a collection electrode. The evacuated tube contains a drop of Hg. Before starting the measurements, the pipe must be heated to 200 °C, partly to increase the pressure of the Hg steam and partly to obtain a sufficient probability of collision. When the temperature in the tube has become constant, the cathode is heated and a direct voltage which can be varied in the range 0 to 50 V is connected between the cathode and the anode. When the counter voltage is set to about -1,5 V and the anode voltage increases slowly from 0 V, the electrons will soon reach speeds in the acceleration range of the tube so that an increasing part of the primary current reaches the collector electrode. As the velocity of the electron flux approaches the lowest excitation level of the Hg atoms (4,9 eV), the electrons of the Hg atoms are capable of leaving the atoms and thus losing some of their velocity. The collector current drops to a minimum value. The Hg atom then emits its 253,7 nm ultraviolet line and then returns to its normal energy level. As the acceleration voltage increases further, the current reaching the collector electrode will increase again. This process is repeated periodically many times.
UOM: 1 * 1 Items

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Product Image-201-0216

Capillary tube on foot

Varenummer: (201-0216)
Leverandør: GLASWARENFABRIK KARL HECHT
Beskrivelse: Five communicating glass tubes with different inner diameters. Used to show capillary forces and how they are affected by the inner diameter of the pipes.
UOM: 1 * 1 Items
Product Image-BE-401

Experimentation kits, physical properties of proteins

Varenummer: (BE-401)
Leverandør: G-Biosciences
Beskrivelse: The physical properties of proteins kit is a lab activity that enables students to investigate the physical properties of several different proteins. Students will learn about protein solubility and how it is affected by various parameters; including temperature, pH, salt and dielectric constant. They will understand about protein precipitation due to pH, high salt and in the presence of organic solvents and about protein denaturation as a result of high temperature. In addition, the kit will demonstrate how non-protein agents, such as detergents drastically alter the physical properties of protein molecules and as a result, understand the importance of detergents in protein solubilisation. This lab activity involves analysis of three different types of pure proteins and then students alter some of those properties with a detergent and re-examine physical properties of those proteins. Students are challenged to consider how physical properties of protein molecules can be exploited for purification and characterisation of proteins and apply their findings on a test sample of complex tissue extract.
UOM: 1 * 1 Each
Product Image-765-0969

Communicating tubes

Varenummer: (765-0969)
Leverandør: GLASWARENFABRIK KARL HECHT
Beskrivelse: Five glass tubes of different shape and inner dimensions. Down to each other. When filling the liquid in the pipes, it is clear that the height of the stowage in the tubes. pipes are independent of the design of the pipes. Comes with foot.
UOM: 1 * 1 Items
Product Image-216-0428

Pneumatic trough, pp, Nalgene®

Varenummer: (216-0428)
Leverandør: Thermo Fisher Scientific
Beskrivelse: Replace metal-type troughs with the polypropylene pneumatic trough.
UOM: 1 * 1 Items

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Product Image-DIDAPOF010112

Standard prismatic optical bench, DidaFirst

Leverandør: DIDALAB
Beskrivelse: Economical, recent design of prismatic optical bench

Product Image-BINH1002727

Analogue oscilloscopes

Varenummer: (BINH1002727)
Leverandør: 3B Scientific
Beskrivelse: Educational Materials, Electricity/Magnetism, Ansøgning: Physics, Analogue oscilloscope, 30 MHz, microprocessor controlled
UOM: 1 * 1 Items

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Product Image-DIDAPOD013132

Diode laser, green, Class II and IIIa

Varenummer: (DIDAPOD013132)
Leverandør: DIDALAB
Beskrivelse: Extremely luminous beam, ideal for classroom experiments. Class IIIa (5 mW Power)
UOM: 1 * 1 Items
Product Image-765-0154

Monochord

Varenummer: (765-0154)
Leverandør: CORNELSEN EXPERIMENTA
Beskrivelse: Educational Materials, Waves and Oscillations, Ansøgning: Physics, Monochord
UOM: 1 * 1 Each

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Product Image-765-0206

Melting gutter

Varenummer: (765-0206)
Leverandør: CORNELSEN EXPERIMENTA
Beskrivelse: Circular gutter made of aluminum sheet with insulating handle. Fits U-core 765-1077 and was used, among other things, when demonstrating the principle of induction furnaces.
UOM: 1 * 1 Items

Market Source Item This is a MarketSource item. Additional charges may apply

Product Image-765-0155

Strings for monochord

Varenummer: (765-0155)
Leverandør: CORNELSEN EXPERIMENTA
Beskrivelse: Educational Materials, Waves and Oscillations, Ansøgning: Physics, Strings for monochord
UOM: 1 * 3 Items

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Product Image-DIDAPOD060110

High quality prismatic optical bench

Leverandør: DIDALAB
Beskrivelse: Triangular, cast aluminium optical bench

Product Image-DIDAPOD608650

Lens, wide diameter, Magoptic

Leverandør: DIDALAB
Beskrivelse: These wide diameter lenses are used for easy classroom experiments and for aberrations underscoring.

Product Image-DIDAPOD013135

Diode laser, red

Varenummer: (DIDAPOD013135)
Leverandør: DIDALAB
Beskrivelse: The diameter of the beam is adjustable from 1 to 12 mm.
UOM: 1 * 1 Items
Product Image-DIDAPOD013133

Diode lasers, class II

Leverandør: DIDALAB
Beskrivelse: Educational Materials, Optics, Ansøgning: Physics, Diode laser, blue, Class II

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